 Known Direct Subclasses
| InheritableThreadLocal<T> |
A variable for which each thread has its own value; child threads will
inherit the value at thread creation time. |
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Class Overview
A variable for which each thread has its own value. Supports null
values.
Summary
| Public Constructors |
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ThreadLocal()
Creates a new thread local variable.
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| Public Methods |
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T
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get()
Returns the value of this variable for the current thread.
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void
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remove()
Removes the entry for this variable in the current thread.
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void
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set(T value)
Sets the value of this variable for the current thread.
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| Protected Methods |
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T
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initialValue()
Provides the initial value of this variable for the current thread.
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[Expand]
Inherited Methods |
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From class java.lang.Object
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Object
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clone()
Returns a new instance of the same class as the receiver, whose slots
have been filled in with the values in the slots of the receiver.
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boolean
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equals(Object o)
Compares the argument to the receiver, and returns true if they represent
the same object using a class specific comparison.
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void
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finalize()
Called by the virtual machine when there are no longer any (non-weak)
references to the receiver.
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final
Class<? extends Object>
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getClass()
Returns the unique instance of java.lang.Class which represents the class
of the receiver.
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int
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hashCode()
Returns an integer hash code for the receiver.
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final
void
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notify()
Causes one thread which is wait ing on the receiver to be
made ready to run.
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final
void
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notifyAll()
Causes all threads which are wait ing on the receiver to
be made ready to run.
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String
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toString()
Returns a string containing a concise, human-readable description of the
receiver.
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final
void
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wait(long time, int frac)
Causes the thread which sent this message to be made not ready to run
either pending some change in the receiver (as indicated by
notify or notifyAll) or the expiration of
the timeout.
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final
void
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wait(long time)
Causes the thread which sent this message to be made not ready to run
either pending some change in the receiver (as indicated by
notify or notifyAll) or the expiration of
the timeout.
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final
void
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wait()
Causes the thread which sent this message to be made not ready to run
pending some change in the receiver (as indicated by notify
or notifyAll).
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Public Constructors
public
ThreadLocal
()
Creates a new thread local variable.
Public Methods
public
T
get
()
Returns the value of this variable for the current thread. If an entry
doesn't yet exist for this variable on this thread, this method will
create an entry, populating the value with the result of
initialValue().
public
void
remove
()
Removes the entry for this variable in the current thread. If this call
is followed by a get() before a set(T),
#get() will call initialValue() and create a new
entry with the resulting value.
public
void
set
(T value)
Sets the value of this variable for the current thread. If set to
null, the value will be set to null and the underlying entry will still
be present.
Protected Methods
protected
T
initialValue
()
Provides the initial value of this variable for the current thread.
The default implementation returns null.
