Java JVM 分析、线程状态 - “监视器”状态是什么意思

Java JVM 分析、线程状态 - “监视器”状态是什么意思？

java
public class MonitorStatusExample {
    public synchronized void method1() {
        System.out.println("Thread " + Thread.currentThread().getName() + " is executing method1");
        try {
            Thread.sleep(2000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }
    public synchronized void method2() {
        System.out.println("Thread " + Thread.currentThread().getName() + " is executing method2");
    }
    public static void main(String[] args) {
        MonitorStatusExample example = new MonitorStatusExample();
        Thread thread1 = new Thread(() -> {
            example.method1();
        });
        Thread thread2 = new Thread(() -> {
            example.method2();
        });
        thread1.start();
        thread2.start();
    }
}