AtomicBoolean JDK 1.6)

Description

public class AtomicBoolean

A boolean value that may be updated atomically.

A boolean value that may be updated atomically. See the
java.util.concurrent.atomic package specification for
description of the properties of atomic variables. An
AtomicBoolean is used in applications such as atomically
updated flags, and cannot be used as a replacement for a
Boolean.

See also:

Constructors

public AtomicBoolean ()

Creates a new AtomicBoolean with initial value false.

public AtomicBoolean (boolean initialValue)

Creates a new AtomicBoolean with the given initial value.

Creates a new AtomicBoolean with the given initial value.
Parameters:
- initialValue - the initial value

Methods

Hide/Show inherited methods

publicfinal boolean compareAndSet (boolean expect, boolean update)

Atomically sets the value to the given updated value if the current value == the expected value.

Atomically sets the value to the given updated value
if the current value == the expected value.
Returns: true if successful. False return indicates that the actual value was not equal to the expected value.
Parameters:
- expect - the expected value
- update - the new value

publicfinal boolean get ()

Returns the current value.

publicfinal boolean getAndSet (boolean newValue)

Atomically sets to the given value and returns the previous value.

publicfinal void lazySet (boolean newValue)

Eventually sets to the given value.

publicfinal void set (boolean newValue)

Unconditionally sets to the given value.

public String toString ()

Returns the String representation of the current value.

public boolean weakCompareAndSet (boolean expect, boolean update)

Atomically sets the value to the given updated value if the current value == the expected value.

May fail spuriously and does not provide ordering guarantees, so is only rarely an appropriate alternative to compareAndSet.
Returns: true if successful.
Parameters:
- expect - the expected value
- update - the new value