AtomicIntegerArray (Java Platform SE 7 )

java.lang.Object
- java.util.concurrent.atomic.AtomicIntegerArray

All Implemented Interfaces:

Serializable
```
public class AtomicIntegerArray
extends Object
implements Serializable
```
An int array in which elements may be updated atomically. See the java.util.concurrent.atomic package specification for description of the properties of atomic variables.

Since:

1.5

See Also:
Serialized Form

Constructor Summary

Constructors
Constructor and Description
`AtomicIntegerArray(int length)` Creates a new AtomicIntegerArray of the given length, with all elements initially zero.
`AtomicIntegerArray(int[] array)` Creates a new AtomicIntegerArray with the same length as, and all elements copied from, the given array.

Method Summary

Methods
Modifier and Type	Method and Description
`int`	`addAndGet(int i, int delta)` Atomically adds the given value to the element at index `i`.
`boolean`	`compareAndSet(int i, int expect, int update)` Atomically sets the element at position `i` to the given updated value if the current value `==` the expected value.
`int`	`decrementAndGet(int i)` Atomically decrements by one the element at index `i`.
`int`	`get(int i)` Gets the current value at position `i`.
`int`	`getAndAdd(int i, int delta)` Atomically adds the given value to the element at index `i`.
`int`	`getAndDecrement(int i)` Atomically decrements by one the element at index `i`.
`int`	`getAndIncrement(int i)` Atomically increments by one the element at index `i`.
`int`	`getAndSet(int i, int newValue)` Atomically sets the element at position `i` to the given value and returns the old value.
`int`	`incrementAndGet(int i)` Atomically increments by one the element at index `i`.
`void`	`lazySet(int i, int newValue)` Eventually sets the element at position `i` to the given value.
`int`	`length()` Returns the length of the array.
`void`	`set(int i, int newValue)` Sets the element at position `i` to the given value.
`String`	`toString()` Returns the String representation of the current values of array.
`boolean`	`weakCompareAndSet(int i, int expect, int update)` Atomically sets the element at position `i` 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

- Constructor Detail
  - AtomicIntegerArray
```
public AtomicIntegerArray(int length)
```
    Creates a new AtomicIntegerArray of the given length, with all elements initially zero.
    
    Parameters:
    length - the length of the array
  - AtomicIntegerArray
```
public AtomicIntegerArray(int[] array)
```
    Creates a new AtomicIntegerArray with the same length as, and all elements copied from, the given array.
    
    Parameters:
    array - the array to copy elements from
    
    Throws:
    
    NullPointerException - if array is null
- Method Detail
  - length
```
public final int length()
```
    Returns the length of the array.
    
    Returns:
    the length of the array
  - get
```
public final int get(int i)
```
    Gets the current value at position i.
    
    Parameters:
    i - the index
    
    Returns:
    the current value
  - set
```
public final void set(int i,
       int newValue)
```
    Sets the element at position i to the given value.
    
    Parameters:
    i - the index
    newValue - the new value
  - lazySet
```
public final void lazySet(int i,
           int newValue)
```
    Eventually sets the element at position i to the given value.
    
    Parameters:
    i - the index
    newValue - the new value
    Since:
    
    1.6
  - getAndSet
```
public final int getAndSet(int i,
            int newValue)
```
    Atomically sets the element at position i to the given value and returns the old value.
    
    Parameters:
    i - the index
    newValue - the new value
    
    Returns:
    the previous value
  - compareAndSet
```
public final boolean compareAndSet(int i,
                    int expect,
                    int update)
```
    Atomically sets the element at position i to the given updated value if the current value == the expected value.
    
    Parameters:
    i - the index
    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 final boolean weakCompareAndSet(int i,
                        int expect,
                        int update)
```
    Atomically sets the element at position i 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:
    i - the index
    expect - the expected value
    update - the new value
    
    Returns:
    true if successful.
  - getAndIncrement
```
public final int getAndIncrement(int i)
```
    Atomically increments by one the element at index i.
    
    Parameters:
    i - the index
    
    Returns:
    the previous value
  - getAndDecrement
```
public final int getAndDecrement(int i)
```
    Atomically decrements by one the element at index i.
    
    Parameters:
    i - the index
    
    Returns:
    the previous value
  - getAndAdd
```
public final int getAndAdd(int i,
            int delta)
```
    Atomically adds the given value to the element at index i.
    
    Parameters:
    i - the index
    delta - the value to add
    
    Returns:
    the previous value
  - incrementAndGet
```
public final int incrementAndGet(int i)
```
    Atomically increments by one the element at index i.
    
    Parameters:
    i - the index
    
    Returns:
    the updated value
  - decrementAndGet
```
public final int decrementAndGet(int i)
```
    Atomically decrements by one the element at index i.
    
    Parameters:
    i - the index
    
    Returns:
    the updated value
  - addAndGet
```
public final int addAndGet(int i,
            int delta)
```
    Atomically adds the given value to the element at index i.
    
    Parameters:
    i - the index
    delta - the value to add
    
    Returns:
    the updated value
  - toString
```
public String toString()
```
    Returns the String representation of the current values of array.
    
    Overrides:
    
    toString in class Object
    
    Returns:
    the String representation of the current values of array

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For further API reference and developer documentation, see Java SE Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
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Class AtomicIntegerArray

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

AtomicIntegerArray

AtomicIntegerArray

Method Detail

length

get

set

lazySet

getAndSet

compareAndSet

weakCompareAndSet

getAndIncrement

getAndDecrement

getAndAdd

incrementAndGet

decrementAndGet

addAndGet

toString