{"id":468178,"date":"2024-04-24T10:43:01","date_gmt":"2024-04-24T09:43:01","guid":{"rendered":"https:\/\/blog.jetbrains.com\/idea\/2024\/03\/java-22-and-intellij-idea-2\/"},"modified":"2024-04-24T11:12:52","modified_gmt":"2024-04-24T10:12:52","slug":"java-22-and-intellij-idea-2","status":"publish","type":"idea","link":"https:\/\/blog.jetbrains.com\/zh-hans\/idea\/2024\/04\/java-22-and-intellij-idea-2\/","title":{"rendered":"Java 22 \u548c IntelliJ IDEA"},"content":{"rendered":"<p>Java 22 \u73b0\u5df2\u6b63\u5f0f\u53d1\u5e03\uff0c<a href=\"https:\/\/www.jetbrains.com\/idea\/nextversion\/\" target=\"_blank\" rel=\"noopener\">IntelliJ IDEA 2024.1<\/a>\u00a0\u5168\u9762\u652f\u6301\u8be5\u7248\u672c\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u5176\u4e2d\u7684\u65b0\u529f\u80fd\uff01<\/p>\n<p>\u4ece\u65b0\u624b\u5f00\u53d1\u8005\u5230 Java \u4e13\u5bb6\uff0c\u4ece\u5bfb\u6c42\u6027\u80fd\u548c\u5b89\u5168\u529f\u80fd\u7684\u5927\u578b\u7ec4\u7ec7\u5230\u5c16\u7aef\u6280\u672f\u7231\u597d\u8005\uff0c\u4ece Java \u8bed\u8a00\u7684\u65b0\u7279\u6027\u5230 JVM \u5e73\u53f0\u7684\u6539\u8fdb\uff0cJava 22 \u53ef\u4ee5\u6ee1\u8db3\u5404\u79cd\u7fa4\u4f53\u7684\u5404\u7c7b\u9700\u6c42\u3002<\/p>\n<p>\u8fd9\u4e9b Java \u529f\u80fd\u5728\u4e00\u4e2a\u53c8\u4e00\u4e2a\u7248\u672c\u53d1\u5e03\u540e\u826f\u597d\u914d\u5408\uff0c\u521b\u9020\u51fa\u66f4\u591a\u53ef\u80fd\uff0c\u6df1\u5ea6\u52a9\u529b\u5f00\u53d1\u8005\u521b\u5efa\u89e3\u51b3\u73b0\u6709\u75db\u70b9\u3001\u66f4\u5f3a\u52b2\u4e14\u66f4\u5b89\u5168\u7684\u5e94\u7528\u7a0b\u5e8f\u3002<\/p>\n<p>\u672c\u535a\u6587\u5e76\u672a\u8986\u76d6\u6240\u6709 Java 22 \u529f\u80fd\u3002 \u5982\u679c\u60a8\u6709\u5174\u8da3\uff0c\u6211\u5efa\u8bae\u67e5\u770b<a href=\"https:\/\/openjdk.org\/projects\/jdk\/22\/\" target=\"_blank\" rel=\"noopener\">\u6b64\u94fe\u63a5<\/a>\uff0c\u8be6\u7ec6\u4e86\u89e3 Java 22 \u4e2d\u7684\u65b0\u589e\u5185\u5bb9\u548c\u53d8\u5316\uff0c\u5305\u62ec bug\u3002<\/p>\n<p>\u5728\u8fd9\u7bc7\u535a\u6587\u4e2d\uff0c\u6211\u5c06\u4ecb\u7ecd IntelliJ IDEA \u5982\u4f55\u5e2e\u52a9\u60a8\u4e0a\u624b\u3001\u542f\u52a8\u548c\u8fd0\u884c Java 22 \u529f\u80fd\uff0c\u4f8b\u5982<a href=\"https:\/\/openjdk.org\/jeps\/459\" target=\"_blank\" rel=\"noopener\">\u5b57\u7b26\u4e32\u6a21\u677f<\/a>\u3001<a href=\"https:\/\/openjdk.org\/jeps\/463\" target=\"_blank\" rel=\"noopener\">\u9690\u5f0f\u58f0\u660e\u7684\u7c7b\u4e0e\u5b9e\u4f8b main \u65b9\u6cd5<\/a>\u3001<a href=\"https:\/\/openjdk.org\/jeps\/447\" target=\"_blank\" rel=\"noopener\">super() \u4e4b\u524d\u7684\u8bed\u53e5<\/a>\uff0c\u4ee5\u53ca<a href=\"https:\/\/openjdk.org\/jeps\/456\" target=\"_blank\" rel=\"noopener\">\u672a\u547d\u540d\u53d8\u91cf\u548c\u6a21\u5f0f<\/a>\u3002<\/p>\n<p>\u8fc7\u53bb\u4e00\u4e2a\u6708\uff0c\u6211\u53d1\u5e03\u4e86\u591a\u7bc7\u535a\u6587\u5206\u522b\u8be6\u7ec6\u4ecb\u7ecd\u4e86\u6bcf\u4e2a\u4e3b\u9898\u3002 \u5982\u679c\u60a8\u4e0d\u719f\u6089\u8fd9\u4e9b\u4e3b\u9898\uff0c\u6211\u5f3a\u70c8\u5efa\u8bae\u9605\u8bfb\u8fd9\u4e9b\u8be6\u7ec6\u7684\u535a\u6587\uff08\u6211\u5728\u8fd9\u7bc7\u535a\u6587\u7684\u76f8\u5e94\u5c0f\u8282\u4e2d\u9644\u4e0a\u4e86\u94fe\u63a5\uff09\u3002 \u5728\u8fd9\u7bc7\u535a\u6587\u4e2d\uff0c\u6211\u5c06\u63d0\u53ca\u5148\u524d\u535a\u6587\u4e2d\u7684\u4e00\u4e9b\u90e8\u5206\uff0c\u7279\u522b\u662f IntelliJ IDEA \u5982\u4f55\u652f\u6301\u8fd9\u4e9b\u529f\u80fd\u3002 \u9996\u5148\uff0c\u6211\u4eec\u5c06 IntelliJ IDEA \u914d\u7f6e\u4e3a\u4f7f\u7528 Java 22 \u529f\u80fd\u3002<\/p>\n<h2>IntelliJ IDEA \u914d\u7f6e<\/h2>\n<div id=\"crowdin_phrase_33849858\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\"><a href=\"https:\/\/www.jetbrains.com\/idea\/nextversion\/\" target=\"_blank\" rel=\"noopener\">IntelliJ IDEA 2024.1 Beta<\/a>\u00a0\u63d0\u4f9b Java 22 \u652f\u6301\u3002\u6700\u7ec8\u7248\u672c\u5df2\u4e8e 2024 \u5e74 3 \u6708\u53d1\u5e03\u3002<\/div>\n<div title=\"\">\u00a0<\/div>\n<div id=\"crowdin_phrase_33849862\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\">\u5728 Project Settings\uff08\u9879\u76ee\u8bbe\u7f6e\uff09\u4e2d\uff0c\u5c06 SDK \u8bbe\u4e3a Java 22\u3002\u5bf9\u4e8e\u8bed\u8a00\u7ea7\u522b\uff0c\u5728 Project\uff08\u9879\u76ee\uff09\u548c Modules\uff08\u6a21\u5757\uff09\u6807\u7b7e\u9875\u4e0a\u9009\u62e9 22 (Preview) \u2013 Statements before super(), string templates (2nd preview etc.)\uff0c\u5982\u4ee5\u4e0b\u8bbe\u7f6e\u5c4f\u5e55\u622a\u56fe\u6240\u793a\uff1a<\/div>\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" loading=\"lazy\" width=\"3576\" height=\"1508\" src=\"https:\/\/blog.jetbrains.com\/wp-content\/uploads\/2024\/03\/image-47.png\" alt=\"\" class=\"wp-image-458931\"\/><\/figure>\n\n\n<div id=\"crowdin_phrase_33849868\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\">\u5982\u679c\u60a8\u8fd8\u6ca1\u6709\u5c06 Java 22 \u4e0b\u8f7d\u5230\u7cfb\u7edf\u4e2d\uff0c\u6ca1\u5173\u7cfb\uff0cIntelliJ IDEA \u5e2e\u60a8\u89e3\u51b3\uff01<\/div>\n<div id=\"crowdin_phrase_33849870\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\">\u60a8\u53ef\u4ee5\u4f7f\u7528\u76f8\u540c\u7684 Project\uff08\u9879\u76ee\uff09\u8bbe\u7f6e\u7a97\u53e3\uff0c\u70b9\u51fb SDK \u65c1\u8fb9\u7684\u4e0b\u62c9\u83dc\u5355\uff0c\u7136\u540e\u9009\u62e9 Download JDK\uff08\u4e0b\u8f7d JDK\uff09\u3002<\/div>\n<div id=\"crowdin_phrase_33849872\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\">\u60a8\u5c06\u770b\u5230\u4ee5\u4e0b\u5f39\u51fa\u7a97\u53e3\uff0c\u5176\u4e2d\u5305\u542b\u4f9b\u5e94\u5546\u5217\u8868\uff08\u4f8b\u5982 Oracle OpenJDK\u3001GraalVM\u3001Azul Zulu \u7b49\uff09\uff1a<\/div>\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/blog.jetbrains.com\/wp-content\/uploads\/2024\/03\/config-downld.png\" alt=\"\" \/><\/figure>\n<p>\u914d\u7f6e\u5b8c\u6210\uff0c\u6211\u4eec\u4ece\u6211\u6700\u559c\u6b22\u7684\u65b0\u529f\u80fd\u4e4b\u4e00\u201c\u5b57\u7b26\u4e32\u6a21\u677f\u201d\u5f00\u59cb\u3002<\/p>\n<h2>\u5b57\u7b26\u4e32\u6a21\u677f\uff08\u9884\u89c8\u8bed\u8a00\u529f\u80fd\uff09<\/h2>\n<div id=\"crowdin_phrase_33849880\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\">\u73b0\u6709\u7684\u5b57\u7b26\u4e32\u4e32\u8054\u9009\u9879\u96be\u4ee5\u4f7f\u7528\u5e76\u4e14\u5bb9\u6613\u51fa\u9519\uff1b\u5b57\u7b26\u4e32\u6a21\u677f\u63d0\u4f9b\u4e86\u66f4\u597d\u7684\u66ff\u4ee3\u65b9\u6848\uff0c\u5373\u5b57\u7b26\u4e32\u5185\u63d2\uff0c\u989d\u5916\u4f18\u52bf\u5305\u62ec\u9a8c\u8bc1\u3001\u5b89\u5168\u548c\u901a\u8fc7\u6a21\u677f\u5904\u7406\u5668\u8f6c\u6362\u3002<\/div>\n<div title=\"\">\u00a0<\/div>\n<div id=\"crowdin_phrase_33849882\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\">\u5982\u679c\u60a8\u4e0d\u719f\u6089\u8fd9\u4e2a\u4e3b\u9898\uff0c\u8bf7\u9605\u8bfb\u6211\u7684\u8be6\u7ec6\u535a\u6587\uff1a<a href=\"https:\/\/blog.jetbrains.com\/idea\/2023\/11\/string-templates-in-java-why-should-you-care\/\">String Templates in Java \u2013 why should you care?<\/a>\u8fd9\u7bc7\u6587\u7ae0\u6db5\u76d6\u4e86\u6240\u6709\u57fa\u7840\u77e5\u8bc6\uff0c\u5305\u62ec\u9700\u8981\u5b57\u7b26\u4e32\u6a21\u677f\u7684\u7406\u7531\uff0c\u4ee5\u53ca\u5185\u7f6e\u548c\u7528\u6237\u5b9a\u4e49\u5b57\u7b26\u4e32\u5904\u7406\u5668\u7684\u591a\u4e2a\u5b9e\u64cd\u793a\u4f8b\u3002<\/div>\n<h3>IntelliJ IDEA \u80fd\u591f\u9ad8\u4eae\u663e\u793a\u53ef\u88ab\u66ff\u6362\u4e3a\u5b57\u7b26\u4e32\u6a21\u677f\u7684\u4ee3\u7801<\/h3>\n<p>\u5047\u8bbe\u60a8\u5b9a\u4e49\u4e86\u4ee5\u4e0b\u4ee3\u7801\uff0c\u8bb0\u5f55\u4e00\u6761\u4f7f\u7528\u4e32\u8054\u8fd0\u7b97\u7b26\u7ec4\u5408\u5b57\u7b26\u4e32\u6587\u5b57\u548c\u53d8\u91cf\u503c\u7684\u6d88\u606f\uff1a<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"\">\npublic void processOrder(int orderId, String product, int qty, LocalDate orderDate) {\n   if (quantity &lt;= 0) {\n       String errorMessage = &quot;Invalid order quantity: &quot; + qty + &quot; for product &quot; + product + &quot;, order ID &quot; + orderId;\n       logger.error(errorMessage);\n       return;\n   }\n   \/\/.. Remaining code\n}<\/pre>\n<div id=\"crowdin_phrase_33849892\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\">\u5982\u679c\u60a8\u5fd8\u8bb0\u5728\u5b57\u7b26\u4e32\u6587\u5b57\u4e2d\u6dfb\u52a0\u7a7a\u683c\uff0c\u4e0a\u9762\u4ee3\u7801\u7684\u8f93\u51fa\u53ef\u80fd\u4f1a\u5bfc\u81f4\u95ee\u9898\u3002\u7531\u4e8e\u5b58\u5728\u591a\u4e2a\u5de6\u53f3\u53cc\u5f15\u53f7 (<code>\"<\/code>) \u548c\u00a0<code>+<\/code>\u00a0\u8fd0\u7b97\u7b26\uff0c\u4ee3\u7801\u4e0d\u592a\u5bb9\u6613\u9605\u8bfb\u6216\u7406\u89e3\uff0c\u5982\u679c\u5411\u5176\u4e2d\u6dfb\u52a0\u66f4\u591a\u6587\u5b57\u6216\u53d8\u91cf\u503c\uff0c\u60c5\u51b5\u4f1a\u53d8\u5f97\u66f4\u7cdf\u3002<\/div>\n<div title=\"\">\u00a0<\/div>\n<div class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\">\u60a8\u53ef\u4ee5\u4f7f\u7528\u00a0<code>StringBuilder.append()<\/code>\u3001<code>String.format()<\/code>\u00a0\u6216\u00a0<code>String.formatted()<\/code>\u00a0\u65b9\u6cd5\uff0c\u6216\u4f7f\u7528\u00a0<code>MessageFormat<\/code>\u00a0\u7c7b\u66ff\u6362\u4e0a\u9762\u7684\u4ee3\u7801\uff08\u5982\u6211\u5173\u4e8e\u6b64\u4e3b\u9898\u7684<a href=\"https:\/\/blog.jetbrains.com\/idea\/2023\/11\/string-templates-in-java-why-should-you-care\/\">\u8be6\u7ec6\u535a\u6587<\/a>\u6240\u793a\uff09\uff0c\u4f46\u8fd9\u4e9b\u65b9\u6cd5\u90fd\u6709\u5404\u81ea\u7684\u95ee\u9898\u3002<\/div>\n<div title=\"\">\u00a0<\/div>\n<div id=\"crowdin_phrase_33849898\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\">\u522b\u62c5\u5fc3\uff0cIntelliJ IDEA \u53ef\u4ee5\u68c0\u6d4b\u5230\u6b64\u7c7b\u4ee3\u7801\uff0c\u5efa\u8bae\u5c06\u5176\u66ff\u6362\u4e3a\u5b57\u7b26\u4e32\u6a21\u677f\uff0c\u5e76\u4e3a\u60a8\u6267\u884c\u64cd\u4f5c\uff0c\u5982\u4e0b\u6240\u793a\u3002\u5982\u679c\u60a8\u4e0d\u77e5\u9053\u5b57\u7b26\u4e32\u6a21\u677f\u7684\u8bed\u6cd5\u4e5f\u6ca1\u5173\u7cfb\uff0c IntelliJ IDEA \u53ef\u4ee5\u5e2e\u60a8\u641e\u5b9a ?