java关闭窗体的六种方法

前段时间集中精力写了两篇论文 很久没写博文了 现在继续了

使用JFrame的enableEvents和processWindowEvent

//Frame java

import java awt *

import java awt event *

import javax swing *

public class Frame extends JFrame {

public Frame () {

enableEvents(AWTEvent WINDOW_EVENT_MASK)

this setSize(new Dimension( ))

this setTitle( Frame )

}

protected void processWindowEvent(WindowEvent e) {

super processWindowEvent(e)

if (e getID() == WindowEvent WINDOW_CLOSING) {

System exit( )

}

}

}

直接实现WindowListener接口

//Frame java

import java awt *

import java awt event *

public class Frame extends Frame implements WindowListener {

public Frame () {

this setSize(new Dimension( ))

this setTitle( Frame )

this addWindowListener(this)

}

public void windowClosing(WindowEvent windowEvent) {

System exit( )

}

public void windowOpened(WindowEvent windowEvent) {  }

public void windowClosed(WindowEvent windowEvent) {  }

public void windowIconified(WindowEvent windowEvent) {  }

public void windowDeiconified(WindowEvent windowEvent) {  }

public void windowActivated(WindowEvent windowEvent) {  }

public void windowDeactivated(WindowEvent windowEvent) {  }

}

直接继承窗体适配器WindowAdapter

//Frame java

import java awt *

import java awt event *

public class Frame extends  WindowAdapter {

public Frame () {

Frame f=new Frame()

f setSize(new Dimension( ))

f setTitle( Frame )

f addWindowListener(this)

f setVisible(true)

}

public static void main(String[] s){

new Frame ()

}

public void windowClosing(WindowEvent windowEvent) {

System exit( )

}

}

间接继承窗体适配器WindowAdapter

//Frame java

import java awt *

import java awt event *

public class Frame extends  Frame {

public Frame () {

this setSize(new Dimension( ))

this setTitle( Frame )

this addWindowListener(new winAdapter())

this setVisible(true)

}

public static void main(String[] s){

new Frame ()

}

}

class winAdapter extends WindowAdapter{

public void windowClosing(WindowEvent windowEvent) {

System exit( )

}

}

间接实现WindowListener接口

//Frame java

import java awt *

import java awt event *

public class Frame extends  Frame {

public Frame () {

this setSize(new Dimension( ))

this setTitle( Frame )

this addWindowListener(new winEventHandle())

this setVisible(true)

}

public static void main(String[] s){

new Frame ()

}

}

class winEventHandle implements WindowListener {

public void windowClosing(WindowEvent windowEvent) {

System exit( )

}

public void windowOpened(WindowEvent windowEvent) {  }

public void windowClosed(WindowEvent windowEvent) {  }

public void windowIconified(WindowEvent windowEvent) {  }

public void windowDeiconified(WindowEvent windowEvent) {  }

public void windowActivated(WindowEvent windowEvent) {  }

public void windowDeactivated(WindowEvent windowEvent) {  }

}

使用Inner Class

//Frame java

import java awt *

import java awt event *

public class Frame {

public Frame (){

Frame f=new Frame()

f addWindowListener(new WindowAdapter(){

public void windowClosing(WindowEvent e){

System exit( )

}

})

f setSize(new Dimension( ))

f setVisible(true)

}

public static void main(String[] s){

new Frame ()

}

}

Jframe的关闭方法

setDefaultCloseOperation(EXIT_ON_CLOSE)

frame的关闭方法如下

this addWindowListener(new java awt event WindowAdapter() {

public void windowClosing(java awt event WindowEvent e) {

System exit( )

}

lishixinzhi/Article/program/Java/hx/201311/27073

方法一：

类 JFrame

javax.swing.JFrame

JFrame中的方法void setDefaultCloseOperation（int）可以设置

以下为改方法的用法：

setDefaultCloseOperation

public void setDefaultCloseOperation(int operation)设置用户在此窗体上发起

"close" 时默认执行的 *** 作。必须脊销指定以下选项之一：

DO_NOTHING_ON_CLOSE（在 WindowConstants 中定义）：不执行任何 *** 作；要求程序在已注册的

WindowListener 对象的 windowClosing 方法中处理该 *** 作。

HIDE_ON_CLOSE（在 WindowConstants 中定义）：调用任意已注册的 WindowListener

对象后自动隐藏该窗体。

DISPOSE_ON_CLOSE（在 WindowConstants 中定义）：调用任意已注册 WindowListener

的对象后自动隐藏并释放该窗体。

EXIT_ON_CLOSE（在 JFrame 中定义）：使用 System exit

方法退出应用程序。仅在应用程序中使用。

默认情况下，该值被设置为 HIDE_ON_CLOSE。更改此属性的值将导致激发属性更改事件，其属性名称为

"defaultCloseOperation"。

注：当 Java 虚拟机 (VM) 中最衫野庆后一个可显示窗口被释放后，虚拟机可能会终止

要实现你说的，应该采用

setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE)

方法二：

import java.awt.event.WindowAdapter

import java.awt.event.WindowEvent

import javax.swing.JFrame

import javax.swing.JOptionPane

public class Test extends JFrame {

public Test(){

this.setTitle("title")

this.setSize(300,200)

this.setLocation(100,100)

//设置关闭时什么也不做

this.setDefaultCloseOperation(DO_NOTHING_ON_CLOSE)

//监听关闭按钮的点击 *** 作

this.addWindowListener(new WindowAdapter(){

//new 一个WindowAdapter 类 重写windowClosing方法

//WindowAdapter是个适配器类 具体看jdk的帮助文或握档

public void windowClosing(WindowEvent e) {

//这里写对话框

if(JOptionPane.showConfirmDialog(null,

"退出","提

示",JOptionPane.YES_NO_OPTION,JOptionPane.QUESTION_MESSAGE)==JOptionPane.YES_OPTION){

System.exit(0)

}

}

})

this.setVisible(true)

}

public static void main(String[] args) {

new Test()

}

}

效果图

参考代码和注释如下

import java.awt.event.*

import javax.swing.*

public class DemoFrame extends JFrame{

JButton jbExit

public DemoFrame() {

jbExit = new JButton("退出")

//当点击退出 按钮时候的响应器

jbExit.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) {

doExit()//退出时候的方法睁郑

}

})

JPanel jp = new JPanel()

jp.add(jbExit)

add(jp)

setTitle("窗口")// 窗口标题

setSize(380, 185)// 窗口大小

setLocationRelativeTo(null)// 窗口居中

//setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE)//通常添加这行代码,点击窗口右下角的关闭时会结束程序

setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE)//右下角的关闭,不主动采取任何行动

//当点击窗口右上角的关闭按钮时候的响应悉洞颂器

addWindowListener(new WindowAdapter() {

@Override

public void windowClosing(WindowEvent e) {

doExit()

}

})

}

// main方法

public static void main(String[] 颤扮args) {

new DemoFrame().setVisible(true)

}

//退出时候的选择

private void doExit() {

int n = JOptionPane.showConfirmDialog(null, "你确定要退出吗?", "消息提示",JOptionPane.YES_NO_OPTION)

//取消选择是 -1 ,确定是0 ,取消是1

System.out.println(n)

if(n==0) { //如果选择了确定

System.exit(0)//那么退出

}

}

}

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