Simplest Test of the JFrame Class
import javax.swing.* ;
class FirstFrame extends JFrame {
public FirstFrame() {
setTitle(“FirstFrame”) ;
setSize(450, 300) ; // Default size is 0 by 0
}
}
public class FrameTest {
public static void main(String [] args) {
JFrame frame = new FirstFrame() ; // Create JFrame.
frame.show() ; // Display it.
System.out.println(“main() done.”) ; // Done.
}
}