{"id":674742,"date":"2026-01-16T06:56:24","date_gmt":"2026-01-16T05:56:24","guid":{"rendered":"https:\/\/blog.jetbrains.com\/?post_type=kotlin&#038;p=674742"},"modified":"2026-01-19T02:56:59","modified_gmt":"2026-01-19T01:56:59","slug":"scaling-kotlin-adoption-across-your-organization","status":"publish","type":"kotlin","link":"https:\/\/blog.jetbrains.com\/ja\/kotlin\/2026\/01\/scaling-kotlin-adoption-across-your-organization\/","title":{"rendered":"Kotlin \u306e\u5c0e\u5165\u3092\u7d44\u7e54\u5168\u4f53\u306b\u62e1\u5927\u3059\u308b"},"content":{"rendered":"<p><em><a href=\"https:\/\/www.linkedin.com\/in\/urs-peter-70a2882\/\" target=\"_blank\" rel=\"noreferrer noopener\" data-type=\"link\" data-id=\"https:\/\/bit.ly\/urs-peter-linked-in\">Urs Peter<\/a>\uff08\u30b7\u30cb\u30a2\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u30a8\u30f3\u30b8\u30cb\u30a2\u3001JetBrains \u8a8d\u5b9a Kotlin \u30c8\u30ec\u30fc\u30ca\u30fc\uff09\u306b\u3088\u308b\u30b2\u30b9\u30c8\u6295\u7a3f\u3067\u3059\u3002Urs \u306f\u3001\u3088\u308a\u4f53\u7cfb\u7684\u306a Kotlin \u30b9\u30ad\u30eb\u306e\u69cb\u7bc9\u3092\u5e0c\u671b\u3059\u308b\u958b\u767a\u8005\u3092\u5bfe\u8c61\u3068\u3059\u308b <\/em><a href=\"https:\/\/academy.xebia.com\/upskilling\/kotlin-academy\/\" target=\"_blank\" rel=\"noreferrer noopener\"><em>Kotlin Upskill Program<\/em><\/a>\uff08Kotlin \u30b9\u30ad\u30eb\u30a2\u30c3\u30d7\u30d7\u30ed\u30b0\u30e9\u30e0\uff09\u3082 <em>Xebia Academy \u3067<\/em>\u958b\u8b1b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p><em>\u3053\u306e\u8a18\u4e8b\u306f\u3001\u5b9f\u969b\u306e\u30c1\u30fc\u30e0\u3067\u3042\u308b\u958b\u767a\u8005\u306e\u597d\u5947\u5fc3\u3092\u304d\u3063\u304b\u3051\u306b\u4f1a\u793e\u5168\u4f53\u304c\u5909\u9769\u3059\u308b\u307e\u3067\u306e Kotlin \u306e\u5c0e\u5165\u7d4c\u7def\u3092\u8ffd\u3063\u305f\u300c<\/em><strong><em>Java \u4e3b\u4f53\u306e\u74b0\u5883\u3067 Kotlin \u306e\u5c0e\u5165\u3092\u6210\u529f\u3055\u305b\u308b\u305f\u3081\u306e\u7a76\u6975\u30ac\u30a4\u30c9<\/em><\/strong><em>\u300d\u9023\u8f09\u8a18\u4e8b\u306e\u7b2c 5 \u56de\u3067\u3059\u3002<\/em><\/p>\n<p><strong>\u3053\u306e\u9023\u8f09\u306b\u542b\u307e\u308c\u308b\u5404\u56de\u306e\u30bf\u30a4\u30c8\u30eb:<\/strong><\/p>\n<ol>\n<li><a href=\"https:\/\/blog.jetbrains.com\/ja\/kotlin\/2025\/12\/getting-started-with-kotlin-for-java-developers\/\" target=\"_blank\" rel=\"noreferrer noopener\">Java \u958b\u767a\u8005\u5411\u3051 Kotlin \u5165\u9580\u30ac\u30a4\u30c9<\/a><\/li>\n<li><a href=\"https:\/\/blog.jetbrains.com\/ja\/kotlin\/2026\/01\/evaluating-kotlin-in-real-projects\/\" target=\"_blank\" rel=\"noreferrer noopener\" data-type=\"link\" data-id=\"https:\/\/blog.jetbrains.com\/kotlin\/2025\/10\/evaluating-kotlin-in-real-projects\/\">\u5b9f\u969b\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306b\u304a\u3051\u308b Kotlin \u306e\u8a55\u4fa1\u624b\u6cd5<\/a><\/li>\n<li><a href=\"https:\/\/blog.jetbrains.com\/ja\/kotlin\/2026\/01\/growing-kotlin-adoption-in-your-company\/\" target=\"_blank\" rel=\"noreferrer noopener\">\u4f01\u696d\u306b\u304a\u3051\u308b Kotlin \u5c0e\u5165\u30fb\u6d3b\u7528\u306e\u63a8\u9032<\/a><\/li>\n<li><a href=\"https:\/\/blog.jetbrains.com\/ja\/kotlin\/2026\/01\/helping-decision-makers-say-yes-to-kotlin\/\" target=\"_blank\" rel=\"noreferrer noopener\" data-type=\"link\" data-id=\"https:\/\/blog.jetbrains.com\/kotlin\/2025\/11\/helping-decision-makers-say-yes-to-kotlin\/\">\u610f\u601d\u6c7a\u5b9a\u8005\u306e\u300cKotlin \u63a1\u7528\u300d\u3092\u5f8c\u62bc\u3057\u3059\u308b\u305f\u3081\u306b<\/a><\/li>\n<li>Kotlin \u306e\u5c0e\u5165\u3092\u7d44\u7e54\u5168\u4f53\u306b\u62e1\u5927\u3059\u308b<\/li>\n<\/ol>\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n<h2 class=\"wp-block-heading\"><strong>\u5927\u898f\u6a21\u306a Kotlin \u306e\u5c0e\u5165\u3092\u5b9f\u73fe\u3059\u308b\u6210\u529f\u8981\u56e0<\/strong><\/h2>\n<p>Kotlin \u306b\u5bfe\u3059\u308b\u958b\u767a\u8005\u306e\u8cdb\u540c\u3068\u7d4c\u55b6\u9663\u306e\u652f\u6301\u3092\u5f97\u308b\u3053\u3068\u306f\u91cd\u8981\u306a\u7bc0\u76ee\u3067\u306f\u3042\u308a\u307e\u3059\u304c\u3001\u30b4\u30fc\u30eb\u306b\u306f\u306a\u308a\u307e\u305b\u3093\u3002\u672c\u5f53\u306e\u6311\u6226\u304c\u59cb\u307e\u308b\u306e\u306f\u3001Kotlin \u3068\u306e\u5171\u5b58\u304b Kotlin \u3078\u306e\u79fb\u884c\u304c\u5fc5\u8981\u306a\u65e2\u5b58\u306e Java \u30b3\u30fc\u30c9\u30d9\u30fc\u30b9\u306b\u5411\u304d\u5408\u3063\u3066\u304b\u3089\u3067\u3059\u3002\u3053\u306e\u30cf\u30a4\u30d6\u30ea\u30c3\u30c9\u74b0\u5883\u3067\u52b9\u679c\u7684\u306b\u8a08\u753b\u3092\u9032\u3081\u308b\u306b\u306f\u3069\u3046\u3059\u308c\u3070\u3088\u3044\u306e\u3067\u3057\u3087\u3046\u304b\u3002<\/p>\n<p>\u65e2\u5b58\u306e\u30b3\u30fc\u30c9\u30d9\u30fc\u30b9\u3092\u7ba1\u7406\u3059\u308b\u306b\u306f\u3001\u7d44\u7e54\u306e\u76ee\u6a19\u3084\u73fe\u5b9f\u7684\u306a\u904b\u7528\u306b\u5408\u3063\u305f\u6226\u7565\u3092\u7df4\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002\u4ee5\u4e0b\u3067\u306f\u5b9f\u969b\u306b\u6210\u529f\u3057\u305f\u5b9f\u7e3e\u306e\u3042\u308b\u624b\u6cd5\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n<h2 