jcalc.java

import javax.swing.JFrame;

public class jcalc
{
    public static void main( String[] args)
    {
        jcalcframe gridBagFrame = new jcalcframe();
        gridBagFrame.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
        gridBagFrame.setSize( 300, 300 );
        gridBagFrame.setVisible( true );
    }
}