Scala Basics - Interpreter for testing/learning!

Once you're machine installed with scala, then starting scala interpreter is easy

Note: refer this post for Scala install instructions for Ubuntu

$ scala

Welcome to Scala version 2.9.1.final (Java HotSpot(TM) Server VM, Java 1.6.0_26).
Type in expressions to have them evaluated.
Type :help for more information.

scala>

Now you're machine is ready for testing Scala code!