Java事件授权处理机制

package sup.orange.learn;

import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

/**
 * Created by re-x on 10/26/14.
 */
public class EventManagerDemo {
    public static void main(String[] args) {
        final Frame f = new Frame("Test");
        Button b = new Button("PressMe");

        b.addActionListener(new ButtonHandler());

        f.setLayout(new FlowLayout());
        f.add(b);
        f.setSize(200, 300);
        f.addWindowListener(new WindowAdapter() {
            @Override
            public void windowClosing(WindowEvent e) {
                super.windowClosing(e);
                System.exit(0);
            }
        });

        f.setVisible(true);
    }
}

class ButtonHandler implements ActionListener {

    public void actionPerformed(ActionEvent e) {
        System.out.println("Got it!");
    }
}