applet跳出自定义窗口

    1、写一个类继承JDialog：

    如：

package untitled2;

import javax.swing.JDialog;
import javax.swing.JPanel;
import java.awt.Frame;
import java.awt.BorderLayout;
import java.awt.Rectangle;
import javax.swing.JButton;
import javax.swing.JTextArea;
import java.util.Date;
import javax.swing.JScrollPane;

/**
 * <p>Title: </p>
 *
 * <p>Description: </p>
 *
 * <p>Copyright: Copyright (c) 2009</p>
 *
 * <p>Company: </p>
 *
 * @author not attributable
 * @version 1.0
 */
public class Dialog1 extends   JDialog {

    JPanel   panel1   =   new   JPanel();
    JTextArea jTextArea1 = new JTextArea();
    JScrollPane jScrollPane1 = new JScrollPane();
    public   Dialog1(Frame   frame,   String   title,   boolean   modal)   {
         super(frame,   title,   modal);
         try   {
             jbInit();
             pack();
         }
         catch(Exception   ex)   {
             ex.printStackTrace();
         }
     }

     public   Dialog1()   {
         this(null,   "",   false);
     }
     void   jbInit()   throws   Exception   {
         panel1.setLayout(null);
        this.getContentPane().setLayout(null);
        jScrollPane1.setBounds(new Rectangle(39, 61, 320, 233));
        this.getContentPane().add(panel1, null);
        panel1.add(jScrollPane1);
        jScrollPane1.getViewport().add(jTextArea1);
        panel1.setBounds(new Rectangle(0, 0, 400, 300));
        acceptConnections();
    }
   
    private void acceptConnections() {
                  new Thread() {
                         public void run() {
                                 while (true) {
                                    try {
                                        jTextArea1.setText(jTextArea1.getText() +
                                                "\n" + getDate());
                                    } catch (InterruptedException ex) {
                                    }
                                  
                                 }
                         }
                 }.start();
 
         }
        
         private String getDate() throws InterruptedException {
             Thread.sleep(1000);
             Date date = new Date();
            
             return date.toLocaleString();
         }

2、在applet的按钮中调用自定义的Dialog类：

如：

 Frame frame = new Frame();

   Dialog1 dlg = new Dialog1(frame, "关于本软件", true);
        Dimension dlgSize = dlg.getPreferredSize();
        Dimension frmSize = getSize();
        Point loc = getLocation();
        dlg.setLocation((frmSize.width - dlgSize.width) / 2 + loc.x,
                        (frmSize.height - dlgSize.height) / 2 + loc.y + 12);
        dlg.setSize(new Dimension(300, 200));
        dlg.setModal(true);
        dlg.setVisible(true);
        //等dlg关闭后，会才执行刷新label2
        this.jLabel2.setText("dsfdf");