自身類作為事件監聽器 :

Java程式碼:

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

/**
 *Java事件處理機制:自身類作為事件監聽器
 *@author Winty([email protected])
 *@version 2008-12-3
 */
class ThisClassEvent extends JFrame implements ActionListener{
    JButton btn;

    public ThisClassEvent(){
        super("Java事件監聽機制");
        setLayout(new FlowLayout());
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        btn=new JButton("點選");
        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();
    }
}

外部類作為事件監聽器 :

Java程式碼

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

/**
 *Java事件處理機制:外部類作為事件監聽器
 *@author Winty([email protected])
 *@version 2008-12-3
 */
class OuterClassEvent extends JFrame{
    JButton btn;

    public OuterClassEvent(){
        super("Java事件監聽機制");
        setLayout(new FlowLayout());
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

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

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

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

/*外部類*********************************/
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);
    }
}

匿名內部類作為事件監聽器 :

Java程式碼

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

/**
 *Java事件處理機制:匿名內部類作為事件監聽器
 *@author Winty([email protected])
 *@version 2008-12-3
 */
class AnonymousEvent extends JFrame{
    JButton btn;

    public AnonymousEvent(){
        super("Java事件監聽機制");
        setLayout(new FlowLayout());
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        btn=new JButton("點選");
        /*匿名內部類******************************/
        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();
    }
}

內部類作為事件監聽器:

Java程式碼:

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

/**
 *Java事件處理機制:內部類作為事件監聽器
 *@author Winty([email protected])
 *@version 2008-12-3
 */
class InnerClassEvent extends JFrame{
    JButton btn;

    public InnerClassEvent(){
        super("Java事件監聽機制");
        setLayout(new FlowLayout());
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

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

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

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

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