class=\"wp-block-heading\"><strong>\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u30e9\u30a4\u30d5\u30b5\u30a4\u30af\u30eb\u306b\u5fdc\u3058\u305f\u6226\u7565<\/strong><\/h2>\n<p>\u5404\u7a2e\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u306f\u305d\u306e\u30e9\u30a4\u30d5\u30b5\u30a4\u30af\u30eb\u306e\u6bb5\u968e\u306b\u5fdc\u3058\u305f\u7570\u306a\u308b\u624b\u6cd5\u304c\u5fc5\u8981\u3067\u3059\u3002\u4ee5\u4e0b\u306e 3 \u3064\u306e\u7570\u306a\u308b\u30ab\u30c6\u30b4\u30ea\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<h3 class=\"wp-block-heading\"><strong>\u30b5\u30dd\u30fc\u30c8\u7d42\u4e86\u5bfe\u8c61\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3<\/strong><\/h3>\n<p><strong>\u6226\u7565: \u4f55\u3082\u3057\u306a\u3044\u3002<\/strong><\/p>\n<p>\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u30b5\u30dd\u30fc\u30c8\u7d42\u4e86\u304c\u4e88\u5b9a\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u306f\u3001\u79fb\u884c\u306e\u305f\u3081\u306b\u3084\u308b\u3079\u304d\u3053\u3068\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u305d\u306e\u3088\u3046\u306a\u30b7\u30b9\u30c6\u30e0\u306f Java \u306e\u307e\u307e\u306b\u3057\u3001\u6700\u3082\u91cd\u8981\u306a\u90e8\u5206\u306b\u6ce8\u529b\u3057\u307e\u3057\u3087\u3046\u3002\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u5bff\u547d\u304c\u6b8b\u3063\u3066\u3044\u308b\u3053\u3068\u3092\u7406\u7531\u306b\u79fb\u884c\u30b3\u30b9\u30c8\u304c\u6b63\u5f53\u5316\u3055\u308c\u308b\u3053\u3068\u306f\u7d76\u5bfe\u306b\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<h3 class=\"wp-block-heading\"><strong>\u65b0\u3057\u3044\u30b7\u30b9\u30c6\u30e0<\/strong><\/h3>\n<p><strong>\u6226\u7565: Kotlin \u3092\u30c7\u30d5\u30a9\u30eb\u30c8\u3068\u3059\u308b\u3002<\/strong><\/p>\n<p>Kotlin \u306e\u5c0e\u5165\u304c\u5b8c\u4e86\u3057\u305f\u7d44\u7e54\u3067\u306f\u3001\u30b0\u30ea\u30fc\u30f3\u30d5\u30a3\u30fc\u30eb\u30c9\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306f\u5fc5\u7136\u7684\u306b Kotlin \u3067\u958b\u59cb\u3055\u308c\u307e\u3059\u3002\u5c0e\u5165\u30d7\u30ed\u30bb\u30b9\u304c\u9032\u884c\u4e2d\u306e\u5834\u5408\u3001\u591a\u304f\u306e\u5834\u5408\u306f Java \u3068 Kotlin \u306e\u3069\u3061\u3089\u304b\u3092\u9078\u629e\u3067\u304d\u307e\u3059\u3002\u8ce2\u304f\u9078\u3073\u307e\u3057\u3087\u3046 ;-)<\/p>\n<h3 class=\"wp-block-heading\"><strong>\u7a3c\u50cd\u4e2d\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3<\/strong><\/h3>\n<p><strong>\u6226\u7565: \u73fe\u5b9f\u7684\u306a\u6a5f\u80fd\u91cd\u8996\u306e\u79fb\u884c\u3092\u884c\u3046\u3002<\/strong><\/p>\n<p>\u7a3c\u50cd\u4e2d\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u3064\u3044\u3066\u306f\u5165\u5ff5\u306a\u8003\u616e\u304c\u5fc5\u8981\u3067\u3059\u3002\u66f8\u304d\u76f4\u3059\u3053\u3068\u81ea\u4f53\u3092\u76ee\u7684\u306b\u66f8\u304d\u76f4\u3059\u3053\u3068\u3092\u30d7\u30ed\u30c0\u30af\u30c8\u30aa\u30fc\u30ca\u30fc\u306b\u8a34\u6c42\u3059\u308b\u306e\u306f\u304b\u306a\u308a\u306e\u5927\u4ed5\u4e8b\u3067\u3059\u3002\u4ee3\u308f\u308a\u306b\u3001\u79fb\u884c\u4f5c\u696d\u3068\u65b0\u6a5f\u80fd\u306e\u958b\u767a\u3092\u7d44\u307f\u5408\u308f\u305b\u308b\u3088\u3046\u306b\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u3053\u306e\u3084\u308a\u65b9\u306a\u3089\u3001\u5177\u4f53\u7684\u306a\u30d3\u30b8\u30cd\u30b9\u4e0a\u306e\u4fa1\u5024\u3092\u63d0\u4f9b\u3057\u306a\u304c\u3089\u30b3\u30fc\u30c9\u30d9\u30fc\u30b9\u3092\u30e2\u30c0\u30f3\u5316\u3067\u304d\u307e\u3059\u3002\u300c<a href=\"https:\/\/docs.google.com\/document\/d\/1CBnxrE1KB_YOF_su8bVRJpGDD5G2Jo870pjSwZb5yaQ\/edit?tab=t.0#heading=h.wzs8ids1wb0d\" target=\"_blank\" rel=\"noreferrer noopener\"><em>\u65e2\u5b58\u306e Java \u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u62e1\u5f35 \/ \u5909\u63db\u3059\u308b<\/em><\/a>\u300d\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u3059\u3067\u306b\u7570\u306a\u308b\u89d2\u5ea6\u306e\u53d6\u308a\u7d44\u307f\u3092\u8aac\u660e\u3057\u307e\u3057\u305f\u3002<\/p>\n<h2 class=\"wp-block-heading\"><strong>Java \u304b\u3089 Kotlin \u3078\u306e\u5909\u63db\u624b\u6cd5<\/strong><\/h2>\n<p>Java \u304b\u3089 Kotlin \u3078\u306e\u5909\u63db\u624b\u6cd5\u306b\u306f\u3044\u304f\u3064\u304b\u306e\u9078\u629e\u80a2\u304c\u3042\u308a\u3001\u305d\u308c\u305e\u308c\u306b\u660e\u78ba\u306a\u59a5\u5354\u70b9\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p><strong>1. \u5b8c\u5168\u306a\u66f8\u304d\u76f4\u3057<\/strong><\/p>\n<p><strong>\u6700\u9069\u306a\u9069\u7528\u5bfe\u8c61:<\/strong> \u5c0f\u898f\u6a21\u306a\u30b3\u30fc\u30c9\u30d9\u30fc\u30b9\u00a0<\/p>\n<p><strong>\u8ab2\u984c:<\/strong> \u5927\u898f\u6a21\u306a\u30b7\u30b9\u30c6\u30e0\u3067\u306f\u6642\u9593\u304c\u304b\u304b\u308b<\/p>\n<p>\u30b3\u30fc\u30c9\u30d9\u30fc\u30b9\u3092\u30bc\u30ed\u304b\u3089\u66f8\u304d\u76f4\u3059\u3068\u3001\u6700\u3082\u30af\u30ea\u30fc\u30f3\u3067\u6163\u7528\u7684\u306a