JAVA如何用按钮关闭窗体

很久没有用过界面编程了,就当复习一下了,哈哈

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如一楼所说的,给按钮加一个监听器ActionListener,写一个实现方法

actionPerformed.此时当按钮点击时会调用actionPerformed方法,代码如下:

import javax.swing.*;

import java.awt.*;

import java.awt.event.*;

public class Close extends JFrame implements ActionListener{

JButton close;

public Close(){

close = new JButton("close");//增加一个按钮

add(close);

close.addActionListener(this);//给按钮增加一个监听器

setLayout(new FlowLayout());

setSize(200,100);

setVisible(true);

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

}

//捕捉到按钮点击时的事件处理方法

//按钮点击时一定会自动执行actionPerformed(ActionEvent e)方法

public void actionPerformed(ActionEvent e){

//关闭整个应用程序.如果只是是想关闭当前窗口,可以用

//dispose();

System.exit(0);

}

public static void main(String[] args){

new Close();

}

}

java程序关闭窗口代码

import java.applet.*;

import java.awt.Color;

import java.awt.Frame;

import javax.swing.JFrame;

import java.awt.event.*;

public class FirstFrame extends Frame {

public static void main(String args[]) {

FirstFrame fr = new FirstFrame("First contianer!");

fr.setSize(240, 240);

//继承JFrame的关闭窗口代码

//fr.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

//继承Frame的

fr.addWindowListener(new WindowAdapter() {    

public void windowClosing(WindowEvent e) {        

System.exit(0);//退出系统   

}

});

fr.setVisible(true);

}

public FirstFrame(String str) {

super(str);

}

}

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

运行java代码怎样操作显示windowclosed--窗体关闭事件,求解答！！！

效果图

你想要触发的是窗口关闭事件windowClosed, 那么你需要调用dispose方法,对窗口进行销毁.

修改代码如下

public void windowClosing(WindowEvent e) {

System.out.println("windowClosing--窗体正在关闭事件");

//f.setVisible(false);//隐藏窗口

f.dispose();//销毁窗口--这行代码会触发windowClosed事件

}

还有其他一些细节的修改,参考下面的代码

import java.awt.*;

import java.awt.event.*;

//类名不要写一个小写字母,推荐写一个完整的名词来作为类名

public class EventDemo {

public static void main(String[] args) {

Frame f = new Frame("hello");

f.setSize(300, 300);

f.setLocation(300, 200);

//f.setVisible(true);//不要先显示窗口, 先显示了窗口,就看不到"窗口打开事件"了

f.addWindowListener(new WindowListener() {

@Override

public void windowOpened(WindowEvent e) {

System.out.println("windowOpened--窗体打开事件");

}

@Override

public void windowIconified(WindowEvent e) {

System.out.println("windowIconified--窗体图标化事件");

}

@Override

public void windowDeiconified(WindowEvent e) {

System.out.println("windowDeiconifie--窗体取消图标化事件");

}

@Override

public void windowDeactivated(WindowEvent e) {

System.out.println("windowDeactivated--窗体停用事件");

}

@Override

public void windowClosing(WindowEvent e) {

System.out.println("windowClosing--窗体正在关闭事件");

//f.setVisible(false);//隐藏窗口

f.dispose();//销毁窗口

}

@Override

public void windowClosed(WindowEvent e) {

System.out.println("windowClosed--窗体关闭事件");

System.exit(0);

}

@Override

public void windowActivated(WindowEvent e) {

System.out.println("windowActivated--窗体激活事件");

}

});

f.setVisible(true);//窗口显示

}

}