如何通过等待JVM处理的对象锁来导致线程处于阻塞状态

synchronized

synchronized

someObject.wait()

someObject.notify()

[load some object, obj, onto the operand stack]
monitorenter  // grab the lock

// do stuff

[load obj onto the operand stack again] 
monitorexit   // release the lock

obj

monitorenter

monitorexit

monitorenter

monitorexit

Object mutex = new Object();
....
synchronized(mutex) {
    //lock to mutex is acquired.
    mutex.wait(); //lock to mutex is released. Thread is waiting for somebody to call notify().
    doSomething();
}

synchronized(Thread1.mutex) {
    //acquires the lock on mutex. 
    //Can be done only after mutex.wait() is called from Thread1
    // and the lock is released
    Thread1.mutex.notify(); // notifies Thread1 that it can be resumed.
}