Create a simple swing frame

import javax.swing.*;

import java.awt.*;

import java.applet.*;

import java.awt.event.*;

    public class ws extends JFrame

    {

         Container c;

         public ws(String title)

          {

               super("Frame");

               c=this.getContentPane();

               c.setBackground(Color.pink);

               setSize(300,400);

               addWindowListener(new f1());

               setDefaultCloseOperation(DISPOSE_ON_CLOSE);

               show();

          }

        class f1 extends WindowAdapter

          {

                 public void windowClosed(WindowEvent e)

                        {

                                 System.exit(0);

                        }

          }

                public static void main(String args[])

                        {

                                  ws w=new ws("frame 1");

                        }        

}