在击键时关闭JPopupMenu

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

public class ClosePopupMenuExample {
    public static void main(String[] args) {
        JFrame frame = new JFrame("Close JPopupMenu Example");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setSize(300, 200);

        JPopupMenu popupMenu = new JPopupMenu();
        popupMenu.add(new JMenuItem("Option 1"));
        popupMenu.add(new JMenuItem("Option 2"));
        popupMenu.add(new JMenuItem("Option 3"));

        JTextField textField = new JTextField();
        textField.setBounds(50, 50, 200, 30);
        textField.addKeyListener(new KeyListener() {
            @Override
            public void keyTyped(KeyEvent e) {
            }

            @Override
            public void keyPressed(KeyEvent e) {
                if (e.getKeyCode() == KeyEvent.VK_ENTER) {
                    popupMenu.setVisible(false); // 关闭JPopupMenu
                }
            }

            @Override
            public void keyReleased(KeyEvent e) {
            }
        });

        frame.add(textField);
        frame.setVisible(true);
    }
}