Kotlin \u30b3\u30fc\u30c9\u3092\u5f97\u3089\u308c\u307e\u3059\u3002\u3053\u306e\u624b\u6cd5\u306f\u30de\u30a4\u30af\u30ed\u30b5\u30fc\u30d3\u30b9\u306a\u3069\u306e\u5c0f\u898f\u6a21\u306a\u30b3\u30fc\u30c9\u30d9\u30fc\u30b9\u306b\u6700\u9069\u3067\u3059\u3002\u5927\u898f\u6a21\u306a\u30b3\u30fc\u30c9\u30d9\u30fc\u30b9\u306e\u5834\u5408\u3001\u3053\u306e\u624b\u6cd5\u306f\u6982\u3057\u3066\u6cd5\u5916\u306a\u8cbb\u7528\u304c\u304b\u304b\u308b\u50be\u5411\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<h3 class=\"wp-block-heading\"><strong>2. IDE \u306b\u3088\u308b\u81ea\u52d5\u5909\u63db\u3068\u624b\u76f4\u3057<\/strong><\/h3>\n<p><strong>\u6700\u9069\u306a\u9069\u7528\u5bfe\u8c61:<\/strong> \u30ea\u30d5\u30a1\u30af\u30bf\u30ea\u30f3\u30b0\u5c02\u7528\u306e\u6642\u9593\u3092\u5272\u308a\u5f53\u3066\u3089\u308c\u308b\u4e2d\u898f\u6a21\u306a\u30b3\u30fc\u30c9\u30d9\u30fc\u30b9<\/p>\n<p><strong>\u8ab2\u984c:<\/strong> \u624b\u52d5\u8abf\u6574\u304c\u5fc5\u9808\u00a0<\/p>\n<p>IntelliJ IDEA \u306e <em>Convert Java to Kotlin<\/em>\uff08Java \u304b\u3089 Kotlin \u306b\u5909\u63db\uff09\u6a5f\u80fd\u3067\u306f\u3001\u6163\u7528\u7684\u3068\u306f\u7a0b\u9060\u3044\u9010\u8a9e\u7684\u306a\u5909\u63db\u304c\u884c\u308f\u308c\u307e\u3059\u3002\u4ee5\u4e0b\u306e\u4f8b\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>\u4f8b 1:\u00a0<\/p>\n<p><strong>Java<\/strong><\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"java\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">record Developer(\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0String name,\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0List languages\n) {}<\/pre>\n<p><strong>\u751f\u306e\u81ea\u52d5\u5909\u63db\u7d50\u679c:<\/strong><\/p>\n<p><strong>Kotlin<\/strong><\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"kotlin\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">@JvmRecord\ndata class Developer(\n\u00a0\u00a0\u00a0val name: String?,\n\u00a0\u00a0\u00a0val languages: MutableList?\n)<\/pre>\n<p>\u3053\u306e\u5909\u63db\u306b\u306f\u4ee5\u4e0b\u306e\u3044\u304f\u3064\u304b\u306e\u554f\u984c\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<ul>\n<li>\u3059\u3079\u3066\u304c null \u8a31\u5bb9\u306b\u306a\u308b\uff08\u904e\u5ea6\u306b\u9632\u5fa1\u7684\uff09\u3002<\/li>\n<li>Java \u306e\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u304c Kotlin \u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u306e\u8aad\u307f\u53d6\u308a\u5c02\u7528\u30ea\u30b9\u30c8\u3067\u306f\u306a\u304f\u3001<code>MutableList<\/code> \u306b\u306a\u308b\u3002<\/li>\n<\/ul>\n<p><strong>jspecify \u306e\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u3092\u4f7f\u7528\u3057\u305f\u5909\u63db\u306e\u6539\u5584:<\/strong><\/p>\n<p>\u5e78\u3044\u3001Java \u306e\u3059\u3079\u3066\u306e\u578b\u3092 Kotlin \u306e null \u8a31\u5bb9\u578b\u306b\u5909\u63db\u3059\u308b\u5834\u5408\u3001@NonNull\/@Nullable \u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u3092\u4f7f\u7528\u3057\u305f\u89e3\u6c7a\u7b56\u304c\u3042\u308a\u307e\u3059\u3002\u3055\u307e\u3056\u307e\u306a\u89e3\u6c7a\u7b56\u304c\u3042\u308a\u307e\u3059\u304c\u3001\u6700\u65b0\u306e\u89e3\u6c7a\u7b56\u306f <a href=\"https:\/\/jspecify.dev\/\" target=\"_blank\" rel=\"noreferrer noopener\">jspecify<\/a> \u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3059\uff08\u6700\u8fd1\u306b\u306a\u3063\u3066 Spring \u3067\u3082\u6b63\u5f0f\u306b\u30b5\u30dd\u30fc\u30c8\u3055\u308c\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\uff09\u3002<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"kotlin\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\u00a0\u00a0\u00a0org.jspecify\n\u00a0\u00a0\u00a0jspecify\n\u00a0\u00a0\u00a01.0.0\n\n\nimplementation(\"org.jspecify:jspecify:1.0.0\")<\/pre>\n<p>jspecify \u3092\u4f7f\u7528\u3059\u308b\u3068\u3001Java \u30b3\u30fc\u30c9\u306b @Nullable \u304a\u3088\u3073 @NonNull \u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u3092\u4ed8\u4e0e\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u4f8b 2:\u00a0<\/p>\n<p><strong>Java<\/strong><\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"java\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">import org.jspecify.annotations.NonNull;\nimport org.jspecify.annotations.Nullable;\n\nrecord Developer(\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0@NonNull String name,\u00a0\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0@NonNull List languages,\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0@Nullable String email\n) {}<\/pre>\n<p>\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u81ea\u52d5\u5909\u63db\u306e\u7d50\u679c\u304c\u5927\u5e45\u306b\u6700\u9069\u5316\u3055\u308c\u307e\u3059\u3002<\/p>\n<p><strong>Kotlin<\/strong><\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"kotlin\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">@JvmRecord\ndata