Downloaded Scala IDE from TypeSafe. The simplest thing to test is to write a ‘Hello Word’ program. I did that by creating a Scala Object. Here is the code

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package greeter

object helloworld {
    println("hello, world")
}

I proceeded to run it by using the ‘Run it…’. I expected to see ‘Run as Scala Application’ but the option was not there.

Turns out it is my mistake. I need to extends the object from App:

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package greeter

object helloworld extends App{
    println("hello, world")
}

Then the option will appear (as shown here):