j2se windowClosing问题

Question

/**
 * 初始化窗休面板
 * @return void
 */
private void initialize() {
this.setSize(600, 400);
this.setContentPane(getJContentPane());
this.setTitle(XmlConfig.getValue("title"));
this.setLocation();
this.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent arg0) {
super.windowClosing(arg0);
JOptionPane op=new JOptionPane();
int ret=op.showConfirmDialog(null,"确定要关闭应用程序吗？","关闭提示",JOptionPane.OK_CANCEL_OPTION);
if(JOptionPane.OK_OPTION==ret){
ScanThread.flag = true; // 设置线程类,状态
System.exit(0);
}else{
op.showMessageDialog(null, "当前已经在windowclosing中，要退出去，似乎不行了，寻高手解决它。");
}
}
});
this.setVisible(true);
}以上方法完成初始化一个Frame窗体.我现在想要实现点关闭的X时,提示一下,如果用户取消关闭.我就不想关窗体了.请问高手怎么解决它?

Answer 1

frame.setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);
frame.addWindowListener(new WindowAdapter() {}）import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;import javax.swing.JFrame;
import javax.swing.JOptionPane;public class FrameTest {    public static void main(String[] args) {
        JFrame frame = new JFrame("test");
        frame.setSize(500, 400);
        frame.setVisible(true);
        frame.setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);
        frame.addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent arg0) {
                int k = JOptionPane.showConfirmDialog((JFrame) arg0.getSource(), "你确定退出程序嘛?",
                        "Exit  Confirm", JOptionPane.YES_NO_OPTION,
                        JOptionPane.QUESTION_MESSAGE);
                if (k == 0) {
                    System.out.println("exit program");
                    System.exit(0);
                }else {
                   return ;
                }
            }
        });
    }
}

Answer 2

添加如下方法即可:/**
     * 重载该方法，以便在窗口关闭时，能退出
     * @param e WindowEvent  windows事件
     */
    protected void processWindowEvent(WindowEvent e) {
        if (e.getID() == WindowEvent.WINDOW_CLOSING) {
         JOptionPane op = new JOptionPane();
int ret = op.showConfirmDialog(null, "确定要关闭应用程序吗？", "关闭提示",JOptionPane.OK_CANCEL_OPTION);
if (JOptionPane.OK_OPTION == ret) {
System.exit(0);
} else {
op.showMessageDialog(null,"当前已经在windowclosing中，要退出去，似乎不行了，寻高手解决它。");
return;
}
        }
        super.processWindowEvent(e);
        if (e.getID() == WindowEvent.WINDOW_CLOSING) {
            Runtime.getRuntime().halt(0);
        }
    }