It seems like I have to use the Scala IDE to add Scala Nature.

When I extend the class to SampleGamer, the class needs to be abstract. After adding the override/implement methods,(stateMachineSelectMove function was added) I had to change the style of coding to Scala. 

@Override
    public Move stateMachineSelectMove(long timeout)
            throws TransitionDefinitionException, MoveDefinitionException,
            GoalDefinitionException {
        // TODO Auto-generated method stub
        return null;
    }

to (not sure where to move/change the exceptions)

override def  stateMachineSelectMove(timeout: Long):Move 
            throws TransitionDefinitionException , MoveDefinitionException,
            GoalDefinitionException {
        // TODO Auto-generated method stub
        return null;
    }

What do I do with the exceptions?