mybutton.java

来自「java GUI用户界面程序」· Java 代码 · 共 27 行

package chapter7.event;

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

public class MyButton
    extends Button
{
    public MyButton(String label)
    {
        super(label);
        enableEvents(AWTEvent.ACTION_EVENT_MASK);
    }
    protected void processActionEvent(ActionEvent e)
    {
       System.out.println("处理事件");
       super.processActionEvent(e);
    }
    public static void main(String[] args)
    {
        Frame f = new Frame();
        f.setSize(200,200);
        f.add(new MyButton("确定"));
        f.setVisible(true);
    }
}