ActionListener动作监听

import javax.swing.*;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;//ActionListener:动作监控(点击鼠标，按下空间)public class Actionlistentertestttest1 {    public static void main(String[] args) {        JFrame f=new JFrame();        f.setSize(500,500);        f.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);        f.setLayout(null);        JButton jl1=new JButton(按钮);        jl1.setBounds(0,0,100,100);        f.getContentPane().add(jl1);        jl1.addActionListener(new ActionListener() {            @Override            public void actionPerformed(ActionEvent e) {                System.out.println(“我被点了！！！！");            }        });        f.setVisible(true);    }}