如何使用Java检测PC已空闲30秒？

import java.awt.*;
import java.awt.event.*;
import java.util.Date;

public class IdleTimeDetector {

    private static long lastActivityTime = new Date().getTime();
    private static final int IDLE_TIME_LIMIT = 30000; // 30 seconds

    public static void main(String[] args) {
        // Add listeners for keyboard and mouse events
        Toolkit.getDefaultToolkit().addAWTEventListener(new AWTEventListener() {
            @Override
            public void eventDispatched(AWTEvent event) {
                if (event instanceof KeyEvent || event instanceof MouseEvent) {
                    lastActivityTime = new Date().getTime();
                }
            }
        }, AWTEvent.KEY_EVENT_MASK | AWTEvent.MOUSE_EVENT_MASK | AWTEvent.MOUSE_MOTION_EVENT_MASK);

        // Check for idle time every second
        new Thread(() -> {
            while (true) {
                try {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
                long currentTime = new Date().getTime();
                long idleTime = currentTime - lastActivityTime;
                if (idleTime >= IDLE_TIME_LIMIT) {
                    System.out.println("PC has been idle for 30 seconds.");
                    // Perform your desired action here
                }
            }
        }).start();
    }
}