事件模型的基礎響應

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

public class TestActionEvent {

	public static void main(String[] args) {

		Frame fr = new Frame("Action Event");
		fr.setBackground(new Color(20,100,50));
		fr.setVisible(true);
		fr.setBounds(300, 300, 400, 350);
		Button bu = new Button("Press Me!");
		fr.setLayout(new FlowLayout(FlowLayout.CENTER));
		fr.add(bu);
		fr.pack();

		Monitor bp = new Monitor();//聲明請求監聽
		bu.addActionListener(bp);//添加事件
	}

}

class Monitor implements ActionListener{
	public void actionPerformed(ActionEvent e){
		System.out.println("That button was pressed!");//添加 響應方法
	}
}