FP_Screen_VM

public class Screen
{
    public void displayMessage( String message )
    {
        System.out.print( message );
    }

    public void displayMessageLine( String message )
    {
        System.out.println( message );
    }

    public void displayRupiahAmount( double amount )
    {
        System.out.printf( "Rp. %f", amount );
    }

}