<\/div>\n<figure class=\"wp-block-image\"><img decoding=\"async\" class=\"wp-image-16062\" src=\"https:\/\/blog.jetbrains.com\/wp-content\/uploads\/2024\/03\/hello-world-string-templates.gif\" alt=\"\" \/><\/figure>\n<h3>\u5b57\u7b26\u4e32\u6a21\u677f\u548c IntelliJ IDEA \u4e2d\u7684\u5d4c\u5165\u5f0f\u8868\u8fbe\u5f0f<\/h3>\n<div id=\"crowdin_phrase_33849906\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\">\u5d4c\u5165\u6a21\u677f\u8868\u8fbe\u5f0f\uff08\u53d8\u91cf\u3001\u8868\u8fbe\u5f0f\u6216\u65b9\u6cd5\u8c03\u7528\uff09\u7684\u8bed\u6cd5\u53ef\u80fd\u4e0d\u592a\u7b26\u5408 Java \u5f00\u53d1\u8005\u7684\u4e60\u60ef\uff0c\u5728\u6ca1\u6709\u5e2e\u52a9\u7684\u60c5\u51b5\u4e0b\u53ef\u80fd\u4e5f\u4e0d\u6613\u4e0a\u624b\u3002\u522b\u62c5\u5fc3\uff0cIntelliJ IDEA \u5e2e\u60a8\u89e3\u51b3\uff01<\/div>\n<div title=\"\">\u00a0<\/div>\n<div id=\"crowdin_phrase_33849910\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\">\u6bcf\u4e2a\u5d4c\u5165\u5f0f\u8868\u8fbe\u5f0f\u90fd\u5fc5\u987b\u5305\u542b\u5728 \\{} \u5185\u3002\u5f53\u60a8\u8f93\u5165 \\{ \u65f6\uff0cIntelliJ IDEA \u4f1a\u4e3a\u60a8\u6dfb\u52a0\u53f3 }\u3002\u5b83\u8fd8\u63d0\u4f9b\u4ee3\u7801\u8865\u5168\uff0c\u5e2e\u52a9\u60a8\u9009\u62e9\u4f5c\u7528\u57df\u5185\u7684\u53d8\u91cf\u6216\u5b83\u4e0a\u9762\u7684\u4efb\u4f55\u65b9\u6cd5\u3002\u5982\u679c\u63d2\u5165\u7684\u4ee3\u7801\u65e0\u6cd5\u7f16\u8bd1\uff0cIntelliJ IDEA \u4e5f\u4f1a\u9ad8\u4eae\u663e\u793a\uff08\u4f5c\u4e3a\u7f16\u8bd1\u9519\u8bef\uff09\uff0c\u5982\u4ee5\u4e0b gif \u6240\u793a\uff1a<\/div>\n<figure class=\"wp-block-image\"><img decoding=\"async\" class=\"wp-image-16062\" src=\"https:\/\/blog.jetbrains.com\/wp-content\/uploads\/2024\/03\/insert-variables3.gif\" alt=\"\" \/><\/figure>\n<h3>\u5c06\u5b57\u7b26\u4e32\u6a21\u677f\u4e0e\u6587\u672c\u5757\u7ed3\u5408\u4f7f\u7528<\/h3>\n<div id=\"crowdin_phrase_33849922\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\">\u5904\u7406\u8de8\u591a\u884c\u7684\u5b57\u7b26\u4e32\u503c\uff08\u4f8b\u5982 JSON\u3001XML\u3001HTML\u3001SQL\uff09\u6216\u901a\u5e38\u7531\u5916\u90e8\u73af\u5883\u5904\u7406\u7684\u5176\u4ed6\u503c\u65f6\uff0c\u6587\u672c\u5757\u975e\u5e38\u6709\u7528\u3002Java \u5f00\u53d1\u8005\u7ecf\u5e38\u7ed3\u5408\u4f7f\u7528\u5b57\u7b26\u4e32\u6587\u5b57\u548c\u53d8\u91cf\u503c\uff08\u53d8\u91cf\u3001\u8868\u8fbe\u5f0f\u6216\u65b9\u6cd5\u8c03\u7528\uff09\u521b\u5efa\u6b64\u7c7b\u5b57\u7b26\u4e32\u503c\u3002<\/div>\n<div title=\"\">\u00a0<\/div>\n<div id=\"crowdin_phrase_33849926\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\">\u4ee5\u4e0b\u793a\u4f8b\u5c55\u793a\u4e86 IntelliJ IDEA \u5982\u4f55\u4f7f\u7528\u5b57\u7b26\u4e32\u6a21\u677f\u4e3a\u4e32\u8054\u5b57\u7b26\u4e32\u6587\u5b57\u4e0e\u53d8\u91cf\u503c\u7684\u591a\u884c\u5b57\u7b26\u4e32\u503c\u68c0\u6d4b\u548c\u521b\u5efa\u6587\u672c\u5757\u3002\u5b83\u8fd8\u5c55\u793a\u4e86 IntelliJ IDEA \u5982\u4f55\u4e3a\u6b64\u7c7b\u5757\u4e2d\u7684\u53d8\u91cf\u540d\u79f0\u63d0\u4f9b\u4ee3\u7801\u8865\u5168\u3002\u5f53\u60a8\u8f93\u5165\u00a0<code>\\{<\/code>\u00a0\u65f6\uff0cIntelliJ IDEA \u5c06\u6dfb\u52a0\u00a0<code>}<\/code>\u3002\u5f53\u60a8\u5f00\u59cb\u8f93\u5165\u53d8\u91cf\u540d\u79f0\u00a0<code>countryName<\/code>\u00a0\u65f6\uff0c\u5b83\u4f1a\u663e\u793a\u8be5\u4e0a\u4e0b\u6587\u4e2d\u7684\u53ef\u7528\u53d8\u91cf\uff1a<\/div>\n<figure class=\"wp-block-image\"><img decoding=\"async\" class=\"wp-image-16062\" src=\"https:\/\/blog.jetbrains.com\/wp-content\/uploads\/2024\/03\/textblocks1.gif\" alt=\"\" \/><\/figure>\n<h3>\u8bed\u8a00\u6ce8\u5165\u548c\u5b57\u7b26\u4e32\u6a21\u677f<\/h3>\n<div id=\"crowdin_phrase_33849938\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\">\u60a8\u8fd8\u53ef\u4ee5\u5728\u8de8\u8d8a\u5355\u884c\u6216\u591a\u884c\u7684\u5b57\u7b26\u4e32\u503c\uff08\u4f8b\u5982\u6587\u672c\u5757\uff09\u4e2d<a href=\"https:\/\/www.jetbrains.com.cn\/help\/idea\/using-language-injections.html\" target=\"_blank\" rel=\"noopener\">\u6ce8\u5165\u8bed\u8a00\u6216\u5f15\u7528<\/a>\u3002\u7531\u6b64\uff0c\u60a8\u5c06\u83b7\u5f97\u5168\u9762\u7684\u7f16\u7801\u8f85\u52a9\u6765\u7f16\u8f91\u6587\u5b57\u503c\u3002\u60a8\u53ef\u4ee5\u4f7f\u7528\u00a0<code>@Language<\/code>\u00a0\u6ce8\u89e3\u6765\u4e34\u65f6\u6216\u6c38\u4e45\u5229\u7528\u6b64\u529f\u80fd\uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/div>\n<figure class=\"wp-block-image\"><img decoding=\"async\" class=\"wp-image-16062\" src=\"https:\/\/blog.jetbrains.com\/wp-content\/uploads\/2024\/03\/textblocks-language-injection.gif\" alt=\"\" \/><\/figure>\n<p>\u60a8\u53ef\u4ee5\u67e5\u770b<a href=\"https:\/\/www.jetbrains.com.cn\/help\/idea\/using-language-injections.html#inject_language\" target=\"_blank\" rel=\"noopener\">\u6b64\u94fe\u63a5<\/a>\uff0c\u8be6\u7ec6\u4e86\u89e3 IntelliJ IDEA \u4e2d\u6ce8\u5165\u8bed\u8a00\u6216\u5f15\u7528\u7684\u597d\u5904\u548c\u7528\u6cd5\u3002<\/p>\n<h3>\u9884\u5b9a\u4e49\u6a21\u677f\u5904\u7406\u5668<\/h3>\n<div id=\"crowdin_phrase_33849950\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\">\u501f\u52a9\u5b57\u7b26\u4e32\u6a21\u677f\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u9884\u5b9a\u4e49\u5904\u7406\u5668\uff0c\u4f8b\u5982\u00a0<code>STR<\/code>\u3001<code>FMT<\/code>\u00a0\u548c\u00a0<code>RAW<\/code>\u3002\u6211\u5f3a\u70c8\u5efa\u8bae\u9605\u8bfb<a href=\"https:\/\/blog.jetbrains.com\/idea\/2023\/11\/string-templates-in-java-why-should-you-care\/\">\u5173\u4e8e\u5b57\u7b26\u4e32\u6a21\u677f\u7684\u8be6\u7ec6\u535a\u6587<\/a>\uff0c\u5176\u4e2d\u5305\u542b\u591a\u4e2a\u5b9e\u64cd\u793a\u4f8b\u3002<\/div>\n<h3>\u81ea\u5b9a\u4e49\u6a21\u677f\u5904\u7406\u5668<\/h3>\n<p>\u8ba9\u6211\u4eec\u4f7f\u7528\u5148\u524d\u535a\u6587\u4e2d\u672a\u6d89\u53ca\u7684\u81ea\u5b9a\u4e49\u5b57\u7b26\u4e32\u6a21\u677f\u3002\u5047\u8bbe\u60a8\u60f3\u8981\u521b\u5efa\u4e00\u4e2a\u8bb0\u5f55\u5b9e\u4f8b\uff0c\u4f8b\u5982 WeatherData\uff0c\u5b58\u50a8\u4e0a\u4e00\u8282\u4e2d\u4f7f\u7528\u7684 JSON \u7684\u8be6\u7ec6\u4fe1\u606f\u3002<\/p>\n<p>\u5047\u8bbe\u60a8\u5b9a\u4e49\u4ee5\u4e0b\u8bb0\u5f55\u6765\u5b58\u50a8\u7531\u4e0a\u4e00\u8282\u4e2d\u7684 JSON \u8868\u793a\u7684\u5929\u6c14\u6570\u636e\uff1a<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"\">\npublic record WeatherData (String cod, City city) { }\npublic record City (int id, String name, String country, Coord coord) {}\npublic record Coord (double lat, double lon) { }<\/pre>\n<p>\u60a8\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u65b9\u6cd5\u8fd4\u56de\u81ea\u5b9a\u4e49\u5b57\u7b26\u4e32\u6a21\u677f\u6765\u5904\u7406\u5185\u63d2\u5b57\u7b26\u4e32\u3001\u63a5\u53d7\u7c7b\u540d\uff08\u672c\u4f8b\u4e2d\u4e3a WeatherData\uff09\u5e76\u8fd4\u56de\u5176\u5b9e\u4f8b\uff1a<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"\">\npublic &lt;T&gt; StringTemplate.Processor&lt;T, RuntimeException&gt; getJSONProcessorFor(Class&lt;T&gt; classType) {\n        return StringTemplate.Processor.of(\n                (StringTemplate st) -&gt; {\n\n                    List&lt;Object&gt; sanitizedLst = new ArrayList&lt;&gt;();\n                    for (Object templateExpression : st.values()) {\n                        switch (templateExpression) {\n                            case String str -&gt; sanitizeStr(str, sanitizedLst);\n                            case Number _, Boolean _ -&gt; sanitizedLst.add(templateExpression);\n                            case null -&gt; sanitizedLst.add(&quot;&quot;);\n                            default -&gt; throw new IllegalArgumentException(&quot;Invalid value&quot;);\n                        }\n                    }\n                    String jsonSource = StringTemplate.interpolate(st.fragments(), sanitizedLst);\n                    System.out.println(jsonSource);\n\n                    try {\n                        ObjectMapper objectMapper = new ObjectMapper();\n                        return objectMapper.readValue(jsonSource, classType);\n                    } catch (JsonProcessingException e) {\n                        throw new RuntimeException(e);\n                    }\n                });\n    }<\/pre>\n<p>\u6839\u636e\u5e94\u7528\u7a0b\u5e8f\u7684\u903b\u8f91\uff0c\u60a8\u53ef\u80fd\u5e0c\u671b\u5bf9\u5728\u901a\u8fc7\u6a21\u677f\u8868\u8fbe\u5f0f\u5185\u63d2\u7684 JSON \u503c\u4e2d\u9047\u5230\u7684\u7279\u6b8a\u5b57\u7b26\u8fdb\u884c\u8f6c\u4e49\u3001\u5c06\u5176\u5220\u9664\u6216\u629b\u51fa\u9519\u8bef\uff0c\u5982\u4e0b\u6240\u793a\uff08\u4ee5\u4e0b\u65b9\u6cd5\u9009\u62e9\u8f6c\u4e49\u7279\u6b8a\u5b57\u7b26\u5e76\u5c06\u5176\u4f5c\u4e3a JSON \u503c\u7684\u4e00\u90e8\u5206\u5305\u542b\u5728\u5185\uff09\uff1a<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"\">\n    private void sanitizeStr(String str, List&lt;Object&gt; sanitizedLst) {\n        String sanitizedStr = str.replace(&quot;\\\\&quot;, &quot;\\\\\\\\&quot;)\n                                 .replace(&quot;\\&quot;&quot;, &quot;\\\\\\&quot;&quot;)\n                                 .replace(&quot;\/&quot;, &quot;\\\\\/&quot;)\n                                 .replace(&quot;\\b&quot;, &quot;\\\\b&quot;)\n                                 .replace(&quot;\\f&quot;, &quot;\\\\f&quot;)\n                                 .replace(&quot;\\n&quot;, &quot;\\\\n&quot;)\n                                 .replace(&quot;\\r&quot;, &quot;\\\\r&quot;)\n                                 .replace(&quot;\\t&quot;, &quot;\\\\t&quot;);\n        sanitizedLst.add(&quot;\\&quot;&quot; + sanitizedStr + &quot;\\&quot;&quot;);\n    }<\/pre>\n<p>\u60a8\u53ef\u4ee5\u521d\u59cb\u5316\u5e76\u4f7f\u7528\u6b64\u81ea\u5b9a\u4e49 JSON \u6a21\u677f\u5904\u7406\u5668\uff0c\u5982\u4e0b\u6240\u793a\u3002 \u53ef\u4ee5\u770b\u5230\uff0c\u6587\u672c\u5757\u548c\u5b57\u7b26\u4e32\u6a21\u677f\u7684\u7ec4\u5408\u4f7f\u89e3\u51b3\u65b9\u6848\u76f8\u5f53\u4f18\u96c5\u7b80\u6d01\u3002 JSON \u6613\u4e8e\u9605\u8bfb\u3001\u7f16\u5199\u548c\u7406\u89e3\uff08\u5f97\u76ca\u4e8e\u6587\u672c\u5757\uff09\u3002 \u6a21\u677f\u8868\u8fbe\u5f0f\u4f7f\u975e\u5e38\u91cf\u4e14\u5c06\u7531\u53d8\u91cf\u6ce8\u5165\u7684\u90e8\u5206\u6e05\u6670\u660e\u4e86\u3002 \u6700\u540e\uff0c\u81ea\u5b9a\u4e49\u6a21\u677f\u5904\u7406\u5668 WEATHER_JSON \u5c06\u786e\u4fdd\u751f\u6210\u7684 JSON \u6839\u636e\u60a8\u5b9a\u4e49\u7684\u903b\u8f91\u5f97\u5230\u9a8c\u8bc1\uff0c\u5e76\u8fd4\u56de WeatherData \u7684\u5b9e\u4f8b\uff08\u542c\u8d77\u6765\u662f\u4e0d\u662f\u5f88\u795e\u5947\uff1f\uff09 \uff1a<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"\">\nStringTemplate.Processor&lt;WeatherData, RuntimeException&gt; WEATHER_JSON = getJSONProcessorFor(WeatherData.class);\n\nString cod = null;\nString name = &quot;Amazing City&quot;;\nDouble lat = 55.7522;\n    \nWeatherData weatherData = WEATHER_JSON.&quot;&quot;&quot;\n                  {\n                    &quot;cod&quot;: \\{cod},\n                    &quot;city&quot;: {\n                      &quot;id&quot;: 524901,,,\n                      &quot;name&quot;: \\{name},\n                      &quot;country&quot;: &quot;XYZ&quot;,\n                      &quot;coord&quot;: {\n                        &quot;lat&quot;: \\{lat},\n                        &quot;lon&quot;: 37.6156\n                      }\n                    }\n                  }&quot;&quot;&quot;;<\/pre>\n<div id=\"crowdin_phrase_33849996\" class=\"crowdin_phrase status_select crowdin_phrase_approved\" title=\"\">\u4e0d\u8981\u9519\u8fc7\u6211\u5173\u4e8e\u6b64\u4e3b\u9898\u7684\u8be6\u7ec6\u535a\u6587\uff1a<a href=\"https:\/\/blog.jetbrains.com\/idea\/2023\/11\/string-templates-in-java-why-should-you-care\/\">String Templates in Java \u2013 why should you care?<\/a> \u4e86\u89e3\u5982\u4f55\u4f7f\u7528 <code>FMT<\/code> \u7b49\u9884\u5b9a\u4e49\u5b57\u7b26\u4e32\u6a21\u677f\u4e3a\u9644\u8fd1\u7684\u6587\u5177\u5e97\u751f\u6210\u683c\u5f0f\u6b63\u786e\u7684\u6536\u636e\uff0c\u6216\u8005\u5c06 :) \u6216 :( \u7b49\u7ec4\u5408\u7f16\u7801\u548c\u89e3\u7801\u4e3a ? \u6216 \u2639\ufe0f \u8868\u60c5\u7b26\u53f7\u3002<\/div>\n<div id=\"crowdin_phrase_33849998\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\">\u60a8\u89c9\u5f97\u8fd9\u6709\u8da3\u5417\uff1f<\/div>\n<h2>\u9690\u5f0f\u58f0\u660e\u7684\u7c7b\u4e0e\u5b9e\u4f8b main \u65b9\u6cd5\uff08\u9884\u89c8\u8bed\u8a00\u529f\u80fd\uff09<\/h2>\n<div id=\"crowdin_phrase_33850002\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\"><a href=\"https:\/\/openjdk.org\/jeps\/463\" target=\"_blank\" rel=\"noopener\">\u6b64\u529f\u80fd<\/a>\u5728 Java 21 \u4e2d\u4f5c\u4e3a\u9884\u89c8\u8bed\u8a00\u529f\u80fd\u5f15\u5165\uff0c\u5728 Java 22 \u4e2d\u4e3a\u7b2c\u4e8c\u4e2a\u9884\u89c8\u7248\u3002<\/div>\n<div title=\"\">\u00a0<\/div>\n<div id=\"crowdin_phrase_33850004\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\">\u5b83\u5c06\u5f7b\u5e95\u6539\u53d8\u65b0 Java \u5f00\u53d1\u8005\u5b66\u4e60 Java \u7684\u65b9\u5f0f\u3002\u5b83\u7b80\u5316\u4e86\u5b66\u751f\u5b66\u4e60\u57fa\u7840\u77e5\u8bc6\uff08\u4f8b\u5982\u53d8\u91cf\u8d4b\u503c\u3001\u5e8f\u5217\u3001\u6761\u4ef6\u548c\u8fed\u4ee3\uff09\u65f6\u7684\u521d\u59cb\u6b65\u9aa4\u3002\u5b66\u751f\u4e0d\u518d\u9700\u8981\u58f0\u660e\u663e\u5f0f\u7c7b\u6765\u5f00\u53d1\u4ee3\u7801\uff0c\u6216\u4f7f\u7528\u7b7e\u540d <code>public static void main(String [])<\/code> \u7f16\u5199\u5176 <code>main()<\/code> \u65b9\u6cd5\u3002\u501f\u52a9\u6b64\u529f\u80fd\uff0c\u53ef\u4ee5\u9690\u5f0f\u58f0\u660e\u7c7b\uff0c\u4ee5\u53ca\u4f7f\u7528\u66f4\u77ed\u7684\u5173\u952e\u5b57\u5217\u8868\u521b\u5efa <code>main()<\/code> \u65b9\u6cd5\u3002<i><\/i><\/div>\n<div title=\"\">\u00a0<\/div>\n<div id=\"crowdin_phrase_33850012\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\">\u5982\u679c\u60a8\u4e0d\u719f\u6089\u6b64\u529f\u80fd\uff0c\u6211\u5f3a\u70c8\u5efa\u8bae\u9605\u8bfb\u8be6\u7ec6\u4ecb\u7ecd\u6b64\u529f\u80fd\u7684\u6587\u7ae0 <a href=\"https:\/\/blog.jetbrains.com\/idea\/2024\/02\/helloworld-and-main-meet-minimalistic\/\">\u2018HelloWorld\u2019 and \u2018main()\u2019 meet minimalistic<\/a>\u5728\u8fd9\u7bc7\u535a\u6587\u4e2d\uff0c\u6211\u5c06\u5305\u542b\u5176\u4e2d\u7684\u4e00\u4e9b\u90e8\u5206\u3002<\/div>\n<h3 class=\"wp-block-heading\">Java 21 \u4e4b\u524d\u548c\u4e4b\u540e\u7684 \u2018HelloWorld\u2019 \u7c7b<\/h3>\n<p><!-- \/wp:heading --><\/p>\n<p><!-- wp:paragraph --><\/p>\n<div id=\"crowdin_phrase_33850018\" class=\"crowdin_phrase crowdin_phrase_approved status_select\" title=\"\">\u5728 Java 21 \u4e4b\u524d\uff0c\u60a8\u9700\u8981\u5b9a\u4e49\u4e00\u4e2a\u7c7b\uff0c\u4f8b\u5982 <code>HelloWorld<\/code>\uff0c\u4f7f\u7528\u7279\u5b9a\u5173\u952e\u5b57\u5217\u8868\u5b9a\u4e49 <code>main()<\/code> \u65b9\u6cd5\uff0c\u4ee5\u5c06\u4efb\u4f55\u6587\u672c\uff08\u4f8b\u5982 \u2018Hello World\u2019\uff09\u6253\u5370\u5230\u63a7\u5236\u53f0\uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/div>\n<p><!-- \/wp:paragraph --><\/p>\n<p><!-- wp:enlighter\/codeblock --><\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">public class HelloWorld {\n    public static void main(String[] args) {\n        System.out.println(\"Hello World\");\n    }\n}\n<\/pre>\n<p><!-- \/wp:enlighter\/codeblock --><\/p>\n<p><!-- wp:paragraph --><\/p>\n<div id=\"crowdin_phrase_33850022\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\">\u5728 Java 21 \u4e2d\uff0c\u8fd9\u4e2a\u521d\u59cb\u6b65\u9aa4\u5df2\u88ab\u7f29\u77ed\u3002\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\u5b9a\u4e49\u6e90\u4ee3\u7801\u6587\u4ef6\uff08\u4f8b\u5982 HelloWorld.java\uff09\uff0c\u5c06\u6d88\u606f\u6253\u5370\u5230\u63a7\u5236\u53f0\uff08\u4e0d\u9700\u8981\u5b9a\u4e49\u7c7b\uff0c\u5b83\u5177\u6709\u65b9\u6cd5 <code>main()<\/code> \u7684\u8f83\u77ed\u7b7e\u540d\uff09\uff1a<\/div>\n<p><!-- \/wp:paragraph --><\/p>\n<p><!-- wp:enlighter\/codeblock --><\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">void main() {\n    System.out.println(\"Hello World\");\n}\n<\/pre>\n<p><!-- \/wp:enlighter\/codeblock --><\/p>\n<p><!-- wp:paragraph --><\/p>\n<div id=\"crowdin_phrase_33850028\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\">\u524d\u9762\u7684\u4ee3\u7801\u6bd4\u4e4b\u524d\u6240\u9700\u7684\u66f4\u7b80\u5355\u3002\u8ba9\u6211\u4eec\u770b\u770b\u8fd9\u4e00\u53d8\u5316\u5982\u4f55\u5e2e\u52a9\u60a8\u4e13\u6ce8\u4e8e\u771f\u6b63\u9700\u8981\u7684\u4e1c\u897f\u3002<\/div>\n<p><!-- \/wp:paragraph --><\/p>\n<h3 class=\"wp-block-heading\">\u7f16\u8bd1\u548c\u6267\u884c\u4ee3\u7801<\/h3>\n<p><!-- \/wp:heading --><\/p>\n<p><!-- wp:paragraph --><\/p>\n<p>\u7f16\u5199\u5b8c\u4ee3\u7801\u540e\uff0c\u4e0b\u4e00\u6b65\u5c31\u662f\u6267\u884c\u3002<\/p>\n<p><!-- \/wp:paragraph --><\/p>\n<p><!-- wp:paragraph --><\/p>\n<div id=\"crowdin_phrase_33850036\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\">\u5728\u547d\u4ee4\u63d0\u793a\u7b26\u4e0a\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528 <code>javac<\/code> \u548c <code>java<\/code> \u547d\u4ee4\u7f16\u8bd1\u548c\u6267\u884c\u4ee3\u7801\u3002<\/div>\n<div id=\"crowdin_phrase_33850038\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\">\u5047\u8bbe\u60a8\u5df2\u5728\u6e90\u4ee3\u7801\u6587\u4ef6 HelloWorld.java \u4e2d\u5b9a\u4e49\u4e86\u4ee3\u7801\uff0c\u5219\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u6765\u8fd0\u884c\u548c\u6267\u884c\uff1a<\/div>\n<p><!-- \/wp:paragraph --><\/p>\n<p><!-- wp:enlighter\/codeblock --><\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">C:\\code\\MyHelloWorldProject\\javac HelloWorld.java\nC:\\code\\MyHelloWorldProject\\java HelloWorld\n<\/pre>\n<p><!-- \/wp:enlighter\/codeblock --><\/p>\n<p><!-- wp:paragraph --><\/p>\n<div id=\"crowdin_phrase_33850042\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\">\u4ece Java 11 \u5f00\u59cb\uff0c\u53ef\u4ee5\u8df3\u8fc7\u5355\u4e2a\u6e90\u4ee3\u7801\u6587\u4ef6\u4e2d\u5b9a\u4e49\u7684\u4ee3\u7801\u7684\u7f16\u8bd1\u8fc7\u7a0b\uff0c\u56e0\u6b64\uff0c\u60a8\u53ef\u4ee5\u4ec5\u4f7f\u7528\u7b2c\u4e8c\u4e2a\u547d\u4ee4\uff08\u6307\u5b9a\u6e90\u4ee3\u7801\u6587\u4ef6\u7684\u540d\u79f0\uff0c\u5982\u4e0b\u6240\u793a\uff09\uff1a<\/div>\n<p><!-- \/wp:paragraph --><\/p>\n<p><!