事件监听Java

public class ListanceFrame {
//    按下按钮，触发一些事件
    public static void main(String[] args) {
        Frame frame=new Frame();
        Button button=new Button();
        MyActionListener myActionListener=new MyActionListener();
        button.addActionListener(myActionListener);
        frame.setSize(600,600);

        frame.add(button);
        frame.setVisible(true);
    }
//    关闭窗体的事件
    public static void windowClose(Frame frame){
        frame.addWindowListener(new WindowAdapter() {
            @Override
            public void windowClosing(WindowEvent e) {
                System.exit(0);
            }
        });
    }
}
class MyActionListener implements ActionListener{
    @Override
    public void actionPerformed(ActionEvent e) {
        System.out.println("a");
    }
}

 多个按钮共享一个监听

public class TestActionTwo {
    public static void main(String[] args) {
        //    两个按钮，实现同一个监听
//    开始 停止
        Frame frame=new Frame();
        Button button1=new Button("start");
        Button button2=new Button("stop");

        button2.setActionCommand("button2-stop");

        MyMonitor myMonitor=new MyMonitor();

        button1.addActionListener(myMonitor);
        button2.addActionListener(myMonitor);
        frame.add(button1,BorderLayout.NORTH);
        frame.add(button2,BorderLayout.SOUTH);
        frame.setSize(600,600);
        frame.setVisible(true);
    }

}

class MyMonitor implements ActionListener{
    @Override
    public void actionPerformed(ActionEvent e) {
        System.out.println("按钮被点击："+e.getActionCommand());
    }
}