class Developer(\n\u00a0\u00a0\u00a0\/\/\ud83d\ude03 non-null as requested\n\u00a0\u00a0\u00a0val name: String,\u00a0\n\u00a0\u00a0\u00a0\/\/\ud83d\ude03 both, collection and type are non-null\n\u00a0 val languages: MutableList,\n\u00a0\u00a0\u00a0\/\/\ud83d\ude03 nullable as requested\n\u00a0 val email: String?,\u00a0\n)<\/pre>\n<p><strong>\u81ea\u52d5\u5909\u63db\u624b\u6cd5\u306e\u5236\u9650\u4e8b\u9805:<\/strong><\/p>\n<p>jspecify \u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u3092\u4f7f\u7528\u3057\u3066\u3082\u8907\u96d1\u306a Java \u30d1\u30bf\u30fc\u30f3\u306f\u9069\u5207\u306b\u5909\u63db\u3055\u308c\u307e\u305b\u3093\u3002\u30bb\u30af\u30b7\u30e7\u30f3\u300c<em>3. \u30c1\u30a7\u30c3\u30af\u4f8b\u5916\u3092\u4f7f\u7528\u3057\u306a\u304f\u3066\u3082\u5b89\u5168\u6027\u306e\u9ad8\u3044 Kotlin \u30b3\u30fc\u30c9<\/em>\u300d\u3067\u4f8b\u793a\u3057\u305f\u4ee5\u4e0b\u306e\u81ea\u52d5\u5909\u63db\u6e08\u307f\u306e\u30b3\u30fc\u30c9\u3092\u8003\u5bdf\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p><strong>Kotlin<\/strong><\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"kotlin\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">fun downloadAndGetLargestFile(urls: MutableList): String? {\n\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\ud83e\udd28 using Stream, instead of Kotlin Collections\n\u00a0\u00a0\u00a0\u00a0\u00a0val contents = urls.stream().map { urlStr: String? -&gt;\n\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\ud83e\udd28 still using Optional, rather than Nullable types\n\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\ud83e\udd28 var but we want val!\n\u00a0\u00a0\u00a0\u00a0\u00a0var optional: Optional\n\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\ud83e\udd28 useless try-catch, no need to catch in Kotlin\n\u00a0\u00a0\u00a0\u00a0\u00a0try {\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0optional = Optional.of(URI(urlStr).toURL())\n\u00a0\u00a0\u00a0\u00a0\u00a0} catch (e: URISyntaxException) {\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0optional = Optional.empty()\n\u00a0\u00a0\u00a0\u00a0\u00a0} catch (e: MalformedURLException) {\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0optional = Optional.empty()\n\u00a0\u00a0\u00a0\u00a0\u00a0}\n\u00a0\u00a0\u00a0\u00a0\u00a0optional\n\u00a0\u00a0\u00a0}.filter { it!!.isPresent() }\/\/\ud83e\udd28 discouraged !! to force conversion to non-null\n\u00a0\u00a0\u00a0\u00a0.map {it.get() }\n\u00a0\u00a0\u00a0\u00a0.map { url: URL -&gt;\n      \/\/\ud83e\udd28 useless try-catch, no need to catch in Kotlin\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0try {\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0url.openStream().use { `is` -&gt;\u00a0\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0String(`is`.readAllBytes(), StandardCharsets.UTF_8)\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0} catch (e: IOException) {\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0throw IllegalArgumentException(e)\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\n\u00a0\u00a0\u00a0\u00a0}.toList()\n\u00a0\u00a0\u00a0\/\/\ud83e\udd28 usage of Java collections\u2026\n\u00a0\u00a0\u00a0return Collections.max(contents)\n}<\/pre>\n<p>\u81ea\u52d5\u5909\u63db\u306e\u7d50\u679c\u306f\u3001\u6c42\u3081\u3066\u3044\u308b\u6163\u7528\u7684\u306a\u3082\u306e\u304b\u3089\u306f\u7a0b\u9060\u3044\u3082\u306e\u3067\u3059\u3002<\/p>\n<p><strong>Kotlin<\/strong><\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"kotlin\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">fun downloadAndGetLargestFile(urls: List): String? =\n\u00a0\u00a0\u00a0urls.mapNotNull {\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0runCatching { URI(it).toURL() }.getOrNull()\n\u00a0\u00a0\u00a0}.maxOfOrNull{ it.openStream().use{ it.reader().readText() } }<\/pre>\n<p>\u81ea\u52d5\u5909\u63db\u3067\u305f\u305f\u304d\u53f0\u3092\u5f97\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u3059\u304c\u3001\u672c\u5f53\u306b\u6163\u7528\u7684\u306a Kotlin \u3092\u5b9f\u73fe\u3059\u308b\u306b\u306f\u5927\u5e45\u306a\u624b\u76f4\u3057\u3068\u6163\u7528\u7684\u306a Kotlin \u306e\u77e5\u8b58\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n<p><strong>3. AI \u652f\u63f4\u306b\u3088\u308b\u5909\u63db<\/strong><\/p>\n<p><strong>\u6700\u9069\u306a\u9069\u7528\u5bfe\u8c61: <\/strong>\u5805\u7262\u306a\u30c6\u30b9\u30c8\u30a4\u30f3\u30d5\u30e9\u30b9\u30c8\u30e9\u30af\u30c1\u30e3\u3092\u4f34\u3046\u3088\u308a\u5927\u898f\u6a21\u306a\u30b3\u30fc\u30c9\u30d9\u30fc\u30b9<\/p>\n<p><strong>\u8ab2\u984c:<\/strong> \u624b\u52d5\u30ec\u30d3\u30e5\u30fc\u304c\u5fc5\u8981<\/p>\n<p>AI \u306f\u57fa\u672c\u7684\u306a\u81ea\u52d5\u5909\u63db\u3088\u308a\u306f\u6163\u7528\u7684\u306a\u7d50\u679c\u3092\u751f\u6210\u3067\u304d\u308b\u53ef\u80fd\u6027\u306f\u3042\u308a\u307e\u3059\u304c\u3001\u6210\u529f\u3059\u308b\u306b\u306f\u5165\u5ff5\u306a\u6e96\u5099\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n<p><strong>\u524d\u63d0\u6761\u4ef6:<\/strong><\/p>\n<ol>\n<li><strong>\u5305\u62ec\u7684\u306a\u30c6\u30b9\u30c8\u30ab\u30d0\u30ec\u30c3\u30b8: <\/strong>LLM \u306e\u52d5\u4f5c\u306f\u4e88\u6e2c\u4e0d\u53ef\u80fd\u306a\u305f\u3081\u3001AI \u30cf\u30eb\u30b7\u30cd\u30fc\u30b7\u30e7\u30f3\u3092\u691c\u51fa\u3067\u304d\u308b\u4fe1\u983c\u6027\u306e\u9ad8\u3044\u30c6\u30b9\u30c8\u304c\u5fc5\u8981\u3067\u3059\u3002<\/li>\n<li><strong>\u3088\u304f\u7df4\u3089\u308c\u305f\u30b7\u30b9\u30c6\u30e0\u30d7\u30ed\u30f3\u30d7\u30c8:<\/strong> \u6a19\u6e96\u306b\u6cbf\u3063\u305f\u6163\u7528\u7684\u306a Kotlin \u5909\u63db\u3092\u5b9f\u73fe\u3059\u308b\u305f\u3081\u306e\u8a73\u7d30\u306a\u6307\u793a\u3092\u4f5c\u6210\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<a href=\"https:\/\/gist.github.com\/upeter\/554dcb541cd3fb4bf9ea0be0a6887405\" target=\"_blank\" rel=\"noreferrer noopener\">\u3053\u3061\u3089\u306e\u30b7\u30b9\u30c6\u30e0\u30d7\u30ed\u30f3\u30d7\u30c8<\/a>\u3092\u305f\u305f\u304d\u53f0\u306b\u3059\u308b\u3068\u3088\u3044\u3067\u3057\u3087\u3046\u3002<\/li>\n<li><strong>\u5e83\u7bc4\u56f2\u306b\u308f\u305f\u308b\u30b3\u30fc\u30c9\u30ec\u30d3\u30e5\u30fc:<\/strong> AI \u306e\u51fa\u529b\u306f\u5fb9\u5e95\u7684\u306a\u30ec\u30d3\u30e5\u30fc\u306b\u3088\u3063\u3066\u8ad6\u7406\u7684\u30fb\u6163\u7528\u7684\u306a\u6b63\u3057\u3055\u3092\u78ba\u4fdd\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u5927\u898f\u6a21\u306a\u30b3\u30fc\u30c9\u30d9\u30fc\u30b9\u306e\u5834\u5408\u3001\u3053\u306e\u30ec\u30d3\u30e5\u30fc\u306b\u306f\u591a\u5927\u306a\u7cbe\u795e\u7684\u306a\u8ca0\u8377\u304c\u304b\u304b\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n<\/ol>\n<p>\u63d0\u6848\u3055\u308c\u305f<a href=\"https:\/\/gist.github.com\/upeter\/554dcb541cd3fb4bf9ea0be0a6887405\" target=\"_blank\" rel=\"noreferrer noopener\">\u30b7\u30b9\u30c6\u30e0\u30d7\u30ed\u30f3\u30d7\u30c8<\/a>\u3092\u4f7f\u7528\u3057\u3066\u5909\u63db\u3092\u30ac\u30a4\u30c9\u3059\u308b\u3068\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u304b\u306a\u308a\u6e80\u8db3\u306e\u3044\u304f\u7d50\u679c\u3092\u5f97\u3089\u308c\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u305d\u308c\u3067\u3082\u5b8c\u74a7\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<p><strong>Kotlin<\/strong><\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"kotlin\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">fun downloadAndGetLargestFile(urls: List): String? {\n\u00a0\u00a0\u00a0val contents = urls\n      .mapNotNull {\u00a0\n            urlStr -&gt; runCatching { URI(urlStr).toURL() }.getOrNull()\u00a0\n      }.mapNotNull { url -&gt; runCatching {\u00a0\n            url.openStream().use { it.readAllBytes().toString(UTF_8)\n      \u00a0\u00a0\u00a0}\u00a0\n      }.getOrNull() }\n\n\u00a0\u00a0\u00a0return contents.maxOrNull()\n}<\/pre>\n<p><strong>4. \u5927\u898f\u6a21\u306a\u81ea\u52d5\u5909\u63db<\/strong><\/p>\n<p><strong>\u6700\u9069\u306a\u9069\u7528\u5bfe\u8c61:<\/strong> \u30b7\u30b9\u30c6\u30e0\u306b\u3088\u308b\u5909\u63db\u304c\u5fc5\u8981\u306a\u975e\u5e38\u306b\u5927\u898f\u6a21\u306a\u30b3\u30fc\u30c9\u30d9\u30fc\u30b9<\/p>\n<p>\u73fe\u5728\u3001Java \u30b3\u30fc\u30c9\u30d9\u30fc\u30b9\u304b\u3089\u6163\u7528\u7684\u306a Kotlin \u3078\u306e\u5927\u898f\u6a21\u306a\u5909\u63db\u3092\u53ef\u80fd\u306b\u3059\u308b\u30c4\u30fc\u30eb\u306f\u516c\u5f0f\u306b\u306f\u5b58\u5728\u3057\u307e\u305b\u3093\u3002\u305f\u3060\u3057\u3001Meta \u3068 Uber \u306f\u30d0\u30c3\u30af\u30a8\u30f3\u30c9\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3067\u3082\u5341\u5206\u306b\u52b9\u679c\u3092\u767a\u63ee\u3057\u305f\u624b\u6cd5\u306b\u3088\u308a\u3001Android \u30b3\u30fc\u30c9\u30d9\u30fc\u30b9\u3067\u3053\u306e\u8ab2\u984c\u3078\u306e\u53d6\u308a\u7d44\u307f\u3092\u6210\u529f\u3055\u305b\u307e\u3057\u305f\u3002 \u4ee5\u4e0b\u306e\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3068\u8b1b\u6f14\u3067\u306f\u3001Meta \u3068 Uber \u306b\u3088\u308b\u3053\u306e\u8ab2\u984c\u3078\u306e\u53d6\u308a\u7d44\u307f\u3092\u6df1\u304f\u7406\u89e3\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p><strong>Meta \u306e\u624b\u6cd5:<\/strong><\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"wp-image-656947\" style=\"width: 150px;\" src=\"https:\/\/blog.jetbrains.com\/wp-content\/uploads\/2025\/11\/unnamed-1.png\" alt=\"Meta\" width=\"1600\" height=\"900\" \/><\/p>\n<ul>\n<li><strong>\u6226\u7565:<\/strong> \u30eb\u30fc\u30eb\u30d9\u30fc\u30b9\u306e\u78ba\u5b9a\u7684\u306a\u5909\u63db<\/li>\n<li><strong>\u30ea\u30bd\u30fc\u30b9:<\/strong>\n<ul>\n<li><a href=\"https:\/\/engineering.fb.com\/2024\/12\/18\/android\/translating-java-to-kotlin-at-scale\/\" target=\"_blank\" rel=\"noreferrer noopener\">\u30a8\u30f3\u30b8\u30cb\u30a2\u30ea\u30f3\u30b0\u306e\u30d6\u30ed\u30b0\u8a18\u4e8b<\/a><\/li>\n<li><a