-- wp:enlighter\/codeblock --><\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">C:\\code\\MyHelloWorldProject\\java HelloWorld.java\n<\/pre>\n<p><!-- \/wp:enlighter\/codeblock --><\/p>\n<p><!-- wp:paragraph --><\/p>\n<p>\u4f46\u662f\uff0c\u7531\u4e8e\u5b9e\u4f8b main \u65b9\u6cd5\u548c\u9690\u5f0f\u7c7b\u4e3a\u9884\u89c8\u8bed\u8a00\u529f\u80fd\uff0c\u60a8\u5e94\u8be5\u4f7f\u7528\u8fd9\u4e9b\u547d\u4ee4\u6dfb\u52a0\u6807\u8bb0 <code>--enable-preview<\/code> \u548c <code>--source 22<\/code>\uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n<p><!-- \/wp:paragraph --><\/p>\n<p><!-- wp:enlighter\/codeblock --><\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">C:\\code\\MyHelloWorldProject\\java --enable-preview --source 22 HelloWorld.java\n<\/pre>\n<p><!-- \/wp:enlighter\/codeblock --><\/p>\n<p><!-- wp:paragraph --><\/p>\n<div id=\"crowdin_phrase_33850050\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\">\u6700\u7ec8\uff0c\u60a8\u90fd\u53ef\u80fd\u4f1a\u8f6c\u800c\u4f7f\u7528 IDE \u7f16\u5199\u4ee3\u7801\u3002\u5982\u679c\u60a8\u60f3\u4f7f\u7528 IntelliJ IDEA \u521b\u5efa\u5b9e\u4f8b main \u65b9\u6cd5\uff0c\u8bf7\u89c1\u4ee5\u4e0b\u5feb\u901f\u6b65\u9aa4\u3002\u521b\u5efa\u4e00\u4e2a\u65b0\u7684 Java \u9879\u76ee\uff0c\u9009\u62e9\u6784\u5efa\u7cfb\u7edf IntelliJ\uff08\u8fd9\u6837\u60a8\u5c31\u53ef\u4ee5\u4f7f\u7528 Java \u7f16\u8bd1\u5668\u548c\u8fd0\u884c\u65f6\u5de5\u5177\uff09\uff0c\u5728\u8fd0\u884c\u4ee3\u7801\u4e4b\u524d\uff0c\u4f7f\u7528\u5b9e\u4f8b main \u65b9\u6cd5\u521b\u5efa\u4e00\u4e2a\u65b0\u6587\u4ef6\uff08\u4f8b\u5982 HelloWorld.java\uff09\uff0c\u5e76\u5c06\u5c5e\u6027\u8bbe\u7f6e\u4e3a\u4f7f\u7528 Java 22\uff0c\u5982\u4ee5\u4e0b gif \u6240\u793a\uff08\u8fd9\u53ef\u4ee5\u8ba9\u60a8\u514d\u4e8e\u6bcf\u6b21\u6267\u884c\u4ee3\u7801\u65f6\u90fd\u5728\u547d\u4ee4\u63d0\u793a\u7b26\u4e0a\u8f93\u5165\u7f16\u8bd1\/\u6267\u884c\u547d\u4ee4\uff09\uff1a<\/div>\n<p><!-- \/wp:paragraph --><\/p>\n<p><!-- wp:image {\"id\":16062} --><\/p>\n<figure class=\"wp-block-image\"><img decoding=\"async\" class=\"wp-image-16062\" src=\"https:\/\/blog.jetbrains.com\/wp-content\/uploads\/2024\/02\/create-new-project2.gif\" alt=\"\" \/><\/figure>\n<p><!-- \/wp:image --><\/p>\n<p><!-- wp:paragraph --><\/p>\n<div id=\"crowdin_phrase_33850058\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\">\u60a8\u662f\u5426\u60f3\u77e5\u9053\u5728 src \u6587\u4ef6\u5939\u4e2d\u521b\u5efa Java \u7c7b\u800c\u4e0d\u662f\u6587\u4ef6\u4f1a\u4e0d\u4f1a\u66f4\u597d\uff1f\u9009\u62e9 Java \u7c7b\u7684\u9009\u9879\u5c06\u751f\u6210\u6700\u5c0f\u7c7b\u7684\u4e3b\u4f53\uff0c\u4f8b\u5982 <code>public class HelloWorld { }<\/code>\u3002\u7531\u4e8e\u6211\u4eec\u4e00\u5f00\u59cb\u5c31\u8bd5\u56fe\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u5173\u952e\u5b57\uff0c\u6211\u5efa\u8bae\u521b\u5efa\u4e00\u4e2a\u4e0d\u5305\u542b\u4efb\u4f55\u4ee3\u7801\u7684\u65b0\u6587\u4ef6\u3002<\/div>\n<h3>\u9664\u4e86\u5c06\u6d88\u606f\u6253\u5370\u5230\u63a7\u5236\u53f0\u4e4b\u5916\uff0cmain() \u8fd8\u80fd\u505a\u4ec0\u4e48\uff1f<\/h3>\n<div id=\"crowdin_phrase_33850066\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\">\u5728<a href=\"https:\/\/blog.jetbrains.com\/idea\/2024\/02\/helloworld-and-main-meet-minimalistic\/\">\u8be6\u7ec6\u4ecb\u7ecd\u6b64\u4e3b\u9898\u7684\u535a\u6587\u4e2d<\/a>\uff0c\u6211\u63d0\u4f9b\u4e86\u591a\u4e2a\u5b9e\u64cd\u793a\u4f8b\u6765\u5c55\u793a\u4ec5\u901a\u8fc7 <code>main()<\/code> \u65b9\u6cd5\u5c31\u80fd\u5f97\u5230\u7684\u7ed3\u679c\uff1a<\/div>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li>\n<div id=\"crowdin_phrase_33850070\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\"><a href=\"https:\/\/blog.jetbrains.com\/idea\/2024\/02\/helloworld-and-main-meet-minimalistic\/#example-1.-variable-declarations,-assignments-and-simple-calculations\">\u793a\u4f8b 1.<\/a><\/div>\n<div id=\"crowdin_phrase_33850072\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\"><a href=\"https:\/\/blog.jetbrains.com\/idea\/2024\/02\/helloworld-and-main-meet-minimalistic\/#example-1.-variable-declarations,-assignments-and-simple-calculations\">\u53d8\u91cf\u58f0\u660e\u3001\u8d4b\u503c\u548c\u7b80\u5355\u8ba1\u7b97<\/a><\/div>\n<\/li>\n<li>\n<div id=\"crowdin_phrase_33850076\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\"><a href=\"https:\/\/blog.jetbrains.com\/idea\/2024\/02\/helloworld-and-main-meet-minimalistic\/#example-2.-print-patterns,-such-as,-big-letters-using-a-specified-character\">\u793a\u4f8b 2.<\/a><\/div>\n<div id=\"crowdin_phrase_33850078\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\"><a href=\"https:\/\/blog.jetbrains.com\/idea\/2024\/02\/helloworld-and-main-meet-minimalistic\/#example-2.-print-patterns,-such-as,-big-letters-using-a-specified-character\">\u6253\u5370\u6a21\u5f0f\uff0c\u4f8b\u5982\u4f7f\u7528\u6307\u5b9a\u5b57\u7b26\u7684\u5927\u5b57\u6bcd<\/a><\/div>\n<\/li>\n<li>\n<div id=\"crowdin_phrase_33850082\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\"><a href=\"https:\/\/blog.jetbrains.com\/idea\/2024\/02\/helloworld-and-main-meet-minimalistic\/#example-3.-animating-multiline-text-\u2013-one-word-at-a-time\">\u793a\u4f8b 3.<\/a><\/div>\n<div id=\"crowdin_phrase_33850084\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\"><a href=\"https:\/\/blog.jetbrains.com\/idea\/2024\/02\/helloworld-and-main-meet-minimalistic\/#example-3.-animating-multiline-text-\u2013-one-word-at-a-time\">\u4e3a\u591a\u884c\u6587\u672c\u6dfb\u52a0\u52a8\u753b \u2013 \u4e00\u6b21\u4e00\u4e2a\u5355\u8bcd<\/a><\/div>\n<\/li>\n<li>\n<div id=\"crowdin_phrase_33850088\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\"><a href=\"https:\/\/blog.jetbrains.com\/idea\/2024\/02\/helloworld-and-main-meet-minimalistic\/#example-4.-data-structure-problems\">\u793a\u4f8b 4.<\/a><\/div>\n<div id=\"crowdin_phrase_33850090\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\"><a href=\"https:\/\/blog.jetbrains.com\/idea\/2024\/02\/helloworld-and-main-meet-minimalistic\/#example-4.-data-structure-problems\">\u6570\u636e\u7ed3\u6784\u95ee\u9898<\/a><\/div>\n<\/li>\n<li>\n<div id=\"crowdin_phrase_33850094\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\"><a href=\"https:\/\/blog.jetbrains.com\/idea\/2024\/02\/helloworld-and-main-meet-minimalistic\/#example-5.-text-based-hangman-game\">\u793a\u4f8b 5.<\/a><\/div>\n<div id=\"crowdin_phrase_33850096\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\"><a href=\"https:\/\/blog.jetbrains.com\/idea\/2024\/02\/helloworld-and-main-meet-minimalistic\/#example-5.-text-based-hangman-game\">\u57fa\u4e8e\u6587\u672c\u7684 Hangman \u6e38\u620f<\/a><\/div>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<div title=\"\">\u00a0<\/div>\n<div id=\"crowdin_phrase_33850098\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\">\u4ee5\u4e0a\u793a\u4f8b\u662f\u4e3a\u4e86\u5c55\u793a\u5e8f\u5217\u3001\u6761\u4ef6\u548c\u8fed\u4ee3\u7684\u5f3a\u5927\u529f\u80fd\uff0c\u8fd9\u4e9b\u90fd\u53ef\u4ee5\u5305\u542b\u5728 <code>main()<\/code> \u65b9\u6cd5\u4e2d\uff0c\u4ee5\u89e3\u51b3\u5b9e\u9645\u95ee\u9898\u7684\u6280\u80fd\u5960\u5b9a\u826f\u597d\u7684\u7f16\u7a0b\u57fa\u7840\u3002\u4f7f\u7528\u8fd0\u884c\u547d\u4ee4\u6216\u56fe\u6807\u5728 IntelliJ IDEA \u4e2d\u8fd0\u884c\u548c\u6267\u884c\u4ee3\u7801\uff0c\u65b0\u7a0b\u5e8f\u5458\u5728\u5165\u95e8\u65f6\u53c8\u7701\u53bb\u4e86\u4e00\u4e2a\u6b65\u9aa4\u3002<\/div>\n<h3 class=\"wp-block-heading\">\u5c06\u9690\u5f0f\u7c7b\u6539\u4e3a\u5e38\u89c4\u7c7b<\/h3>\n<p><!-- \/wp:heading --><\/p>\n<p><!-- wp:paragraph --><\/p>\n<div id=\"crowdin_phrase_33850104\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\">\u5f53\u60a8\u51c6\u5907\u597d\u5347\u7ea7\u5e76\u4f7f\u7528\u5176\u4ed6\u6982\u5ff5\uff08\u4f8b\u5982\u7528\u6237\u5b9a\u4e49\u7684\u7c7b\uff09\u65f6\uff0c\u60a8\u8fd8\u53ef\u4ee5\u5c06\u6211\u4eec\u5728\u524d\u9762\u7684\u793a\u4f8b\u4e2d\u4f7f\u7528\u7684\u9690\u5f0f\u7c7b\u548c\u4ee3\u7801\u8f6c\u6362\u4e3a\u5e38\u89c4\u7c7b\uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/div>\n<p><!-- \/wp:paragraph --><\/p>\n<p><!-- wp:image {\"id\":16062} --><\/p>\n<figure class=\"wp-block-image\"><img decoding=\"async\" class=\"wp-image-16062\" src=\"https:\/\/blog.jetbrains.com\/wp-content\/uploads\/2024\/02\/convert-to-regular-class.gif\" alt=\"\" \/><\/figure>\n<p><!-- \/wp:image --><\/p>\n<h3 class=\"wp-block-heading\">\u4f7f\u7528 main() \u65b9\u6cd5\u521b\u5efa\u6e90\u4ee3\u7801\u6587\u4ef6\u4f46\u6ca1\u6709\u7c7b\u58f0\u660e\u65f6\u4f1a\u53d1\u751f\u4ec0\u4e48\uff1f<\/h3>\n<p><!-- \/wp:heading --><\/p>\n<p><!-- wp:paragraph --><\/p>\n<div id=\"crowdin_phrase_33850110\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\">\u5728\u540e\u53f0\uff0cJava \u7f16\u8bd1\u5668\u4f1a\u521b\u5efa\u4e00\u4e2a\u9690\u5f0f\u9876\u5c42\u7c7b\uff0c\u5e26\u6709\u65e0\u5b9e\u53c2\u6784\u9020\u51fd\u6570\uff0c\u56e0\u6b64\u8fd9\u4e9b\u7c7b\u4e0d\u9700\u8981\u4ee5\u4e0e\u5e38\u89c4\u7c7b\u4e0d\u540c\u7684\u65b9\u5f0f\u5904\u7406\u3002<\/div>\n<div title=\"\">\u00a0<\/div>\n<div id=\"crowdin_phrase_33850112\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\">\u4ee5\u4e0b gif \u5c55\u793a\u4e86\u6e90\u4ee3\u7801\u6587\u4ef6 AnimateText.java \u7684\u53cd\u7f16\u8bd1\u7c7b\uff1a<\/div>\n<p><!-- \/wp:paragraph --><\/p>\n<p><!-- wp:paragraph --><\/p>\n<p><!-- \/wp:paragraph --><\/p>\n<p><!