在多线程/ KeyBinding中使用keyListeners

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

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

        JPanel panel = new JPanel();
        panel.setFocusable(true);
        panel.requestFocusInWindow();
        panel.addKeyListener(new KeyListenerExample());

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

    @Override
    public void keyPressed(KeyEvent e) {
        int keyCode = e.getKeyCode();
        if (keyCode == KeyEvent.VK_UP) {
            // 处理向上箭头按下事件
        } else if (keyCode == KeyEvent.VK_DOWN) {
            // 处理向下箭头按下事件
        }
    }

    @Override
    public void keyReleased(KeyEvent e) {
        // 处理按键释放事件
    }

    @Override
    public void keyTyped(KeyEvent e) {
        // 处理按键键入事件
    }
}