This threadsafe class holds a boolean value. In addition to the get( ) and set( ) iterators, it provides atomic compareAndSet( ), weakCompareAndSet( ), and getAndSet( ) operations.

Figure 16-97. java.util.concurrent.atomic.AtomicBoolean

public class AtomicBoolean implements Serializable {
// Public Constructors
     public AtomicBoolean( );  
     public AtomicBoolean(boolean initialValue);  
// Public Instance Methods
     public final boolean compareAndSet(boolean expect, boolean update);  
     public final boolean get( );  
     public final boolean getAndSet(boolean newValue);  
     public final void set(boolean newValue);  
     public boolean weakCompareAndSet(boolean expect, boolean update);  
// Public Methods Overriding Object
     public String toString( );  
}