# Uses of Interface
java.util.concurrent.locks.Lock

Packages that use Lock
Package
Description
java.util.concurrent.locks
Interfaces and classes providing a framework for locking and waiting for conditions that is distinct from built-in synchronization and monitors.

## Uses of Lock in java.util.concurrent.locks

Classes in java.util.concurrent.locks that implement Lock
Modifier and Type
Class
Description
`class`
`ReentrantLock`
A reentrant mutual exclusion `Lock` with the same basic behavior and semantics as the implicit monitor lock accessed using `synchronized` methods and statements, but with extended capabilities.
`static class`
`ReentrantReadWriteLock.ReadLock`
The lock returned by method `ReentrantReadWriteLock.readLock()`.
`static class`
`ReentrantReadWriteLock.WriteLock`
The lock returned by method `ReentrantReadWriteLock.writeLock()`.
Methods in java.util.concurrent.locks that return Lock
Modifier and Type
Method
Description
`Lock`
StampedLock.`asReadLock()`
Returns a plain `Lock` view of this StampedLock in which the `lock()` method is mapped to `StampedLock.readLock()`, and similarly for other methods.
`Lock`
StampedLock.`asWriteLock()`
Returns a plain `Lock` view of this StampedLock in which the `lock()` method is mapped to `StampedLock.writeLock()`, and similarly for other methods.
`Lock`
ReadWriteLock.`readLock()`
Returns the lock used for reading.
`Lock`
ReadWriteLock.`writeLock()`
Returns the lock used for writing.