-- wp:image {\"id\":16062} --><\/p>\n<figure class=\"wp-block-image\"><img decoding=\"async\" class=\"wp-image-16062\" src=\"https:\/\/blog.jetbrains.com\/wp-content\/uploads\/2024\/02\/decompile.gif\" alt=\"\" \/><\/figure>\n<h3 class=\"wp-block-heading\">\u9690\u5f0f\u7c7b\u4e2d main \u65b9\u6cd5\u7684\u53d8\u4f53<\/h3>\n<p><!-- \/wp:heading --><\/p>\n<p><!-- wp:paragraph --><\/p>\n<p>\u4f17\u6240\u5468\u77e5\uff0c\u65b9\u6cd5\u53ef\u4ee5\u88ab\u91cd\u8f7d\u3002 \u8fd9\u662f\u5426\u610f\u5473\u7740\u9690\u5f0f\u7c7b\u53ef\u4ee5\u5b9a\u4e49\u591a\u4e2a main \u65b9\u6cd5\uff1f \u5982\u679c\u7b54\u6848\u662f\u80af\u5b9a\u7684\uff0c\u90a3\u4e48\u54ea\u4e00\u4e2a\u6709\u8d44\u683c\u4f5c\u4e3a\u4e3b\u8981\u7684 main \u65b9\u6cd5\uff1f\u8fd9\u662f\u4e00\u4e2a\u6709\u8da3\u7684\u95ee\u9898\u3002 \u9996\u5148\uff0c\u8bf7\u6ce8\u610f\uff0c\u60a8\u4e0d\u80fd\u5b9a\u4e49\u5177\u6709\u76f8\u540c\u7b7e\u540d\uff08\u5373\u5177\u6709\u76f8\u540c\u65b9\u6cd5\u5f62\u53c2\uff09\u7684 static \u548c\u975e static main \u65b9\u6cd5\u3002 \u4ee5\u4e0b\u65b9\u6cd5\u88ab\u89c6\u4e3a\u9690\u5f0f\u7c7b\u4e2d\u6709\u6548\u7684 main() \u65b9\u6cd5\uff1a<\/p>\n<p><!-- \/wp:paragraph --><\/p>\n<p><!-- wp:enlighter\/codeblock --><\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">public static void main(String args[]) {}\npublic void main(String args[]) {}\npublic static void main() {}\nstatic void main() {}\npublic void main() {}\nvoid main() {}\n<\/pre>\n<p><!-- \/wp:enlighter\/codeblock --><\/p>\n<p><!-- wp:paragraph --><\/p>\n<p>\u5982\u679c\u6ca1\u6709\u68c0\u6d4b\u5230\u6709\u6548\u7684 main \u65b9\u6cd5\uff0cIntelliJ IDEA \u53ef\u4ee5\u4e3a\u60a8\u6dfb\u52a0\u4e00\u4e2a\uff0c\u5982\u4ee5\u4e0b gif \u6240\u793a\uff1a<\/p>\n<p><!-- \/wp:paragraph --><\/p>\n<p><!-- wp:image {\"id\":16062} --><\/p>\n<figure class=\"wp-block-image\"><img decoding=\"async\" class=\"wp-image-16062\" src=\"https:\/\/blog.jetbrains.com\/wp-content\/uploads\/2024\/02\/create-a-main-method.gif\" alt=\"\" \/><\/figure>\n<p><!-- \/wp:image --><\/p>\n<h3 class=\"wp-block-heading\">\u6559\u80b2\u5de5\u4f5c\u8005\u53ef\u4ee5\u4f7f\u7528\u6b64\u529f\u80fd\u5411\u5b66\u751f\u9010\u6b65\u4ecb\u7ecd\u5176\u4ed6\u6982\u5ff5<\/h3>\n<p><!-- \/wp:heading --><\/p>\n<p><!-- wp:paragraph --><\/p>\n<div id=\"crowdin_phrase_33850136\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\">\u5982\u679c\u60a8\u662f\u6559\u80b2\u5de5\u4f5c\u8005\uff0c\u60a8\u53ef\u4ee5\u5411\u5b66\u751f\u4ecb\u7ecd\u5176\u4ed6\u5e38\u7528\u7f16\u7a0b\u505a\u6cd5\uff0c\u4f8b\u5982\u521b\u5efa\u65b9\u6cd5\uff0c\u5373\u5c06\u90e8\u5206\u4ee3\u7801\u59d4\u6258\u7ed9\u53e6\u4e00\u4e2a\u65b9\u6cd5\u5e76\u4ece main \u65b9\u6cd5\u8c03\u7528\u60a8\u8fd8\u53ef\u4ee5\u4ecb\u7ecd\u5411\u8fd9\u4e9b\u65b9\u6cd5\u4f20\u9012\u503c\u4e0e\u53d8\u91cf\u3002<\/div>\n<div title=\"\">\u00a0<\/div>\n<div id=\"crowdin_phrase_33850140\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\">\u4e0b\u9762\u7684 gif \u663e\u793a\u4e86\u6b64\u8fc7\u7a0b\uff1a<\/div>\n<p><!-- \/wp:paragraph --><\/p>\n<p><!-- wp:paragraph --><\/p>\n<p><!-- \/wp:paragraph --><\/p>\n<p><!-- wp:image {\"id\":16062} --><\/p>\n<figure class=\"wp-block-image\"><img decoding=\"async\" class=\"wp-image-16062\" src=\"https:\/\/blog.jetbrains.com\/wp-content\/uploads\/2024\/02\/extract-method-inline-variables.gif\" alt=\"\" \/><\/figure>\n<h2>super() \u4e4b\u524d\u7684\u8bed\u53e5 \u2013 \u9884\u89c8\u8bed\u8a00\u529f\u80fd<\/h2>\n<div id=\"crowdin_phrase_33850146\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\">\u901a\u5e38\uff0c\u6211\u4eec\u4f1a\u4e3a\u5fc5\u8981\u4f46\u672a\u7ecf\u5b98\u65b9\u5141\u8bb8\u7684\u4efb\u52a1\u521b\u5efa\u66ff\u4ee3\u89e3\u51b3\u65b9\u6848\u3002\u4f8b\u5982\uff0c\u5b98\u65b9\u672a\u5141\u8bb8\u5728\u6d3e\u751f\u7c7b\u6784\u9020\u51fd\u6570\u4e2d\u4e8e <code>super()<\/code> \u4e4b\u524d\u6267\u884c\u8bed\u53e5\uff0c\u867d\u7136\u8fd9\u5bf9\u4e8e\u9a8c\u8bc1\u4f20\u9012\u7ed9\u57fa\u7c7b\u6784\u9020\u51fd\u6570\u7684\u503c\u5f88\u91cd\u8981\u3002\u4e00\u79cd\u6d41\u884c\u53d8\u901a\u65b9\u6cd5\u662f\u521b\u5efa static \u65b9\u6cd5\u9a8c\u8bc1\u503c\uff0c\u7136\u540e\u5bf9 <code>super()<\/code> \u7684\u5b9e\u53c2\u8c03\u7528\u8fd9\u4e9b\u65b9\u6cd5\u3002\u5c3d\u7ba1\u8fd9\u79cd\u65b9\u5f0f\u6548\u679c\u5f88\u597d\uff0c\u4f46\u5b83\u53ef\u80fd\u4f1a\u4f7f\u4ee3\u7801\u770b\u8d77\u6765\u5f88\u590d\u6742\u3002Java 22 \u4e2d\u7684\u9884\u89c8\u8bed\u8a00\u529f\u80fd\uff0c<a href=\"https:\/\/openjdk.org\/jeps\/447\" target=\"_blank\" rel=\"noopener\">super() \u4e4b\u524d\u7684\u8bed\u53e5<\/a>\uff0c\u5c06\u6539\u53d8\u8fd9\u79cd\u60c5\u51b5\u3002<\/div>\n<div title=\"\">\u00a0<\/div>\n<div id=\"crowdin_phrase_33850156\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\">\u4f7f\u7528\u6b64\u529f\u80fd\uff0c\u60a8\u53ef\u4ee5\u6446\u8131\u521b\u5efa static \u65b9\u6cd5\u7684\u53d8\u901a\u65b9\u6cd5\uff0c\u5728\u8c03\u7528 <code>super()<\/code> \u4e4b\u524d\u6267\u884c\u9a8c\u8bc1\u5b9e\u53c2\u7684\u4ee3\u7801\u6761\u6b3e\u4e0e\u6761\u4ef6\u4ecd\u7136\u9002\u7528\uff0c\u4f8b\u5982\uff0c\u5728 <code>super()<\/code> \u6267\u884c\u5b8c\u6210\u4e4b\u524d\u4e0d\u8bbf\u95ee\u6d3e\u751f\u7c7b\u7684\u5b9e\u4f8b\u6210\u5458\u3002<\/div>\n<h3>\u793a\u4f8b \u2013 \u5728\u6d3e\u751f\u7c7b\u6784\u9020\u51fd\u6570\u4e2d\u9a8c\u8bc1\u4f20\u9012\u7ed9 super() \u7684\u503c<\/h3>\n<div id=\"crowdin_phrase_33850162\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\">\u5047\u8bbe\u60a8\u9700\u8981\u521b\u5efa\u4e00\u4e2a\u7c7b <code>IndustryElement<\/code> \u6765\u6269\u5c55\u7c7b <code>Element<\/code>\uff0c\u5176\u5b9a\u4e49\u5982\u4e0b\uff1a<\/div>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"\">\npublic class Element {\n   int atomicNumber;\n   Color color;\n\n   public Element(int atomicNumber, Color color) {\n       if (color == null)\n           throw new IllegalArgumentException(&quot;color is null&quot;);\n       this.atomicNumber = atomicNumber;\n       this.color = color;\n   }\n    \/\/ rest of the code\n}<\/pre>\n<div id=\"crowdin_phrase_33850166\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\">\u7c7b <code>Element<\/code> \u7684\u6784\u9020\u51fd\u6570\u672a\u68c0\u67e5 <code>atomicNumber<\/code> \u662f\u5426\u5728 1-118 \u8303\u56f4\u5185\uff08\u6240\u6709\u5df2\u77e5\u5143\u7d20\u7684\u539f\u5b50\u5e8f\u6570\u5728 1 \u5230 118 \u4e4b\u95f4\uff09\u3002\u901a\u5e38\uff0c\u57fa\u7c7b\u7684\u6e90\u4ee3\u7801\u4e0d\u53ef\u8bbf\u95ee\u6216\u5f00\u653e\u4fee\u6539\u3002\u60a8\u5c06\u5982\u4f55\u5728 <code>IndustryElement<\/code> \u7c7b\u7684\u6784\u9020\u51fd\u6570\u4e2d\u9a8c\u8bc1\u4f20\u9012\u7ed9 <code>atomicNumber<\/code> \u7684\u503c\uff1f<\/div>\n<div title=\"\">\u00a0<\/div>\n<div id=\"crowdin_phrase_33850172\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\">\u5728 Java 21 \u4e4b\u524d\uff0c\u4e0d\u5141\u8bb8\u5728 <code>super()<\/code> \u4e4b\u524d\u6267\u884c\u4efb\u4f55\u8bed\u53e5\u3002\u5f00\u53d1\u8005\u901a\u8fc7\u5b9a\u4e49\u548c\u8c03\u7528 static \u65b9\u6cd5\u627e\u51fa\u4e00\u4e2a\u53d8\u901a\u65b9\u6cd5\uff08static \u65b9\u6cd5\u5c5e\u4e8e\u7c7b\u800c\u4e0d\u5c5e\u4e8e\u5b9e\u4f8b\uff0c\u5e76\u4e14\u53ef\u4ee5\u5728\u7c7b\u7684\u4efb\u4f55\u5b9e\u4f8b\u5b58\u5728\u4e4b\u524d\u6267\u884c\uff09\uff1a<\/div>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"\">\npublic class IndustryElement extends Element{\n   private static final int MIN_ATOMIC_NUMBER = 1;\n   private static final int MAX_ATOMIC_NUMBER = 118;\n  \n   public IndustryElement(int atomicNumber, Color color) {\n       super(checkRange(atomicNumber, MIN_ATOMIC_NUMBER , MAX_ATOMIC_NUMBER), color);\n   }\n\n   private static int checkRange(int value, int lowerBound, int upperBound) {\n       if (value &lt; lowerBound || value &gt; upperBound)\n           throw new IllegalArgumentException(&quot;Atomic number out of range&quot;);\n       return value;\n   }\n}<\/pre>\n<p>\u4ece Java 22 \u5f00\u59cb\uff0c\u60a8\u53ef\u4ee5\u5728\u6d3e\u751f\u7c7b\u7684\u6784\u9020\u51fd\u6570\u4e2d\u5185\u8054 static \u65b9\u6cd5\u7684\u5185\u5bb9\uff0c\u5982\u4ee5\u4e0b gif \u6240\u793a\uff1a<\/p>\n<figure class=\"wp-block-image alignnone wp-image-16062\"><img decoding=\"async\" src=\"https:\/\/blog.jetbrains.com\/wp-content\/uploads\/2024\/02\/inline-method-super.gif\" alt=\"\" \/><\/figure>\n<p>\u8fd9\u662f\u751f\u6210\u7684\u4ee3\u7801\uff1a<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"\">\npublic class IndustryElement extends Element{\n    private static final int MIN_ATOMIC_NUMBER = 1;\n    private static final int MAX_ATOMIC_NUMBER = 118;\n\n    public IndustryElement(int atomicNumber, Color color) {\n        if (atomicNumber &lt; MIN_ATOMIC_NUMBER || atomicNumber &gt; MAX_ATOMIC_NUMBER)\n            throw new IllegalArgumentException(&quot;Atomic number out of range&quot;);\n        super(atomicNumber, color);\n    }\n}<\/pre>\n<h3>\u60a8\u8fd8\u4f1a\u5728\u54ea\u91cc\u4f7f\u7528\u6b64\u529f\u80fd\uff1f<\/h3>\n<div id=\"crowdin_phrase_33850188\" class=\"crowdin_phrase crowdin_phrase_approved status_select\" title=\"\">\u5982\u679c\u60a8\u4e0d\u719f\u6089\u6b64\u529f\u80fd\uff0c\u6211\u5efa\u8bae\u9605\u8bfb\u6211\u7684\u8be6\u7ec6\u535a\u6587 <a href=\"https:\/\/blog.jetbrains.com\/idea\/2024\/02\/constructor-makeover-in-java-22\/\">Constructor Makeover in Java 22<\/a>\uff0c\u5176\u4e2d\u6211\u4f7f\u7528\u4ee5\u4e0b\u793a\u4f8b\u8be6\u7ec6\u4ecb\u7ecd\u4e86\u6b64\u529f\u80fd\uff1a<\/div>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li>\n<div id=\"crowdin_phrase_33850192\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\"><a href=\"https:\/\/blog.jetbrains.com\/idea\/2024\/02\/constructor-makeover-in-java-22\/#example-2-\u2013-base-class-constructor-parameters-that-use-annotations-for-validations\">\u793a\u4f8b 2 \u2013 \u4f7f\u7528\u6ce8\u89e3\u8fdb\u884c\u9a8c\u8bc1\u7684\u57fa\u7c7b\u6784\u9020\u51fd\u6570\u5f62\u53c2<\/a><\/div>\n<\/li>\n<li>\n<div id=\"crowdin_phrase_33850196\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\"><a href=\"https:\/\/blog.jetbrains.com\/idea\/2024\/02\/constructor-makeover-in-java-22\/#example-3-\u2013-transforming-variable-values-received-in-a-derived-class-constructor,-before-calling-a-base-class-constructor.