操作侦听器不更新java中的变量

public class MyListenerExample {
    private int myVariable; // 成员变量

    public MyListenerExample() {
        JButton button = new JButton("Click me");
        button.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                myVariable = 10; // 更新成员变量
                System.out.println("Variable updated to: " + myVariable);
            }
        });
    }
}

SwingUtilities.invokeLater(new Runnable() {
    @Override
    public void run() {
        // 在这里更新UI和变量
        myVariable = 10;
        System.out.println("Variable updated to: " + myVariable);
    }
});

JButton button = new JButton("Click me");
button.addActionListener(new ActionListener() {
    @Override
    public void actionPerformed(ActionEvent e) {
        myVariable = 10;
        System.out.println("Variable updated to: " + myVariable);
    }
});