java中如何设置Dialog关闭

[lihongxu2010]

import java.awt.*;
import java.awt.event.*;
public class TestWindowClosing{
public static void main(String[] args) {
new FrameWindow("HELLO");
}
}
class FrameWindow extends Frame {
public static int i = 1; //设置计数器，计算窗口的数量，当界面没有显示窗口时退出系统
FrameWindow(String s) {
super(s);
setLayout(new FlowLayout());
setBackground(Color.yellow);
setBounds(300,300,400, 600);
setVisible(true);
Button bt = new Button("点击弹出窗口");
this.add(bt);
bt.addActionListener(new ButtonActionL());
this.addWindowListener(
new WindowAdapter() {
public void windowClosing(WindowEvent e) {
i--;//每调用一次关闭事件，窗口数量减少1
setVisible(false);
if(i == 0) {
System.exit(0);
} else {
}
}
});
}
class ButtonActionL implements ActionListener {
public void actionPerformed(ActionEvent e) {
i++; //每调用一次，窗口数增1
FrameWindow c = new FrameWindow("子窗口");
c.setBounds(200,200,200,200);
c.setBackground(Color.blue);
c.setVisible(true);
Dialog a = new Dialog(c,true);
a.setVisible(true);
a.addWindowListener(
new WindowAdapter() {
public void windowClosing(WindowEvent e) {
setVisible(false);
//System.exit(-1);
}
});
}
}
}
为什么无法关闭Dialog，请高手指点。

[sunyiz]

楼主为什么要用阻断模式调用dialog?

这样试试

import java.awt.*;
import java.awt.event.*;

public class TestWindowClosing {
	public static void main(String[] args) {
		new FrameWindow("HELLO");
	}
}

class FrameWindow extends Frame {
	public static int i = 1; // 设置计数器，计算窗口的数量，当界面没有显示窗口时退出系统

	FrameWindow(String s) {
		super(s);
		setLayout(new FlowLayout());
		setBackground(Color.yellow);
		setBounds(300, 300, 400, 600);
		setVisible(true);
		Button bt = new Button("点击弹出窗口");
		this.add(bt);
		bt.addActionListener(new ButtonActionL());
		this.addWindowListener(new WindowAdapter() {
			public void windowClosing(WindowEvent e) {
				i--;// 每调用一次关闭事件，窗口数量减少1
				setVisible(false);
				if (i == 0) {
					System.exit(0);
				} else {
				}
			}
		});
	}

	class ButtonActionL implements ActionListener {
		public void actionPerformed(ActionEvent e) {
			i++; // 每调用一次，窗口数增1
			FrameWindow c = new FrameWindow("子窗口");
			c.setBounds(200, 200, 200, 200);
			c.setBackground(Color.blue);
			c.setVisible(true);
			c.addWindowListener(new WindowAdapter() {
				public void windowClosing(WindowEvent e) {
					i--;// 每调用一次关闭事件，窗口数量减少1
					setVisible(false);
					if (i == 0) {
						System.exit(0);
					} else {
					}
				}
			});
			final Dialog a = new Dialog(c);
			a.setVisible(true);
			a.addWindowListener(new WindowAdapter() {
				public void windowClosing(WindowEvent e) {
					a.dispose();
//					setVisible(false);
					// System.exit(-1);
				}
			});
		}
	}
}

[hezhiyonging]

楼上应该正解

[lihongxu2010]

还是不行，无法关闭