\">\u793a\u4f8b 3 \u2013 \u5728\u8c03\u7528\u57fa\u7c7b\u6784\u9020\u51fd\u6570\u4e4b\u524d\uff0c\u8f6c\u6362\u6d3e\u751f\u7c7b\u6784\u9020\u51fd\u6570\u4e2d\u63a5\u6536\u7684\u53d8\u91cf\u503c\u3002<\/a><\/div>\n<\/li>\n<li>\n<div id=\"crowdin_phrase_33850200\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\"><a href=\"https:\/\/blog.jetbrains.com\/idea\/2024\/02\/constructor-makeover-in-java-22\/#example-4-\u2013-executing-statements-before-this-in-constructor-of-records\">\u793a\u4f8b 4 \u2013 \u5728 Records \u7684\u6784\u9020\u51fd\u6570\u4e2d\u4e8e this() \u4e4b\u524d\u6267\u884c\u8bed\u53e5<\/a><\/div>\n<\/li>\n<li>\n<div id=\"crowdin_phrase_33850204\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\"><a href=\"https:\/\/blog.jetbrains.com\/idea\/2024\/02\/constructor-makeover-in-java-22\/#example-5-\u2013-executing-statements-before-this-in-enum-constructors\">\u793a\u4f8b 5 \u2013 \u5728 Enum \u6784\u9020\u51fd\u6570\u4e2d\u4e8e this() \u4e4b\u524d\u6267\u884c\u8bed\u53e5<\/a><\/div>\n<\/li>\n<li>\n<div id=\"crowdin_phrase_33850208\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\"><a href=\"https:\/\/blog.jetbrains.com\/idea\/2024\/02\/constructor-makeover-in-java-22\/#example-6-\u2013-executing-statements-before-this-in-classes\">\u793a\u4f8b 6 \u2013 \u5728\u7c7b\u4e2d\u4e8e this() \u4e4b\u524d\u6267\u884c\u8bed\u53e5<\/a><\/div>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3>\u5b83\u5728\u540e\u53f0\u662f\u5982\u4f55\u8fd0\u4f5c\u7684\uff1f<\/h3>\n<div id=\"crowdin_phrase_33850212\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\">\u8bed\u8a00\u8bed\u6cd5\u5df2\u7ecf\u653e\u5bbd\uff0c\u4f46\u4e0d\u4f1a\u6539\u53d8\u6216\u5f71\u54cd\u5185\u90e8 JVM \u6307\u4ee4\u3002\u6b64\u65b0\u529f\u80fd\u7684 JVM \u6307\u4ee4\u6ca1\u6709\u53d8\u5316\uff0c\u56e0\u4e3a\u6784\u9020\u51fd\u6570\u7684\u6267\u884c\u987a\u5e8f\u4fdd\u6301\u4e0d\u53d8\uff1a\u4ece\u57fa\u7c7b\u5230\u6d3e\u751f\u7c7b\u3002\u6b64\u5916\uff0c\u5728 <code>super()<\/code> \u6267\u884c\u4e4b\u524d\uff0c\u6b64\u529f\u80fd\u4ecd\u7136\u4e0d\u5141\u8bb8\u4f7f\u7528\u6d3e\u751f\u7c7b\u5b9e\u4f8b\u7684\u6210\u5458\u3002<\/div>\n<div title=\"\">\u00a0<\/div>\n<div id=\"crowdin_phrase_33850218\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\">\u6211\u4eec\u6765\u8bbf\u95ee\u548c\u6bd4\u8f83 <code>IndustryElement<\/code> \u7c7b\u7684\u6784\u9020\u51fd\u6570\u5728\u4fee\u6539\u524d\u540e\u7684\u6307\u4ee4\u96c6 \u2013 \u4e00\u4e2a\u53ef\u4ee5\u5728 <code>super()<\/code> \u4e4b\u524d\u6267\u884c\u8bed\u53e5\uff0c\u53e6\u4e00\u4e2a\u5219\u4e0d\u53ef\u4ee5\u3002<\/div>\n<div title=\"\">\u00a0<\/div>\n<div class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\">\u4e3a\u6b64\uff0c\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/div>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"\">\njavap -c IndustryElement.class<\/pre>\n<div id=\"crowdin_phrase_33850224\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\">\u4ee5\u4e0b\u6307\u4ee4\u96c6\u9002\u7528\u7684\u6784\u9020\u51fd\u6570\u5728 <code>super()<\/code> \u4e4b\u524d\u4e0d\u660e\u786e\u6267\u884c\u8bed\u53e5\uff0c\u4f46\u8c03\u7528 static \u65b9\u6cd5\u9a8c\u8bc1\u539f\u5b50\u5e8f\u6570\u7684\u8303\u56f4\uff1a<\/div>\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/blog.jetbrains.com\/wp-content\/uploads\/2024\/02\/instructions-1.png\" alt=\"\" \/><\/figure>\n<div id=\"crowdin_phrase_33850228\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\">\u4ee5\u4e0b\u6307\u4ee4\u96c6\u9002\u7528\u7684\u6784\u9020\u51fd\u6570\u5728 super() \u4e4b\u524d\u660e\u786e\u6267\u884c\u8bed\u53e5\u6765\u9a8c\u8bc1\u539f\u5b50\u5e8f\u6570\u7684\u8303\u56f4\uff1a<\/div>\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/blog.jetbrains.com\/wp-content\/uploads\/2024\/02\/instructions-2.png\" alt=\"\" \/><\/figure>\n<div title=\"\">\u00a0<\/div>\n<div id=\"crowdin_phrase_33850232\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\">\u8fd9\u91cc\u6700\u91cd\u8981\u7684\u4e00\u70b9\u662f\uff0c\u5728\u8fd9\u4e24\u79cd\u60c5\u51b5\u4e0b\uff0c\u57fa\u7c7b\u7684\u6784\u9020\u51fd\u6570\uff08\u5373 <code>Element<\/code>\uff09\u90fd\u4f1a\u5728\u6267\u884c\u6240\u6709\u5176\u4ed6\u8bed\u53e5\u4e4b\u540e\u88ab\u8c03\u7528\u3002\u672c\u8d28\u4e0a\u8bb2\uff0c\u8fd9\u610f\u5473\u7740\u60a8\u4ecd\u7136\u5728\u6267\u884c\u540c\u6837\u7684\u64cd\u4f5c\uff0c\u53ea\u662f\u5f62\u5f0f\u4e0a\u66f4\u65b9\u4fbf\u3002<\/div>\n<div title=\"\">\u00a0<\/div>\n<div id=\"crowdin_phrase_33850236\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\">\u6211\u77e5\u9053\uff0c\u8981\u8bb0\u4f4f\u6bcf\u4e2a\u6307\u4ee4\u4ee3\u7801\u7684\u542b\u4e49\u5e76\u4e0d\u5bb9\u6613\u3002\u8bbf\u95ee\u4ee5\u4e0b\u94fe\u63a5\u641c\u7d22\u6307\u4ee4\u4ee3\u7801\uff0c\u5c31\u53ef\u4ee5\u66f4\u8f7b\u677e\u5730\u6309\u7167\u4e0a\u8ff0\u6307\u4ee4\u96c6\u64cd\u4f5c\uff1a<\/div>\n<p><a href=\"https:\/\/docs.oracle.com\/javase\/specs\/jvms\/se21\/html\/jvms-6.html#jvms-6.5.aload_n\" target=\"_blank\" rel=\"noopener\">https:\/\/docs.oracle.com\/javase\/specs\/jvms\/se21\/html\/jvms-6.html#jvms-6.5.aload_n<\/a><\/p>\n<h3>\u5728\u8c03\u7528 super() \u4e4b\u524d\u53ef\u4ee5\u6267\u884c\u201c\u4efb\u4f55\u201d\u8bed\u53e5\u5417\uff1f<\/h3>\n<div id=\"crowdin_phrase_33850246\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\">\u4e0d\u53ef\u4ee5\u3002\u5982\u679c <code>super()<\/code> \u4e4b\u524d\u7684\u8bed\u53e5\u5c1d\u8bd5\u8bbf\u95ee\u6d3e\u751f\u7c7b\u7684\u5b9e\u4f8b\u53d8\u91cf\u6216\u6267\u884c\u65b9\u6cd5\uff0c\u4ee3\u7801\u5c06\u65e0\u6cd5\u7f16\u8bd1\u3002<\/div>\n<div id=\"crowdin_phrase_33850250\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\">\u4f8b\u5982\uff0c\u5982\u679c\u5c06 static <code>checkRange()<\/code> \u65b9\u6cd5\u66f4\u6539\u4e3a\u5b9e\u4f8b\u65b9\u6cd5\uff0c\u4ee3\u7801\u5c06\u65e0\u6cd5\u7f16\u8bd1\uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/div>\n<figure class=\"wp-block-image alignnone wp-image-16062\"><img decoding=\"async\" src=\"https:\/\/blog.jetbrains.com\/wp-content\/uploads\/2024\/02\/instance-method-error.gif\" alt=\"\" \/><\/figure>\n<h2>\u672a\u547d\u540d\u53d8\u91cf\u548c\u6a21\u5f0f<\/h2>\n<div id=\"crowdin_phrase_33850256\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\">\u4ece Java 22 \u5f00\u59cb\uff0c\u4f7f\u7528<a href=\"https:\/\/openjdk.org\/jeps\/456\" target=\"_blank\" rel=\"noopener\">\u672a\u547d\u540d\u53d8\u91cf\u548c\u6a21\u5f0f<\/a>\uff0c\u60a8\u53ef\u4ee5\u5c06\u672a\u4f7f\u7528\u7684\u5c40\u90e8\u53d8\u91cf\u3001\u6a21\u5f0f\u548c\u6a21\u5f0f\u53d8\u91cf\u6807\u8bb0\u4e3a\u5ffd\u7565\uff0c\u4f7f\u7528\u4e0b\u5212\u7ebf <code>_<\/code> \u66ff\u6362\u5176\u540d\u79f0\uff08\u6216\u5176\u7c7b\u578b\u548c\u540d\u79f0\uff09\u3002\u7531\u4e8e\u6b64\u7c7b\u53d8\u91cf\u548c\u6a21\u5f0f\u4e0d\u518d\u6709\u540d\u79f0\uff0c\u5b83\u4eec\u88ab\u79f0\u4e3a\u672a\u547d\u540d\u53d8\u91cf\u548c\u6a21\u5f0f\u3002\u5ffd\u7565\u672a\u4f7f\u7528\u7684\u53d8\u91cf\u5c06\u51cf\u5c11\u7406\u89e3\u4ee3\u7801\u6bb5\u6240\u9700\u7684\u65f6\u95f4\u548c\u7cbe\u529b\u3002\u672a\u6765\uff0c\u8fd9\u53ef\u4ee5\u9632\u6b62\u9519\u8bef :-)\u3002\u6b64\u8bed\u8a00\u529f\u80fd\u4e0d\u9002\u7528\u4e8e\u5b9e\u4f8b\u6216\u7c7b\u53d8\u91cf\u3002<\/div>\n<div title=\"\">\u00a0<\/div>\n<div id=\"crowdin_phrase_33850266\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\">\u60a8\u662f\u5426\u60f3\u77e5\u9053\u4f7f\u7528 <code>_<\/code> \u66ff\u6362\u672a\u4f7f\u7528\u7684\u53d8\u91cf\u662f\u5426\u603b\u662f\u4e00\u4e2a\u597d\u4e3b\u610f\uff0c\u6216\u8005\u5b83\u4eec\u662f\u5426\u610f\u5473\u7740\u4ee3\u7801\u5f02\u5473\uff0c\u60a8\u53c8\u662f\u5426\u5e94\u8be5\u8003\u8651\u91cd\u6784\u4ee3\u7801\u5e93\u6765\u5c06\u5176\u79fb\u9664\uff1f\u8fd9\u4e9b\u90fd\u662f\u5f88\u597d\u7684\u95ee\u9898\u3002\u5982\u679c\u60a8\u4e0d\u719f\u6089\u8fd9\u4e2a\u4e3b\u9898\uff0c\u6211\u5efa\u8bae\u9605\u8bfb\u6211\u7684\u8be6\u7ec6\u535a\u6587 <a href=\"https:\/\/blog.jetbrains.com\/idea\/2024\/03\/drop-the-baggage-use-_-for-unnamed-local-variables-and-patterns-in-java-22\/\">Drop the Baggage: Use \u2018_\u2019 for Unnamed Local Variables and Patterns in Java 22<\/a> \u83b7\u53d6\u95ee\u9898\u7684\u7b54\u6848\u3002<\/div>\n<h3>IntelliJ IDEA \u914d\u7f6e<\/h3>\n<div id=\"crowdin_phrase_33850274\" class=\"crowdin_phrase crowdin_phrase_approved status_select\" title=\"\">\u7531\u4e8e\u8fd9\u4e0d\u662f\u9884\u89c8\u8bed\u8a00\u529f\u80fd\uff0c\u9700\u8981\u5728 Project