JFrame在单击按钮后冻结

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

public class MyFrame extends JFrame {
    private JButton button;

    public MyFrame() {
        button = new JButton("点击我");
        button.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                buttonClicked();
            }
        });

        add(button);

        setTitle("冻结示例");
        setSize(300, 200);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setVisible(true);
    }

    private void buttonClicked() {
        // 冻结界面
        setEnabled(false);

        // 模拟某个操作
        try {
            Thread.sleep(3000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }

        // 解冻界面
        setEnabled(true);
    }

    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable() {
            @Override
            public void run() {
                new MyFrame();
            }
        });
    }
}