| AtomicInteger | java.util.concurrent.atomic |
This threadsafe class holds an
int value. It extends
java.lang.Number, but unlike the
Integer class, it is mutable. Access the
int value with the get( )
method and the various methods inherited from
Number. You can set the value with the
set( ) method or through various atomic methods.
In addition to the basic compareAndSet( ) and
weakCompareAndSet( ) methods, this class defines
methods for atomic pre-increment, post-increment, pre-decrement and
post-decrement operations as well as generalized addAndGet(
) and getAndAdd( ) methods.
addAndGet( ) atomically adds the specified amount
to the stored value and returns the new value. getAndAdd(
) atomically returns the current value and then adds the
specified amount to it.
Figure 16-98. java.util.concurrent.atomic.AtomicInteger
 public class AtomicInteger extends Number implements Serializable {
// Public Constructors
public AtomicInteger ( );
public AtomicInteger (int initialValue );
// Public Instance Methods
public final int addAndGet (int delta );
public final boolean compareAndSet (int expect , int update );
public final int decrementAndGet ( );
public final int get ( );
public final int getAndAdd (int delta );
public final int getAndDecrement ( ); default:0
public final int getAndIncrement ( ); default:-1
public final int getAndSet (int newValue );
public final int incrementAndGet ( );
public final void set (int newValue );
public final boolean weakCompareAndSet (int expect , int update );
// Public Methods Overriding Number
public double doubleValue ( );
public float floatValue ( );
public int intValue ( );
public long longValue ( );
// Public Methods Overriding Object
public String toString ( );
}
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