import java.awt.*;import javax.swing.JPanel;import javax.swing.*;public class Bean1 extends JPanel {  BorderLayout borderLayout1 = new BorderLayout();  public Bean1() {    try {      jbInit();      JOptionPane.showOptionDialog(null, "This is a option dialog", "Option Dialog Example",      JOptionPane.OK_CANCEL_OPTION,JOptionPane.WARNING_MESSAGE,null,null,null);    }    catch(Exception ex) {      ex.printStackTrace();    }  }  private void jbInit() throws Exception {    this.setLayout(borderLayout1);  }}