Java Swing如何在JTextFields上使用不同的按钮动作定义多个焦点侦听器

import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.FocusEvent;
import java.awt.event.FocusListener;

public class TextFieldExample extends JFrame {
    private JTextField textField1;
    private JTextField textField2;
    private JButton button1;
    private JButton button2;

    public TextFieldExample() {
        // 创建JTextField对象
        textField1 = new JTextField(20);
        textField2 = new JTextField(20);

        // 创建JButton对象
        button1 = new JButton("Button 1");
        button2 = new JButton("Button 2");

        // 创建焦点侦听器
        FocusListener focusListener1 = new FocusListener() {
            @Override
            public void focusGained(FocusEvent e) {
                // 当textField1获得焦点时执行的操作
                System.out.println("textField1获得焦点");
            }

            @Override
            public void focusLost(FocusEvent e) {
                // 当textField1失去焦点时执行的操作
                System.out.println("textField1失去焦点");
            }
        };

        FocusListener focusListener2 = new FocusListener() {
            @Override
            public void focusGained(FocusEvent e) {
                // 当textField2获得焦点时执行的操作
                System.out.println("textField2获得焦点");
            }

            @Override
            public void focusLost(FocusEvent e) {
                // 当textField2失去焦点时执行的操作
                System.out.println("textField2失去焦点");
            }
        };

        // 添加焦点侦听器
        textField1.addFocusListener(focusListener1);
        textField2.addFocusListener(focusListener2);

        // 创建按钮动作
        ActionListener actionListener1 = new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                // 当button1被点击时执行的操作
                System.out.println("button1被点击");
            }
        };

        ActionListener actionListener2 = new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                // 当button2被点击时执行的操作
                System.out.println("button2被点击");
            }
        };

        // 添加按钮动作
        button1.addActionListener(actionListener1);
        button2.addActionListener(actionListener2);

        // 创建布局并添加组件
        setLayout(new FlowLayout());
        add(textField1);
        add(textField2);
        add(button1);
        add(button2);

        // 设置窗口属性
        setTitle("TextField Example");
        setSize(300, 200);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setVisible(true);
    }

    public static void main(String[] args) {
        new TextFieldExample();
    }
}