类层次结构
- java.lang.Object 
       
- java.util.concurrent.locks.AbstractOwnableSynchronizer (implements java.io.Serializable) 
         
- java.util.concurrent.locks.AbstractQueuedLongSynchronizer (implements java.io.Serializable)
 - java.util.concurrent.locks.AbstractQueuedSynchronizer (implements java.io.Serializable)
 
 - java.util.concurrent.locks.AbstractQueuedLongSynchronizer.ConditionObject (implements java.util.concurrent.locks.Condition, java.io.Serializable)
 - java.util.concurrent.locks.AbstractQueuedSynchronizer.ConditionObject (implements java.util.concurrent.locks.Condition, java.io.Serializable)
 - java.util.concurrent.locks.LockSupport
 - java.util.concurrent.locks.ReentrantLock (implements java.util.concurrent.locks.Lock, java.io.Serializable)
 - java.util.concurrent.locks.ReentrantReadWriteLock (implements java.util.concurrent.locks.ReadWriteLock, java.io.Serializable)
 - java.util.concurrent.locks.ReentrantReadWriteLock.ReadLock (implements java.util.concurrent.locks.Lock, java.io.Serializable)
 - java.util.concurrent.locks.ReentrantReadWriteLock.WriteLock (implements java.util.concurrent.locks.Lock, java.io.Serializable)
 - java.util.concurrent.locks.StampedLock (implements java.io.Serializable)
 
 - java.util.concurrent.locks.AbstractOwnableSynchronizer (implements java.io.Serializable) 
         
 
Interface Hierarchy
- java.util.concurrent.locks.Condition
 - java.util.concurrent.locks.Lock
 - java.util.concurrent.locks.ReadWriteLock