Hello world in Kotlin

• Create a new project as specified in the previous post.
• Right-click on src folder and select New->Kotlin File/Class.

• In the dialog box, specify the name of the file and click on OK.

• Type the following code:

fun main(args: Array<String>)
{
println(“hello, Kotlin!”)
}

• From the top menu bar, click on the Run->Run… . A list of configurations will appear. Note that the IDE has already created a configuration for us.

• Choose the HelloKt (which is the name of the Kotlin file).
• The output should appear in the bottom pane.

• Note that the project structure will show an Out directory containing the generated class file.