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JAVA如何用按鈕關(guān)閉窗體
很久沒有用過界面編程了,就當復(fù)習一下了,哈哈
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如一樓所說的,給按鈕加一個監(jiān)聽器ActionListener,寫一個實現(xiàn)方法
actionPerformed.此時當按鈕點擊時會調(diào)用actionPerformed方法,代碼如下:
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");//增加一個按鈕
add(close);
close.addActionListener(this);//給按鈕增加一個監(jiān)聽器
setLayout(new FlowLayout());
setSize(200,100);
setVisible(true);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
//捕捉到按鈕點擊時的事件處理方法
//按鈕點擊時一定會自動執(zhí)行actionPerformed(ActionEvent e)方法
public void actionPerformed(ActionEvent e){
//關(guān)閉整個應(yīng)用程序.如果只是是想關(guān)閉當前窗口,可以用
//dispose();
System.exit(0);
}
public static void main(String[] args){
new Close();
}
}
java中關(guān)閉當前窗口用什么代碼
你用的 swing 嗎？加上 setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
或者加上窗口事件監(jiān)聽器：
addWindowListener(new WindowAdapter() {
public void windowClosing (WindowEvent we) {
dispose();
}
});
java關(guān)閉窗體的六種方法
前段時間集中精力寫了兩篇論文 很久沒寫博文了 現(xiàn)在繼續(xù)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( );
}
}
}
直接實現(xiàn)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) {? }
}
直接繼承窗體適配器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( );
}
}
間接繼承窗體適配器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( );
}
}
間接實現(xiàn)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的關(guān)閉方法
setDefaultCloseOperation(EXIT_ON_CLOSE);
frame的關(guān)閉方法如下
this addWindowListener(new java awt event WindowAdapter() {
public void windowClosing(java awt event WindowEvent e) {
System exit( );
}
lishixinzhi/Article/program/Java/hx/201311/27073
java程序關(guān)閉窗口代碼
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);
//繼承JFrame的關(guān)閉窗口代碼
//fr.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//繼承Frame的
fr.addWindowListener(new?WindowAdapter()?{????
public?void?windowClosing(WindowEvent?e)?{????????
System.exit(0);//退出系統(tǒng)???
}
});
fr.setVisible(true);
}
public?FirstFrame(String?str)?{
super(str);
}
}
新聞標題：java窗體關(guān)閉代碼 關(guān)閉窗體的代碼
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