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java窗体运行时最大化及关闭方法示例

来源：互联网发布：穿越知乎编辑：程序博客网时间：2024/06/06 01:49

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其实这原本是一个有关java的基础话题，不过既然有人提出来，不妨说两句，顺便也可做为初学者的一个参考。

//1.窗体启动时最大化
//Frame1.java

import java.awt.*;
import java.awt.event.*;
import javax.swing.UIManager;

public class Frame1 extends WindowAdapter{
public Frame1() {
    Frame f=new Frame();
    f.addWindowListener(this);     //将Frame1设为f的事件处理者
    Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();     //得到屏幕的尺寸
    f.setLocation(0, 0);
    f.setSize(screenSize.width,screenSize.height);      //将窗体的尺寸设为屏幕的尺寸
    f.setVisible(true);
}

public static void main(String[] args) {
    new Frame1();
}

public void windowClosing(WindowEvent e) {
    System.exit(0);
}
}

//2.关闭窗体的六种方法
//2.1.使用JFrame的enableEvents和processWindowEvent
//Frame1.java

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class Frame1 extends JFrame {
public Frame1() {
    enableEvents(AWTEvent.WINDOW_EVENT_MASK);
    this.setSize(new Dimension(400, 300));
    this.setTitle("Frame1");
}

protected void processWindowEvent(WindowEvent e) {
    super.processWindowEvent(e);
    if (e.getID() == WindowEvent.WINDOW_CLOSING) {
      System.exit(0);
    }
}
}

//2.2.直接实现WindowListener接口
//Frame1.java

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

public class Frame1 extends Frame implements WindowListener {
public Frame1() {
    this.setSize(new Dimension(400, 300));
    this.setTitle("Frame1");
    this.addWindowListener(this);
}

public void windowClosing(WindowEvent windowEvent) {
System.exit(0);
}
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) { }
}

//2.3.直接继承窗体适配器WindowAdapter
//Frame1.java

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

public class Frame1 extends WindowAdapter {
public Frame1() {
    Frame f=new Frame();
    f.setSize(new Dimension(400, 300));
    f.setTitle("Frame1");
    f.addWindowListener(this);
    f.setVisible(true);
}
public static void main(String[] s){
    new Frame1();
}
public void windowClosing(WindowEvent windowEvent) {
    System.exit(0);
}
}

//2.4.间接继承窗体适配器WindowAdapter
//Frame1.java

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

public class Frame1 extends Frame {
public Frame1() {
    this.setSize(new Dimension(400, 300));
    this.setTitle("Frame1");
    this.addWindowListener(new winAdapter());
    this.setVisible(true);
}
public static void main(String[] s){
    new Frame1();
}
}
class winAdapter extends WindowAdapter{
public void windowClosing(WindowEvent windowEvent) {
    System.exit(0);
}
}

//2.5.间接实现WindowListener接口
//Frame1.java

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

public class Frame1 extends Frame {
public Frame1() {
    this.setSize(new Dimension(400, 300));
    this.setTitle("Frame1");
    this.addWindowListener(new winEventHandle());
    this.setVisible(true);
}
public static void main(String[] s){
    new Frame1();
}
}
class winEventHandle implements WindowListener {
public void windowClosing(WindowEvent windowEvent) {
    System.exit(0);
}
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) { }
}

//2.6.使用Inner Class
//Frame1.java

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

public class Frame1{
public Frame1(){
    Frame f=new Frame();
    f.addWindowListener(new WindowAdapter(){
      public void windowClosing(WindowEvent e){
        System.exit(0);
      }
    });
    f.setSize(new Dimension(400, 300));
    f.setVisible(true);
}

public static void main(String[] s){
new Frame1();
}
}

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