A simple useful utility class that can supply a simple REPL (Read–eval–print loop) to any command-line application. It is actually provided as a *jar.
You have to add the *.jar into the project's path, and then import it:
import javarepl.REPL;
You can use any JavaREPL's utility methods through the REPL
identifier. For example:
int value = REPL.getInt("Your age") // It displays "Your age: _" and asks
// the user for an integer.
You can see other methods in documetation, under /doc/
directory.