LockInfo (Java Platform SE 6) - JDK 5 Documentation v6.0, Java 2 SDK 英文文档

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Java™ Platform
Standard Ed. 6

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java.lang.management
Class LockInfo

java.lang.Object
  java.lang.management.LockInfo

Direct Known Subclasses:: MonitorInfo

public class LockInfo
extends Object
extends Object

Information about a lock. A lock can be a built-in object monitor, an ownable synchronizer, or the Condition object associated with synchronizers.

An ownable synchronizer is a synchronizer that may be exclusively owned by a thread and uses AbstractOwnableSynchronizer (or its subclass) to implement its synchronization property. ReentrantLock and ReentrantReadWriteLock are two examples of ownable synchronizers provided by the platform.

MXBean Mapping

LockInfo is mapped to a CompositeData as specified in the type mapping rules of MXBeans.

Since:: 1.6
See Also:: AbstractOwnableSynchronizer, Condition

Constructor Summary

LockInfo(String className, int identityHashCode)
          Constructs a LockInfo object.

Method Summary

String getClassName()
          Returns the fully qualified name of the class of the lock object.

int getIdentityHashCode()
          Returns the identity hash code of the lock object returned from the System.identityHashCode(java.lang.Object) method.

String toString()
          Returns a string representation of a lock.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Summary
`LockInfo(String className, int identityHashCode)` Constructs a `LockInfo` object.

Method Summary
`String`	`getClassName()` Returns the fully qualified name of the class of the lock object.
`int`	`getIdentityHashCode()` Returns the identity hash code of the lock object returned from the `System.identityHashCode(java.lang.Object)` method.
`String`	`toString()` Returns a string representation of a lock.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait`

Constructor Detail

LockInfo

@ConstructorProperties(value={"className","identityHashCode"})
public LockInfo(String className,
                                           int identityHashCode)

Constructs a LockInfo object.

Parameters:: className - the fully qualified name of the class of the lock object.; identityHashCode - the identity hash code of the lock object.

Method Detail

getClassName

public String getClassName()

Returns the fully qualified name of the class of the lock object.

Returns:: the fully qualified name of the class of the lock object.

getIdentityHashCode

public int getIdentityHashCode()

Returns the identity hash code of the lock object returned from the System.identityHashCode(java.lang.Object) method.

Returns:: the identity hash code of the lock object.

toString

public String toString()

Returns a string representation of a lock. The returned string representation consists of the name of the class of the lock object, the at-sign character `@', and the unsigned hexadecimal representation of the identity hash code of the object. This method returns a string equals to the value of:

 lock.getClass().getName() + '@' + Integer.toHexString(System.identityHashCode(lock))

where lock is the lock object.

Overrides:: toString in class Object

Returns:: the string representation of a lock.