Settings\uff08\u9879\u76ee\u8bbe\u7f6e\uff09\u4e2d\u7684 Project\uff08\u9879\u76ee\uff09\u548c Modules\uff08\u6a21\u5757\uff09\u6807\u7b7e\u9875\u4e0a\u5c06 Language Level\uff08\u8bed\u8a00\u7ea7\u522b\uff09\u8bbe\u4e3a 22 \u2013 Unnamed variables and patterns\uff0c\u5982\u4ee5\u4e0b\u8bbe\u7f6e\u5c4f\u5e55\u622a\u56fe\u6240\u793a\uff1a<\/div>\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/blog.jetbrains.com\/wp-content\/uploads\/2024\/03\/config1.png\" alt=\"\" \/><\/figure>\n<h3>\u4e00\u4e2a\u5feb\u901f\u793a\u4f8b<\/h3>\n<div id=\"crowdin_phrase_33850280\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\">\u4ee5\u4e0b gif \u5c55\u793a\u4e86\u672a\u4f7f\u7528\u7684\u5c40\u90e8\u53d8\u91cf connection \u5982\u4f55\u88ab IntelliJ IDEA \u68c0\u6d4b\u5e76\u7528\u4e0b\u5212\u7ebf <code>_<\/code> \u66ff\u6362\u3002<\/div>\n<figure class=\"wp-block-image\"><img decoding=\"async\" class=\"wp-image-16062\" src=\"https:\/\/blog.jetbrains.com\/wp-content\/uploads\/2024\/03\/unused-variable-trailer.gif\" alt=\"\" \/><\/figure>\n<div title=\"\">\u00a0<\/div>\n<div id=\"crowdin_phrase_33850292\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\">\n<div id=\"crowdin_phrase_33850284\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\">\u524d\u9762 gif \u4e2d\u663e\u793a\u7684\u4fee\u6539\u540e\u7684\u4ee3\u7801\u6e05\u695a\u8868\u660e\uff0c\u5728 try-with-resources \u8bed\u53e5\u4e2d\u5b9a\u4e49\u7684\u5c40\u90e8\u53d8\u91cf\u6ca1\u6709\u88ab\u4f7f\u7528\u3002<\/div>\n<\/div>\n<h3>switch \u6784\u9020\u4e2d\u7684\u672a\u4f7f\u7528\u6a21\u5f0f\u548c\u6a21\u5f0f\u53d8\u91cf<\/h3>\n<div id=\"crowdin_phrase_33850288\" class=\"crowdin_phrase status_select crowdin_phrase_approved\" title=\"\">\u5047\u8bbe\uff0c\u60a8\u5b9a\u4e49\u4e86\u4e00\u4e2a\u5bc6\u5c01\u63a5\u53e3 <code>GeometricShape<\/code> \u548c\u8bb0\u5f55\u6765\u8868\u793a\u5f62\u72b6\uff0c\u4f8b\u5982 <code>Point<\/code>\u3001<code>Line<\/code>\u3001<code>Triangle<\/code>\u3001<code>Square<\/code>\uff0c\u5982\u4ee5\u4e0b\u4ee3\u7801\u6240\u793a\uff1a<\/div>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"\">\nsealed interface GeometricShape {}\nrecord Point   ( int x,\n                 int y)         implements GeometricShape { }\nrecord Line    ( Point start,\n                 Point end)     implements GeometricShape { }\nrecord Triangle( Point pointA,\n                 Point pointB,\n                 Point PointC)  implements GeometricShape { }\nrecord Square  ( Point pointA,\n                 Point pointB,\n                 Point PointC,\n                 Point pointD)  implements GeometricShape { }<\/pre>\n<div id=\"crowdin_phrase_33850292\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\">\u5047\u8bbe\u60a8\u9700\u8981\u4e00\u4e2a\u63a5\u53d7 <code>GeometricShape<\/code> \u5b9e\u4f8b\u5e76\u8fd4\u56de\u5176\u9762\u79ef\u7684\u65b9\u6cd5\u3002\u7531\u4e8e <code>Point<\/code> \u548c <code>Line<\/code> \u88ab\u89c6\u4e3a\u4e00\u7ef4\u5f62\u72b6\uff0c\u6ca1\u6709\u9762\u79ef\u3002\u4ee5\u4e0b\u662f\u5b9a\u4e49\u6b64\u7c7b\u8ba1\u7b97\u5e76\u8fd4\u56de\u9762\u79ef\u7684\u65b9\u6cd5\u7684\u65b9\u5f0f\u4e4b\u4e00\uff1a<\/div>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"\">\nint calcArea(GeometricShape figure) {\n    return switch (figure) {\n        case Point    (int x, int y)                        -&gt; 0;\n        case Line     (Point a, Point b)                    -&gt; 0;\n        case Triangle (Point a, Point b, Point c)           -&gt; areaTriangle(a, b, c);\n        case Square   (Point a, Point b, Point c, Point d)  -&gt; areaSquare  (a, b, c, d);\n    };\n}<\/pre>\n<div id=\"crowdin_phrase_33850300\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\">\u5728\u524d\u9762\u7684\u793a\u4f8b\u4e2d\uff0cIntelliJ IDEA \u68c0\u6d4b\u5230\u6a21\u5f0f <code>int x<\/code>\u3001<code>int y<\/code>\u3001<code>Point a<\/code> \u548c <code>Point B<\/code>\uff08\u7528\u4e8e case \u6807\u7b7e Line\uff09\u4fdd\u6301\u672a\u4f7f\u7528\u72b6\u6001\u3002\u8fd9\u4e9b\u53ef\u88ab\u66ff\u6362\u4e3a <code>_<\/code>\u3002\u53e6\u5916\uff0c\u7531\u4e8e case Point \u7684\u6240\u6709\u8bb0\u5f55\u7ec4\u4ef6\u90fd\u672a\u4f7f\u7528\uff0c\u53ef\u4ee5\u5c06\u5176\u66ff\u6362\u4e3a <code>Point _<\/code>\u3002\u8fd9\u4e5f\u53ef\u4ee5\u8ba9\u6211\u4eec\u5408\u5e76\u7b2c\u4e00\u4e2a\u548c\u7b2c\u4e8c\u4e2a case \u6807\u7b7e\u3002\u8fd9\u4e9b\u6b65\u9aa4\u90fd\u663e\u793a\u5728\u4ee5\u4e0b gif \u4e2d\uff1a<\/div>\n<figure class=\"wp-block-image\"><img decoding=\"async\" class=\"wp-image-16062\" src=\"https:\/\/blog.jetbrains.com\/wp-content\/uploads\/2024\/03\/unused-pattern-variables1.gif\" alt=\"\" \/><\/figure>\n<div title=\"\">\u00a0<\/div>\n<div id=\"crowdin_phrase_33850312\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\">\u8fd9\u662f\u4fee\u6539\u540e\u7684\u4ee3\u7801\uff1a<\/div>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"\">\nint calcArea(GeometricShape figure) {\n    return switch (figure) {\n        case Point _, Line _                                -&gt; 0;  \n        case Triangle (Point a, Point b, Point c)           -&gt; areaTriangle(a, b, c);\n        case Square   (Point a, Point b, Point c, Point d)  -&gt; areaSquare  (a, b, c, d);\n    };\n}<\/pre>\n<div id=\"crowdin_phrase_33850316\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\">\u5728\u524d\u9762\u7684\u793a\u4f8b\u4e2d\uff0c\u6a21\u5f0f\u53d8\u91cf\u5373\u4f7f\u672a\u4f7f\u7528\uff0c\u4e5f\u4e0d\u80fd\u5220\u9664\u3002\u4ee3\u7801\u5fc5\u987b\u5305\u62ec\u4f20\u9012\u7ed9\u65b9\u6cd5 <code>calcArea()<\/code> \u7684\u5b9e\u4f8b\u7684\u7c7b\u578b\u4e3a <code>Point<\/code> \u548c <code>Line<\/code> \u7684\u60c5\u51b5\uff0c\u4ece\u800c\u4e3a\u5b83\u4eec\u8fd4\u56de 0\u3002<\/div>\n<h3>\u672a\u4f7f\u7528\u7684\u6a21\u5f0f\u6216\u53d8\u91cf\u548c\u5d4c\u5957\u8bb0\u5f55<\/h3>\n<p>\u5bf9\u4e8e\u5177\u6709\u591a\u4e2a\u672a\u4f7f\u7528\u6a21\u5f0f\u6216\u6a21\u5f0f\u53d8\u91cf\u7684\u5d4c\u5957\u8bb0\u5f55\uff0c\u6b64\u529f\u80fd\u4e5f\u975e\u5e38\u65b9\u4fbf\uff0c\u5982\u4ee5\u4e0b\u793a\u4f8b\u4ee3\u7801\u6240\u793a\uff1a<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"\">\nrecord Name       (String fName, String lName) { }\nrecord PhoneNumber(String areaCode, String number) { }\nrecord Country    (String countryCode, String countryName) { }\nrecord Passenger  (Name name,\n                   PhoneNumber phoneNumber,\n                   Country from,\n                   Country destination) { }\n\npublic class GeoMaps {\n    boolean checkFirstNameAndCountryCodeAgain (Object obj) {\n        if (obj instanceof Passenger(Name (String fName, _),\n                                     _,\n                                     _,\n                                     Country (String countryCode, _) )) {\n\n            if (fName != null &amp;&amp; countryCode != null) {\n                return fName.startsWith(&quot;Simo&quot;) &amp;&amp; countryCode.equals(&quot;PRG&quot;);\n            }\n        }\n        return false;\n    }\n}<\/pre>\n<div id=\"crowdin_phrase_33850326\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\">\u5728\u4e0a\u9762\u7684\u4ee3\u7801\u4e2d\uff0c\u7531\u4e8e\u65b9\u6cd5 <code>checkFirstNameAndCountryCodeAgain<\/code> \u4e2d\u7684 if \u6761\u4ef6\u4ec5\u4f7f\u7528\u4e86\u4e24\u4e2a\u6a21\u5f0f\u53d8\u91cf\uff0c\u5176\u4ed6\u53ef\u88ab\u66ff\u6362\u4e3a <code>_<\/code>\u3002\u8fd9\u4e5f\u51cf\u5c11\u4e86\u4ee3\u7801\u4e2d\u7684\u566a\u97f3\u3002<\/div>\n<h3>\u60a8\u8fd8\u53ef\u4ee5\u5728\u54ea\u91cc\u4f7f\u7528\u6b64\u529f\u80fd\uff1f<\/h3>\n<div id=\"crowdin_phrase_33850330\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\">\u9605\u8bfb\u6211\u7684\u8be6\u7ec6\u535a\u6587 <a href=\"https:\/\/blog.jetbrains.com\/idea\/2024\/03\/drop-the-baggage-use-_-for-unnamed-local-variables-and-patterns-in-java-22\/\">Drop the Baggage: Use \u2018_\u2019 for Unnamed Local Variables and Patterns in Java 22<\/a> \u8be6\u7ec6\u4e86\u89e3\u53ef\u4ee5\u4f7f\u7528\u6b64\u529f\u80fd\u7684\u5176\u4ed6\u7528\u4f8b\uff1a<\/div>\n<div title=\"\">\u00a0<\/div>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li>\n<div id=\"crowdin_phrase_33850334\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\"><a href=\"https:\/\/blog.jetbrains.com\/idea\/2024\/03\/drop-the-baggage-use-_-for-unnamed-local-variables-and-patterns-in-java-22\/#3.-requirements-change,-but-you-need-side-effects-of-constructs-like-an-enhanced-for-loop\">\u8981\u6c42\u53d1\u751f\u53d8\u5316\uff0c\u4f46\u60a8\u9700\u8981\u6784\u9020\u7684\u526f\u4f5c\u7528\uff0c\u4f8b\u5982\u589e\u5f3a\u7684 for \u5faa\u73af<\/a><\/div>\n<\/li>\n<li>\n<div id=\"crowdin_phrase_33850338\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\"><a href=\"https:\/\/blog.jetbrains.com\/idea\/2024\/03\/drop-the-baggage-use-_-for-unnamed-local-variables-and-patterns-in-java-22\/#4.-unused-parameters-in-exception-handlers;-whose-signature-can\u2019t-be-modified\">\u5f02\u5e38\u5904\u7406\u7a0b\u5e8f\u4e2d\u672a\u4f7f\u7528\u7684\u5f62\u53c2\uff1b\u5176\u7b7e\u540d\u65e0\u6cd5\u4fee\u6539<\/a><\/div>\n<\/li>\n<li>\n<div id=\"crowdin_phrase_33850342\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\"><a href=\"https:\/\/blog.jetbrains.com\/idea\/2024\/03\/drop-the-baggage-use-_-for-unnamed-local-variables-and-patterns-in-java-22\/#5.