href=\"https:\/\/www.youtube.com\/watch?v=zfnOjAYdWrc&amp;ab_channel=%40Scale\" target=\"_blank\" rel=\"noreferrer noopener\">\u30ab\u30f3\u30d5\u30a1\u30ec\u30f3\u30b9\u306e\u8b1b\u6f14<\/a><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><strong>Uber \u306e\u624b\u6cd5:<\/strong><\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"wp-image-656958\" style=\"width: 150px;\" src=\"https:\/\/blog.jetbrains.com\/wp-content\/uploads\/2025\/11\/unnamed.png\" alt=\"Uber\" width=\"225\" height=\"225\" \/><\/p>\n<ul>\n<li><strong>\u6226\u7565:<\/strong> \u5909\u63db\u30eb\u30fc\u30eb\u3092\u751f\u6210\u3059\u308b AI \u3092\u4f7f\u7528\u3057\u305f\u30eb\u30fc\u30eb\u30d9\u30fc\u30b9\u306e\u78ba\u5b9a\u7684\u306a\u5909\u63db<\/li>\n<li><strong>\u30ea\u30bd\u30fc\u30b9:<\/strong><a href=\"https:\/\/kotlinconf.com\/talks\/811915\/\" target=\"_blank\" rel=\"noreferrer noopener\"> KotlinConf \u306e\u30d7\u30ec\u30bc\u30f3\u8cc7\u6599<\/a><\/li>\n<\/ul>\n<p>\u3069\u3061\u3089\u306e\u4f1a\u793e\u3082\u624b\u52d5\u5909\u63db\u3084\u5358\u7d14\u306a\u81ea\u52d5\u5316\u306b\u983c\u308b\u3053\u3068\u306a\u304f\u3001\u30b7\u30b9\u30c6\u30e0\u7684\u306b\u7e70\u308a\u8fd4\u3057\u53ef\u80fd\u306a\u30d7\u30ed\u30bb\u30b9\u3092\u4f5c\u6210\u3059\u308b\u3053\u3068\u3067\u6210\u529f\u3057\u307e\u3057\u305f\u3002\u30eb\u30fc\u30eb\u30d9\u30fc\u30b9\u306e\u624b\u6cd5\u306b\u3088\u308a\u3001\u5927\u91cf\u306e\u30b3\u30fc\u30c9\u884c\u5168\u4f53\u306b\u308f\u305f\u3063\u3066\u4e00\u8cab\u6027\u3068\u54c1\u8cea\u304c\u78ba\u4fdd\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p><strong>\u91cd\u8981<\/strong>: Java \u304b\u3089 Kotlin \u306e\u5927\u898f\u6a21\u306a\u5909\u63db\u306b\u3088\u308a\u3001\u7d44\u7e54\u30ec\u30d9\u30eb\u3067\u306e\u8ab2\u984c\u304c\u767a\u751f\u3057\u307e\u3059\u3002\u4fe1\u983c\u6027\u3092\u78ba\u4fdd\u3059\u308b\u306b\u306f\u3001\u751f\u6210\u3055\u308c\u305f\u30b3\u30fc\u30c9\u306b\u5bfe\u3059\u308b\u300c\u30d2\u30e5\u30fc\u30de\u30f3\u30a4\u30f3\u30b6\u30eb\u30fc\u30d7\u300d\u306e\u30ec\u30d3\u30e5\u30fc\u304c\u5fc5\u8981\u3067\u3059\u3002\u305f\u3060\u3057\u3001\u8a08\u753b\u304c\u614e\u91cd\u306b\u884c\u308f\u308c\u306a\u304b\u3063\u305f\u5834\u5408\u3001\u81ea\u52d5\u5909\u63db\u306b\u3088\u3063\u3066\u5927\u91cf\u306e\u30d7\u30eb\u30ea\u30af\u30a8\u30b9\u30c8\u304c\u767a\u751f\u3057\u3001\u30a8\u30f3\u30b8\u30cb\u30a2\u306b\u591a\u5927\u306a\u8ca0\u8377\u304c\u304b\u304b\u308b\u53ef\u80fd\u6027\u3082\u3042\u308a\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u7d44\u7e54\u7684\u306a\u5f71\u97ff\u3092\u614e\u91cd\u306b\u8003\u616e\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u00a0<\/p>\n<p>\u5927\u898f\u6a21\u306a Kotlin \u5c0e\u5165\u3092\u6210\u529f\u3055\u305b\u308b\u306b\u306f\u3001\u30b3\u30fc\u30c9\u306e\u5909\u63db\u3060\u3051\u3067\u306f\u4e0d\u5341\u5206\u3067\u3042\u308b\u3053\u3068\u3092\u899a\u3048\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002\u30c1\u30fc\u30e0\u306e\u5c02\u9580\u77e5\u8b58\u3092\u96c6\u7a4d\u3057\u3001\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u6a19\u6e96\u3092\u78ba\u7acb\u3057\u3001\u7d44\u7e54\u306b\u9577\u671f\u7684\u306a\u4fa1\u5024\u3092\u3082\u305f\u3089\u3059\u6301\u7d9a\u53ef\u80fd\u306a\u30d7\u30ed\u30bb\u30b9\u3092\u4f5c\u6210\u3059\u308b\u3053\u3068\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n<p><strong>\u3069\u306e\u624b\u6cd5\u3092\u3069\u306e\u30bf\u30a4\u30df\u30f3\u30b0\u3067\u4f7f\u7528\u3059\u3079\u304d\u304b\u3092\u7c21\u5358\u306b\u8981\u7d04\u3057\u307e\u3059\u3002<\/strong><\/p>\n<ul>\n<li>\u5c0f\u898f\u6a21\u306a\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3067\u3042\u308b\u304b\u3001\u3044\u305a\u308c\u306b\u3057\u3066\u3082\u66f8\u304d\u76f4\u3057\u3066\u3044\u308b\u6700\u4e2d\u3067\u3042\u308b\u3002<br \/>\u2192 <strong>Kotlin \u3067\u66f8\u304d\u76f4\u3059\uff081\uff09<\/strong><strong><br \/><\/strong><\/li>\n<li>\u30ea\u30d5\u30a1\u30af\u30bf\u30ea\u30f3\u30b0\u5c02\u7528\u306e\u6642\u9593\u3092\u5272\u308a\u5f53\u3066\u3089\u308c\u308b\u4e2d\u898f\u6a21\u306e\u30b3\u30fc\u30c9\u30d9\u30fc\u30b9\u3067\u3042\u308b\u3002\u307e\u305f\u306f Kotlin \u3092\u5b66\u7fd2\u4e2d\u306e\u30c1\u30fc\u30e0\u304c\u3044\u308b\u3002<br \/>\u2192 <strong>IntelliJ IDEA \u306e\u81ea\u52d5\u5909\u63db + \u624b\u76f4\u3057<\/strong>\uff08\u30c6\u30b9\u30c8\u304b\u3089\u7740\u624b\u3059\u308b\uff09<strong>\uff082\uff09<\/strong><\/li>\n<li>\u7e70\u308a\u8fd4\u3057\u306e\u30d1\u30bf\u30fc\u30f3\u304c\u3042\u308a\u3001\u826f\u8cea\u306a\u30c6\u30b9\u30c8\u306e\u3042\u308b\u4e2d\u898f\u6a21\u30fb\u5927\u898f\u6a21\u306a\u30b3\u30fc\u30c9\u3067\u3042\u308b\u3002<br \/>\u2192 <strong>AI \u652f\u63f4\u306b\u3088\u308b\u624b\u6cd5\uff083\uff09 <\/strong><strong><br \/><\/strong><\/li>\n<li>\u7d44\u7e54\u30ec\u30d9\u30eb\u3067\u591a\u6570\u306e\u30b5\u30fc\u30d3\u30b9\u306b\u308f\u305f\u3063\u3066 Kotlin \u306b\u79fb\u884c\u3059\u308b\u3002<br \/>\u2192 <strong>\u5177\u4f53\u7684\u306a\u8a08\u753b\u306b\u57fa\u3065\u3044\u305f\u5927\u898f\u6a21\u306a\u81ea\u52d5\u5909\u63db<\/strong>\uff08\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u4e3b\u5c0e\uff09<strong>\uff084\uff09<\/strong><\/li>\n<\/ul>\n<h2 class=\"wp-block-heading\"><strong>Kotlin \u306e\u53ef\u80fd\u6027\u3092\u6700\u5927\u9650\u306b\u5f15\u304d\u51fa\u3059<\/strong><\/h2>\n<p>Kotlin \u306f\u958b\u767a\u8005\u306e\u751f\u7523\u6027\u3092\u3059\u3050\u306b\u5411\u4e0a\u3055\u305b\u307e\u3059\u3002\u305d\u306e\u7c21\u6f54\u306a\u69cb\u6587\u3001\u5b89\u5168\u6027\u6a5f\u80fd\u3001\u304a\u3088\u3073\u8c4a\u5bcc\u306a\u6a19\u6e96\u30e9\u30a4\u30d6\u30e9\u30ea\u306b\u3088\u308a\u3001\u591a\u304f\u306e\u958b\u767a\u8005\u306f\u4e00\u822c\u7684\u306b\u72ec\u5b66\u3084\u5b9f\u7fd2\u3092\u901a\u3058\u3066\u6570\u9031\u9593\u3067\u8cea\u306e\u9ad8\u3044\u30b3\u30fc\u30c9\u3092\u66f8\u3051\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u6307\u5c0e\u304c\u306a\u3051\u308c\u3070\u3001\u591a\u304f\u306e\u4eba\u306f\u53ef\u5909\u69cb\u9020\u3001\u5197\u9577\u306a\u30d1\u30bf\u30fc\u30f3\u3001\u6163\u7528\u7684\u306a\u6a5f\u80fd\u306e\u898b\u9003\u3057\u306a\u3069\u3001<em>Java \u30e9\u30a4\u30af<\/em>\u306b Kotlin \u3092\u4f7f\u7528\u3057\u3066\u3057\u307e\u3046\u843d\u3068\u3057\u7a74\u306b\u306f\u307e\u3063\u3066\u3057\u307e\u3044\u307e\u3059\u3002<\/p>\n<p><strong>\u30ec\u30d9\u30eb\u30a2\u30c3\u30d7\u3059\u308b<\/strong><\/p>\n<p>\u4e0d\u5909\u6027\u3001\u5f0f\u6307\u5411\u306e\u30b3\u30fc\u30c9\u3001DSL\u3001\u304a\u3088\u3073\u30b3\u30eb\u30fc\u30c1\u30f3\u306b\u3088\u308b\u4e26\u884c\u6027\u306e\u69cb\u9020\u5316\uff08\u4eee\u60f3\u30b9\u30ec\u30c3\u30c9\u306e\u6709\u7121\u3092\u554f\u308f\u306a\u3044\uff09\u3092\u53d6\u308a\u5165\u308c\u308b<em>\u6b21\u306e\u30ec\u30d9\u30eb<\/em>\u306b\u5230\u9054\u3059\u308b\u3068\u3001\u591a\u304f\u306e\u958b\u767a\u8005\u306f\u884c\u304d\u8a70\u3063\u3066\u3057\u307e\u3044\u307e\u3059\u3002<\/p>\n<p>\u3053\u306e\u6bb5\u968e\u3067\u306f\u3001\u5916\u90e8\u306e\u30c8\u30ec\u30fc\u30cb\u30f3\u30b0\u304c\u72ec\u5b66\u3088\u308a\u3082\u306f\u308b\u304b\u306b\u52b9\u679c\u304c\u9ad8\u3044\u3053\u3068\u306b\u6c17\u4ed8\u304d\u307e\u3057\u305f\u3002Kotlin \u3092\u9577\u5e74\u7d4c\u9a13\u3057\u3066\u3044\u308b\u958b\u767a\u8005\u3067\u3082\u3001\u591a\u304f\u306e\u5834\u5408\u306f\u6163\u7528\u7684\u306a\u30d1\u30bf\u30fc\u30f3\u3092\u63a1\u7528\u3057\u3001\u3053\u306e\u8a00\u8a9e\u306e\u53ef\u80fd\u6027\u3092\u6700\u5927\u9650\u306b\u5f15\u304d\u51fa\u3059\u305f\u3081\u306e\u96c6\u4e2d\u7684\u306a\u30b3\u30fc\u30c1\u30f3\u30b0\u3092\u6d3b\u7528\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" loading=\"lazy\" class=\"wp-image-656971\" src=\"https:\/\/blog.jetbrains.com\/wp-content\/uploads\/2025\/11\/kotlin-heroes.png\" alt=\"Kotlin Heroes\" width=\"1698\" height=\"1142\" \/><\/figure>\n<h2 class=\"wp-block-heading\"><strong>Kotlin \u306b\u79fb\u884c\u3059\u308b\u304b\u3057\u306a\u3044\u304b: \u3069\u306e\u3088\u3046\u306a\u4f1a\u793e\u306b\u3057\u305f\u3044\u306e\u304b\uff1f<\/strong><\/h2>\n<p>\u7d50\u5c40\u306e\u3068\u3053\u308d\u3001Kotlin \u3092\u5c0e\u5165\u3059\u308b\u304b\u3069\u3046\u304b\u306e\u5224\u65ad\u306b\u306f\u30a8\u30f3\u30b8\u30cb\u30a2\u30ea\u30f3\u30b0\u306e\u6587\u5316\u304c\u53cd\u6620\u3055\u308c\u307e\u3059\u3002\u4ee5\u4e0b\u306e\u9805\u76ee\u3092\u91cd\u8996\u3057\u3066\u3044\u307e\u3059\u304b\uff1f<\/p>\n<ul>\n<li><strong>\u5f93\u6765\u306e\u624b\u6cd5\uff08Java\uff09<\/strong>: \u4fdd\u5b88\u7684\u3001\u5f62\u5f0f\u7684\u3001\u5b89\u5b9a\u3002<\/li>\n<li><strong>\u9032\u6b69\u7684\u306a\u624b\u6cd5\uff08Kotlin\uff09<\/strong>: \u5b9f\u7528\u7684\u3001\u73fe\u5b9f\u7684\u3001\u9069\u5fdc\u7684\u3002<\/li>\n<\/ul>\n<p>\u3069\u3061\u3089\u306b\u3082\u30e1\u30ea\u30c3\u30c8\u304c\u3042\u308a\u307e\u3059\u3002Java \u3067\u3082\u76ee\u6a19\u3092\u9054\u6210\u3067\u304d\u308b\u3067\u3057\u3087\u3046\u3002\u3057\u304b\u3057\u3001Kotlin \u306a\u3089\u958b\u767a\u8005\u306e\u6e80\u8db3\u5ea6\u304c\u9ad8\u307e\u308a\u3001\u30d0\u30b0\u3082\u6e1b\u308a\u3001\u3088\u308a\u826f\u3044\u7d50\u679c\u304c\u5f97\u3089\u308c\u308b\u3068\u8003\u3048\u3089\u308c\u307e\u3059\u3002Kotlin \u306e\u65b9\u304c\u512a\u308c\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u3067\u306f\u306a\u304f\u3001\u7d44\u7e54\u304c\u6539\u5584\u306e\u305f\u3081\u306b\u6295\u8cc7\u3059\u308b\u5bb9\u6613\u304c\u3042\u308b\u304b\u3069\u3046\u304b\u304c\u554f\u984c\u306a\u306e\u3067\u3059\u3002<\/p>\n<p>\u3042\u306e\u6700\u521d\u306e Kotlin \u306e\u30c6\u30b9\u30c8\u304b\u3089\u7d44\u7e54\u5168\u4f53\u3067\u306e\u5c0e\u5165\u307e\u3067\u306e\u9053\u306e\u308a\u306f\u5fc5\u305a\u3057\u3082\u5bb9\u6613\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u304c\u3001\u9069\u5207\u306a\u624b\u6cd5\u3092\u3068\u308c\u3070\u9a5a\u304f\u307b\u3069\u4e88\u6e2c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002\u5c0f\u3055\u304f\u59cb\u3081\u3066\u4fa1\u5024\u3092\u8a3c\u660e\u3057\u3001\u30b3\u30df\u30e5\u30cb\u30c6\u30a3\u3092\u69cb\u7bc9\u3057\u3001\u3088\u304f\u8003\u3048\u3066\u62e1\u5927\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>\u73fe\u5728\u3068\u672a\u6765\u306e\u958b\u767a\u8005\u306b\u611f\u8b1d\u3055\u308c\u308b\u306f\u305a\u3067\u3059\u3002<\/p>\n<p><strong>\u30aa\u30ea\u30b8\u30ca\u30eb\uff08\u82f1\u8a9e\uff09\u30d6\u30ed\u30b0\u6295\u7a3f\u8a18\u4e8b\u306e\u4f5c\u8005\uff1a<\/strong><\/p>\n<div class=\"about-author \">\n<div class=\"about-author__box\">\n<div class=\"row\">\n<div class=\"about-author__box-img\"><img decoding=\"async\" src=\"https:\/\/blog.jetbrains.com\/wp-content\/uploads\/2025\/10\/a3f7-400o400o1-QYUavRYyARnAVJLCpM1m8M.webp\" alt=\"\" \/><\/div>\n<div class=\"about-author__box-text\">\n<h4>Urs Peter<\/h4>\n<p>Urs \u306f\u7d4c\u9a13\u8c4a\u5bcc\u306a\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u30a8\u30f3\u30b8\u30cb\u30a2\u3001\u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3\u30a2\u30fc\u30ad\u30c6\u30af\u30c8\u3001\u30ab\u30f3\u30d5\u30a1\u30ec\u30f3\u30b9\u8b1b\u6f14\u8005\u3001\u30c8\u30ec\u30fc\u30ca\u30fc\u3067\u3042\u308a\u3001\u4e3b\u306b Kotlin \u3068 Scala \u304c\u95a2\u308f\u308b\u30ec\u30b8\u30ea\u30a8\u30f3\u30c8\u3067\u62e1\u5f35\u53ef\u80fd\u3001\u304b\u3064\u30df\u30c3\u30b7\u30e7\u30f3\u30af\u30ea\u30c6\u30a3\u30ab\u30eb\u306a\u30b7\u30b9\u30c6\u30e0\u306e\u69cb\u7bc9\u306b 20 \u5e74\u4ee5\u4e0a\u643a\u308f\u3063\u3066\u304d\u307e\u3057\u305f\u3002<\/p>\n<p>\u30b3\u30f3\u30b5\u30eb\u30bf\u30f3\u30c8\u696d\u306e\u508d\u3089\u3001Kotlin \u3068 Scala \u306e\u8a00\u8a9e\u30b3\u30fc\u30b9\u304b\u3089\u30de\u30a4\u30af\u30ed\u30b5\u30fc\u30d3\u30b9\u3084\u30a4\u30d9\u30f3\u30c8\u99c6\u52d5\u578b\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u3068\u3044\u3063\u305f\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u95a2\u9023\u30c8\u30ec\u30fc\u30cb\u30f3\u30b0\u306b\u81f3\u308b\u591a\u7a2e\u591a\u69d8\u306a\u30b3\u30fc\u30b9\u306e\u30c8\u30ec\u30fc\u30ca\u30fc\u3068\u4f5c\u6210\u8005\u3068\u3057\u3066\u3082\u60c5\u71b1\u7684\u306b\u6d3b\u52d5\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u5143\u3005\u4eba\u3068\u306e\u4ea4\u6d41\u3092\u597d\u3080\u6027\u683c\u3067\u3042\u308a\u3001\u30df\u30fc\u30c8\u30a2\u30c3\u30d7\u3084\u30ab\u30f3\u30d5\u30a1\u30ec\u30f3\u30b9\u3067\u4ed6\u306e\u958b\u767a\u8005\u3068\u77e5\u8b58\u3092\u5171\u6709\u3057\u3001\u523a\u6fc0\u3057\u5408\u3046\u3053\u3068\u3092\u697d\u3057\u3093\u3067\u3044\u307e\u3059\u3002Urs \u306f JetBrains \u8a8d\u5b9a Kotlin \u30c8\u30ec\u30fc\u30ca\u30fc\u3067\u3059\u3002<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n    <div class=\"about-author \">\n        <div class=\"about-author__box\">\n            <div class=\"row\">\n                <div class=\"about-author__box-img\">\n                    <img decoding=\"async\" src=\"https:\/\/blog.jetbrains.com\/wp-content\/uploads\/2021\/08\/photo_2021-08-03_15-27-43-200x200.jpg\" width=\"200\" height=\"200\" alt=\"Alyona Chernyaeva\" loading=\"lazy\"  class=\"avatar avatar-200 wp-user-avatar wp-user-avatar-200 photo avatar-default\">\n                <\/div>\n                <div class=\"about-author__box-text\">\n                                            <h4>Alyona Chernyaeva<\/h4>\n                                                        <\/div>\n            <\/div>\n        <\/div>\n    <\/div>\n","protected":false},"author":1394,"featured_media":674746,"comment_status":"closed","ping_status":"closed","template":"","categories":[],"tags":[],"cross-post-tag":[],"acf":[],"_links":{"self":[{"href":"https:\/\/blog.jetbrains.com\/ja\/wp-json\/wp\/v2\/kotlin\/674742"}],"collection":[{"href":"https:\/\/blog.jetbrains.com\/ja\/wp-json\/wp\/v2\/kotlin"}],"about":[{"href":"https:\/\/blog.jetbrains.com\/ja\/wp-json\/wp\/v2\/types\/kotlin"}],"author":[{"embeddable":true,"href":"https:\/\/blog.jetbrains.com\/ja\/wp-json\/wp\/v2\/users\/1394"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.jetbrains.com\/ja\/wp-json\/wp\/v2\/comments?post=674742"}],"version-history":[{"count":4,"href":"https:\/\/blog.jetbrains.com\/ja\/wp-json\/wp\/v2\/kotlin\/674742\/revisions"}],"predecessor-version":[{"id":674824,"href":"https:\/\/blog.jetbrains.com\/ja\/wp-json\/wp\/v2\/kotlin\/674742\/revisions\/674824"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blog.jetbrains.com\/ja\/wp-json\/wp\/v2\/media\/674746"}],"wp:attachment":[{"href":"https:\/\/blog.jetbrains.com\/ja\/wp-json\/wp\/v2\/media?parent=674742"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.jetbrains.com\/ja\/wp-json\/wp\/v2\/categories?post=674742"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.jetbrains.com\/ja\/wp-json\/wp\/v2\/tags?post=674742"},{"taxonomy":"cross-post-tag","embeddable":true,"href":"https:\/\/blog.jetbrains.com\/ja\/wp-json\/wp\/v2\/cross-post-tag?post=674742"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}