Class AtomicBoolean  java.lang.Object   java.util.concurrent.atomic.AtomicBoolean     All Implemented Interfaces: Serializable   public class AtomicBoolean
extends Object
implements Serializable 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.  Since: 1.5 See Also: Serialized Form  Constructors   Constructor and Description   
AtomicBoolean() Creates a new AtomicBoolean with initial value false.    
AtomicBoolean(boolean initialValue) Creates a new AtomicBoolean with the given initial value.    Methods   Modifier and Type Method and Description   boolean 
compareAndSet(boolean expect,
             boolean update) Atomically sets the value to the given updated value if the current value == the expected value.    boolean 
get() Returns the current value.    boolean 
getAndSet(boolean newValue) Atomically sets to the given value and returns the previous value.    void 
lazySet(boolean newValue) Eventually sets to the given value.    void 
set(boolean newValue) Unconditionally sets to the given value.    String 
toString() Returns the String representation of the current value.    boolean 
weakCompareAndSet(boolean expect,
                 boolean update) Atomically sets the value to the given updated value if the current value == the expected value.    Methods inherited from class java.lang.Object
 clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait  Constructors AtomicBoolean public AtomicBoolean(boolean initialValue) Creates a new AtomicBoolean with the given initial value.  Parameters: 
initialValue - the initial value  AtomicBoolean public AtomicBoolean() Creates a new AtomicBoolean with initial value false. Methods get public final boolean get() Returns the current value.  Returns: the current value  compareAndSet public final boolean compareAndSet(boolean expect,
                                   boolean update) Atomically sets the value to the given updated value if the current value == the expected value.  Parameters: 
expect - the expected value 
update - the new value Returns: 
true if successful. False return indicates that the actual value was not equal to the expected value.  weakCompareAndSet 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.
  Parameters: 
expect - the expected value 
update - the new value Returns: 
true if successful  set public final void set(boolean newValue) Unconditionally sets to the given value.  Parameters: 
newValue - the new value  lazySet public final void lazySet(boolean newValue) Eventually sets to the given value.  Parameters: 
newValue - the new value Since: 1.6  getAndSet public final boolean getAndSet(boolean newValue) Atomically sets to the given value and returns the previous value.  Parameters: 
newValue - the new value Returns: the previous value  toString public String toString() Returns the String representation of the current value.  Overrides: 
toString in class Object
 Returns: the String representation of the current value  

    
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