It's been a little more than a year since the first commit was pushed to our source control, and we are happy to announce the first public preview of Kotlin.
This preview works as follows:
You go to http://kotlin-demo.jetbrains.com and it loads a code editor in your browser:
You check out examples, modify them or even solve our sample toy-problems;
You run your code on a JVM running on our server, so that you can use familiar JDK classes;
Or, alternatively, you compile you code to JavaScript and run it in your browser:
Note that the JavaScript back-end is a pre-alpha versi