JavaGUI事件监听机制超详细讲解

import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
public class AddActionListener {
    public static void main(String[] args) {
        JFrame jf = new JFrame("AddActionListener");
        jf.setLayout(new FlowLayout(FlowLayout.LEFT));
        jf.setBounds(400, 300, 400, 300);
        JTextArea area=new JTextArea(20,10);
        area.setLineWrap(true);
        JButton jb=new JButton("秃头");
        jb.addActionListener(new AbstractAction() {
            @Override
            public void actionPerformed(ActionEvent e) {
                area.setText("不要熬夜！");
            }
        });
        jf.add(area);
        jf.add(jb);
        jf.setVisible(true);
        jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    }
}

import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
public class AddActionListener {
    public static void main(String[] args) {
        JFrame jf = new JFrame("AddActionListener");
        jf.setLayout(new FlowLayout(FlowLayout.LEFT));
        jf.setBounds(400, 300, 400, 300);
        JTextArea area=new JTextArea(20,10);
        area.setLineWrap(true);
        JButton jb=new JButton("秃头");
        jb.addActionListener(new AbstractAction() {
            @Override
            public void actionPerformed(ActionEvent e) {
                area.append("不要熬夜！");
            }
        });
        jf.add(area);
        jf.add(jb);
        jf.setVisible(true);
        jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    }
}