如何将带有值的mouseclicked中的标签引用到a。(Java、NetBeans)

import javax.swing.*;
import java.awt.event.*;

public class MouseClickedExample {
    public static void main(String[] args) {
        JFrame frame = new JFrame("Mouse Clicked Example");
        JLabel label = new JLabel("Click Me");
        
        label.addMouseListener(new MouseAdapter() {
            public void mouseClicked(MouseEvent e) {
                JLabel a = null; // 声明并初始化变量a
                
                // 获取触发事件的标签对象
                JLabel clickedLabel = (JLabel) e.getSource();
                
                // 将标签对象赋值给变量a
                a = clickedLabel;
                
                // 打印变量a的文本内容
                System.out.println("Clicked Label Text: " + a.getText());
            }
        });
        
        frame.add(label);
        frame.setSize(300, 200);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setVisible(true);
    }
}