-unused-auto-closeable-resources-in-try-with-resources-statements\">try-with-resources \u8bed\u53e5\u4e2d\u672a\u4f7f\u7528\u7684\u53ef\u81ea\u52a8\u5173\u95ed\u8d44\u6e90<\/a><\/div>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<div title=\"\">\u00a0<\/div>\n<div id=\"crowdin_phrase_33850344\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\">\u5982\u679c\u6ca1\u6709\u610f\u8bc6\u5230\u672a\u4f7f\u7528\u7684\u53d8\u91cf\u6216\u6a21\u5f0f\u662f\u5426\u6709\u4ee3\u7801\u5f02\u5473\uff0c\u5219\u4e0d\u5efa\u8bae\u4f7f\u7528\u6b64\u529f\u80fd\u3002\u6211\u4f7f\u7528\u8fd9\u4e9b\u793a\u4f8b\u8868\u660e\uff0c\u6709\u65f6\u91cd\u6784\u4ee3\u7801\u6446\u8131\u672a\u4f7f\u7528\u7684\u53d8\u91cf\u53ef\u80fd\u4f18\u4e8e\u4ec5\u4ec5\u7528\u4e0b\u5212\u7ebf <code>_<\/code> \u66ff\u6362\u3002<\/div>\n<div title=\"\">\u00a0<\/div>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li>\n<div id=\"crowdin_phrase_33850350\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\"><a href=\"https:\/\/blog.jetbrains.com\/idea\/2024\/03\/drop-the-baggage-use-_-for-unnamed-local-variables-and-patterns-in-java-22\/#1.-unused-lambda-parameter\">\u672a\u4f7f\u7528\u7684 lambda \u5f62\u53c2<\/a><\/div>\n<\/li>\n<li>\n<div id=\"crowdin_phrase_33850354\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\"><a href=\"https:\/\/blog.jetbrains.com\/idea\/2024\/03\/drop-the-baggage-use-_-for-unnamed-local-variables-and-patterns-in-java-22\/#2.-methods-with-multiple-responsibilities\">\u5177\u6709\u591a\u91cd\u804c\u8d23\u7684\u65b9\u6cd5<\/a><\/div>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2>\u9884\u89c8\u529f\u80fd<\/h2>\n<p><!-- \/wp:heading --><\/p>\n<p><!-- wp:paragraph --><\/p>\n<div id=\"crowdin_phrase_33850358\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\">\u201c\u5b57\u7b26\u4e32\u6a21\u677f\u201d\u3001\u201c\u9690\u5f0f\u58f0\u660e\u7684\u7c7b\u4e0e\u5b9e\u4f8b main \u65b9\u6cd5\u201d\u548c\u201csuper() \u4e4b\u524d\u7684\u8bed\u53e5\u201d\u5728 Java 22 \u4e2d\u662f\u9884\u89c8\u8bed\u8a00\u529f\u80fd\u3002Java \u7684\u65b0\u53d1\u5e03\u5468\u671f\u4e3a\u516d\u4e2a\u6708\uff0c\u65b0\u8bed\u8a00\u529f\u80fd\u4f5c\u4e3a\u9884\u89c8\u529f\u80fd\u53d1\u5e03\u3002\u5b83\u4eec\u53ef\u80fd\u4f1a\u5728\u540e\u7eed Java \u7248\u672c\u7684\u7b2c\u4e8c\u4e2a\u6216\u5176\u4ed6\u9884\u89c8\u7248\u4e2d\u91cd\u65b0\u5f15\u5165\uff0c\u53ef\u80fd\u6709\u4e5f\u53ef\u80fd\u6ca1\u6709\u66f4\u6539\u3002\u8db3\u591f\u7a33\u5b9a\u540e\uff0c\u5b83\u4eec\u5c31\u4f1a\u4f5c\u4e3a\u6807\u51c6\u8bed\u8a00\u529f\u80fd\u6dfb\u52a0\u5230 Java \u4e2d\u3002<\/div>\n<div title=\"\">\u00a0<\/div>\n<div id=\"crowdin_phrase_33850366\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\">\u9884\u89c8\u8bed\u8a00\u529f\u80fd\u662f\u5b8c\u6574\u7684\u4f46\u4e0d\u662f\u6c38\u4e45\u7684\uff0c\u8fd9\u5b9e\u9645\u4e0a\u610f\u5473\u7740\u529f\u80fd\u5df2\u7ecf\u51c6\u5907\u597d\u4f9b\u5f00\u53d1\u8005\u4f7f\u7528\uff0c\u53ea\u662f\u66f4\u7ec6\u81f4\u7684\u7ec6\u8282\u53ef\u80fd\u4f1a\u5728\u672a\u6765\u7684 Java \u7248\u672c\u4e2d\u6839\u636e\u5f00\u53d1\u8005\u53cd\u9988\u53d1\u751f\u53d8\u5316\u3002\u4e0e API \u4e0d\u540c\uff0c\u8bed\u8a00\u529f\u80fd\u5728\u672a\u6765\u4e0d\u80fd\u88ab\u5f03\u7528\u3002\u56e0\u6b64\uff0c\u5982\u679c\u60a8\u5bf9\u9884\u89c8\u8bed\u8a00\u529f\u80fd\u6709\u4efb\u4f55\u53cd\u9988\uff0c\u8bf7\u968f\u65f6\u5728 JDK \u90ae\u4ef6\u540d\u5355\uff08\u9700\u8981\u514d\u8d39\u6ce8\u518c\uff09\u4e2d\u5206\u4eab\u3002<\/div>\n<div title=\"\">\u00a0<\/div>\n<div id=\"crowdin_phrase_33850372\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\">\u7531\u4e8e\u8fd9\u4e9b\u529f\u80fd\u7684\u8fd0\u4f5c\u65b9\u5f0f\uff0cIntelliJ IDEA \u4ec5\u652f\u6301\u5f53\u524d JDK \u7684\u9884\u89c8\u529f\u80fd\u3002\u9884\u89c8\u8bed\u8a00\u529f\u80fd\u5728\u4e0d\u540c Java \u7248\u672c\u95f4\u53ef\u80fd\u53d1\u751f\u53d8\u5316\uff0c\u76f4\u5230\u5176\u88ab\u79fb\u9664\u6216\u6dfb\u52a0\u4e3a\u6807\u51c6\u8bed\u8a00\u529f\u80fd\u3002\u4f7f\u7528\u65e7\u7248\u672c Java SE Platform \u4e2d\u7684\u9884\u89c8\u8bed\u8a00\u529f\u80fd\u7684\u4ee3\u7801\u53ef\u80fd\u65e0\u6cd5\u5728\u65b0\u7248\u672c\u4e0a\u7f16\u8bd1\u6216\u8fd0\u884c\u3002<\/div>\n<p><!-- \/wp:paragraph --><\/p>\n<p><!-- wp:paragraph --><\/p>\n<p><!-- \/wp:paragraph --><\/p>\n<p><!-- wp:paragraph --><\/p>\n<h2>\u603b\u7ed3<\/h2>\n<div id=\"crowdin_phrase_33850380\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\">\u5728\u8fd9\u7bc7\u535a\u6587\u4e2d\uff0c\u6211\u4ecb\u7ecd\u4e86\u56db\u4e2a Java 22 \u529f\u80fd\uff1a<a href=\"https:\/\/openjdk.org\/jeps\/459\" target=\"_blank\" rel=\"noopener\">\u5b57\u7b26\u4e32\u6a21\u677f<\/a>\u3001<a href=\"https:\/\/openjdk.org\/jeps\/463\" target=\"_blank\" rel=\"noopener\">\u9690\u5f0f\u58f0\u660e\u7684\u7c7b\u4e0e\u5b9e\u4f8b main \u65b9\u6cd5<\/a>\u3001<a href=\"https:\/\/openjdk.org\/jeps\/447\" target=\"_blank\" rel=\"noopener\">super() \u4e4b\u524d\u7684\u8bed\u53e5<\/a>\uff0c\u4ee5\u53ca<a href=\"https:\/\/openjdk.org\/jeps\/456\" target=\"_blank\" rel=\"noopener\">\u672a\u547d\u540d\u53d8\u91cf\u548c\u6a21\u5f0f<\/a>\u3002<\/div>\n<div title=\"\">\u00a0<\/div>\n<div id=\"crowdin_phrase_33850382\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\">\u5b57\u7b26\u4e32\u6a21\u677f\u5f88\u597d\u5730\u6269\u5145\u4e86 Java\u3002\u9664\u4e86\u5e2e\u52a9\u5f00\u53d1\u8005\u4f7f\u7528\u7ec4\u5408\u5b57\u7b26\u4e32\u5e38\u91cf\u548c\u53d8\u91cf\u7684\u5b57\u7b26\u4e32\u4e4b\u5916\uff0c\u5b83\u4eec\u8fd8\u63d0\u4f9b\u4e86\u989d\u5916\u4e00\u5c42\u5b89\u5168\u4fdd\u969c\u3002\u53ef\u4ee5\u8f7b\u677e\u521b\u5efa\u81ea\u5b9a\u4e49\u5b57\u7b26\u4e32\u6a21\u677f\u6765\u5b8c\u6210\u591a\u9879\u4efb\u52a1\uff0c\u4f8b\u5982\u7834\u8bd1\u5b57\u6bcd\u7ec4\u5408\uff0c\u5c06\u5176\u5ffd\u7565\u6216\u66ff\u6362\u4ee5\u589e\u52a0\u5b89\u5168\u6027\u3002<\/div>\n<div title=\"\">\u00a0<\/div>\n<div id=\"crowdin_phrase_33850388\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\">Java \u8bed\u8a00\u8bbe\u8ba1\u5e08\u5f15\u5165\u9690\u5f0f\u58f0\u660e\u7684\u7c7b\u4e0e\u5b9e\u4f8b main \u65b9\u6cd5\uff0c\u51cf\u5c11\u4e86 Java \u5b66\u751f\u7f16\u5199\u7b2c\u4e00\u4e2a HelloWorld \u4ee3\u7801\u6240\u9700\u7684\u6b65\u9aa4\u3002\u65b0\u5b66\u751f\u53ef\u4ee5\u4ece\u6700\u57fa\u672c\u7684 main() \u65b9\u6cd5\uff08\u4f8b\u5982 void main()\uff09\u5f00\u59cb\uff0c\u5e76\u901a\u8fc7\u5e8f\u5217\u3001\u9009\u62e9\u548c\u8fed\u4ee3\u7b49\u57fa\u7840\u77e5\u8bc6\u6765\u63d0\u5347\u6280\u80fd\uff0c\u5efa\u7acb\u5f3a\u5927\u7684\u7f16\u7a0b\u57fa\u7840\u3002<\/div>\n<div title=\"\">\u00a0<\/div>\n<div id=\"crowdin_phrase_33850392\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\">\u5728 Java 22 \u4e2d\uff0c\u201csuper() \u4e4b\u524d\u7684\u8bed\u53e5\u201d\u529f\u80fd\u5141\u8bb8\u5728\u6d3e\u751f\u7c7b\u6784\u9020\u51fd\u6570\u4e2d\u8c03\u7528 super() \u4e4b\u524d\u6216\u8005\u5728\u8bb0\u5f55\u6216\u679a\u4e3e\u4e2d\u8c03\u7528 this() \u4e4b\u524d\u6267\u884c\u4ee3\u7801\uff0c\u4ee5\u4fbf\u60a8\u53ef\u4ee5\u6839\u636e\u9700\u8981\u9a8c\u8bc1\u65b9\u6cd5\u5f62\u53c2\u6216\u8f6c\u6362\u503c\u3002\u8fd9\u53ef\u4ee5\u907f\u514d\u521b\u5efa static \u65b9\u6cd5\u4e4b\u7c7b\u7684\u53d8\u901a\u65b9\u6cd5\uff0c\u5e76\u4f7f\u4ee3\u7801\u66f4\u6613\u9605\u8bfb\u548c\u7406\u89e3\u3002\u6b64\u529f\u80fd\u4e0d\u4f1a\u6539\u53d8\u6784\u9020\u51fd\u6570\u7684\u64cd\u4f5c\u65b9\u5f0f\uff0cJVM \u6307\u4ee4\u4fdd\u6301\u4e0d\u53d8\u3002<\/div>\n<div title=\"\">\u00a0<\/div>\n<div id=\"crowdin_phrase_33850398\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\">\u672a\u547d\u540d\u53d8\u91cf\u662f\u4ee3\u7801\u6784\u9020\u7684\u5c40\u90e8\u53d8\u91cf\uff0c\u5b83\u4eec\u6ca1\u6709\u540d\u79f0\uff0c\u5e76\u4f7f\u7528\u4e0b\u5212\u7ebf <code>_<\/code> \u8868\u793a\u3002\u5b83\u4eec\u4e0d\u80fd\u4f20\u9012\u5230\u65b9\u6cd5\uff0c\u4e5f\u4e0d\u80fd\u5728\u8868\u8fbe\u5f0f\u4e2d\u4f7f\u7528\u3002\u5c06\u4ee3\u7801\u5e93\u4e2d\u672a\u4f7f\u7528\u7684\u5c40\u90e8\u53d8\u91cf\u66ff\u6362\u4e3a <code>_<\/code> \u540e\uff0c\u53ef\u4ee5\u975e\u5e38\u6e05\u695a\u5730\u4f20\u8fbe\u5176\u610f\u56fe\u3002\u5b83\u6e05\u6670\u5730\u5411\u4efb\u4f55\u9605\u8bfb\u4ee3\u7801\u6bb5\u7684\u4eba\u8868\u660e\u53d8\u91cf\u672a\u5728\u5176\u4ed6\u4f4d\u7f6e\u4f7f\u7528\u3002\u76ee\u524d\u4e3a\u6b62\uff0c\u8fd9\u79cd\u610f\u56fe\u53ea\u80fd\u901a\u8fc7\u6ce8\u91ca\u4f20\u8fbe\uff0c\u7136\u800c\uff0c\u5e76\u4e0d\u662f\u6240\u6709\u5f00\u53d1\u8005\u90fd\u4f1a\u5199\u6ce8\u91ca\u3002<\/div>\n<div title=\"\">\u00a0<\/div>\n<div id=\"crowdin_phrase_33850408\" class=\"crowdin_phrase crowdin_phrase_approved\" title=\"\">\u5feb\u4e50\u7f16\u7a0b\uff01<\/div>\n<div title=\"\">\u00a0<\/div>\n<div title=\"\">\u00a0<\/div>\n<div title=\"\">\u00a0<\/div>\n<div title=\"\">\u672c\u535a\u6587\u82f1\u6587\u539f\u4f5c\u8005\uff1a<\/div>\n<p><!-- wp:acf\/author-block {\"name\":\"acf\/author-block\",\"data\":{\"author\":921,\"_author\":\"field_60c2fd41dc714\"},\"align\":\"full\",\"mode\":\"auto\"} \/--><\/p>\n<p><!-- wp:acf\/author-block {\"name\":\"acf\/author-block\",\"data\":{\"author\":921,\"_author\":\"field_60c2fd41dc714\"},\"align\":\"full\",\"mode\":\"auto\"} \/--><\/p>\n\n<!-- wp:acf\/author-block {\"name\":\"acf\/author-block\",\"data\":{\"author\":921,\"_author\":\"field_60c2fd41dc714\"},\"align\":\"full\",\"mode\":\"auto\"} 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