Java事件处理机制- 事件监听器的四种实现方式

 转自http://wcily123.iteye.com/blog/345221

• 自身类作为事件监听器
• 外部类作为事件监听器
• 匿名内部类作为事件监听器
• 内部类作为事件监听器

自身类作为事件监听器 :

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

/**
 *Java事件处理机制:自身类作为事件监听器
 *@author Winty([e-mail])
 *@version 2008-12-3
 */
class ThisClassEvent extends JFrame implements ActionListener{
    JButton btn;

    public ThisClassEvent(){
        super("Java事件监听机制");
        setLayout(new FlowLayout());
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        btn=new JButton("点击");
        btn.addActionListener(this);
        getContentPane().add(btn);

        setBounds(200,200,300,160);
        setVisible(true);
    }

    /**************************************/
    public void actionPerformed (ActionEvent e){
        Container c=getContentPane();
        c.setBackground(Color.red);
    }
    /**************************************/

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

 import javax.swing.*;  
 import java.awt.*;  
 import java.awt.event.*;  
   
 /** 
  *Java事件处理机制:自身类作为事件监听器 
  *@author Winty([e-mail])  
  *@version 2008-12-3 
  */  
 class ThisClassEvent extends JFrame implements ActionListener{   
     JButton btn;  
   
     public ThisClassEvent(){  
         super("Java事件监听机制");  
         setLayout(new FlowLayout());  
         setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);  
   
         btn=new JButton("点击");  
         btn.addActionListener(this);  
         getContentPane().add(btn);  
   
         setBounds(200,200,300,160);  
         setVisible(true);  
     }  
   
     /**************************************/  
     public void actionPerformed (ActionEvent e){  
         Container c=getContentPane();  
         c.setBackground(Color.red);  
     }  
     /**************************************/  
   
     public static void main(String args[]){  
         new ThisClassEvent();  
     }  
 }   

 

 

外部类作为事件监听器 :

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

/**
 *Java事件处理机制:外部类作为事件监听器
 *@author Winty([e-mail])
 *@version 2008-12-3
 */
class OuterClassEvent extends JFrame{
    JButton btn;

    public OuterClassEvent(){
        super("Java事件监听机制");
        setLayout(new FlowLayout());
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        btn=new JButton("点击");
        btn.addActionListener(new OuterClass(this));
        getContentPane().add(btn);

        setBounds(200,200,300,160);
        setVisible(true);
    }

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

/*外部类*********************************/
class OuterClass implements ActionListener{
    OuterClassEvent oce;

    public OuterClass(OuterClassEvent oce){
        this.oce = oce;
    }

    public void actionPerformed(ActionEvent e){
        Container c=oce.getContentPane();
        c.setBackground(Color.red);
    }
}

 import java.awt.*;  
 import java.awt.event.*;  
 import javax.swing.*;  
   
 /** 
  *Java事件处理机制:外部类作为事件监听器 
  *@author Winty([e-mail])  
  *@version 2008-12-3 
  */  
 class OuterClassEvent extends JFrame{   
     JButton btn;  
   
     public OuterClassEvent(){  
         super("Java事件监听机制");  
         setLayout(new FlowLayout());  
         setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);  
   
         btn=new JButton("点击");  
         btn.addActionListener(new OuterClass(this));  
         getContentPane().add(btn);  
   
         setBounds(200,200,300,160);  
         setVisible(true);  
     }  
   
     public static void main(String args[]){  
         new OuterClassEvent();  
     }  
 }   
   
 /*外部类*********************************/  
 class OuterClass implements ActionListener{  
     OuterClassEvent oce;  
   
     public OuterClass(OuterClassEvent oce){  
         this.oce = oce;  
     }  
   
     public void actionPerformed(ActionEvent e){  
         Container c=oce.getContentPane();  
         c.setBackground(Color.red);  
     }  
 }  

 

 

 

匿名内部类作为事件监听器 :

 

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

/**
 *Java事件处理机制:匿名内部类作为事件监听器
 *@author Winty([e-mail])
 *@version 2008-12-3
 */
class AnonymousEvent extends JFrame{
    JButton btn;

    public AnonymousEvent(){
        super("Java事件监听机制");
        setLayout(new FlowLayout());
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        btn=new JButton("点击");
        /*匿名内部类******************************/
        btn.addActionListener(
            new ActionListener(){
                public void actionPerformed(ActionEvent e){
                    Container c=getContentPane();
                    c.setBackground(Color.red);
                }
            }
        );
        /***************************************/
        getContentPane().add(btn);

        setBounds(200,200,300,160);
        setVisible(true);
    }

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

 import java.awt.*;  
 import java.awt.event.*;  
 import javax.swing.*;  
   
 /** 
  *Java事件处理机制:匿名内部类作为事件监听器 
  *@author Winty([e-mail])  
  *@version 2008-12-3 
  */  
 class AnonymousEvent extends JFrame{   
     JButton btn;  
   
     public AnonymousEvent(){  
         super("Java事件监听机制");  
         setLayout(new FlowLayout());  
         setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);  
   
         btn=new JButton("点击");  
         /*匿名内部类******************************/  
         btn.addActionListener(  
             new ActionListener(){  
                 public void actionPerformed(ActionEvent e){  
                     Container c=getContentPane();  
                     c.setBackground(Color.red);  
                 }  
             }  
         );  
         /***************************************/  
         getContentPane().add(btn);  
   
         setBounds(200,200,300,160);  
         setVisible(true);  
     }  
   
     public static void main(String args[]){  
         new AnonymousEvent();  
     }  
 }   

 

 

 

内部类作为事件监听器:

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

/**
 *Java事件处理机制:内部类作为事件监听器
 *@author Winty([e-mail])
 *@version 2008-12-3
 */
class InnerClassEvent extends JFrame{
    JButton btn;

    public InnerClassEvent(){
        super("Java事件监听机制");
        setLayout(new FlowLayout());
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        btn=new JButton("点击");
        btn.addActionListener(new InnerClass());
        getContentPane().add(btn);

        setBounds(200,200,300,160);
        setVisible(true);
    }

    /*内部类*********************************/
    class InnerClass implements ActionListener{
        public void actionPerformed (ActionEvent e){
            Container c=getContentPane();
            c.setBackground(Color.red);
        }
    }
    /**************************************/

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