java.util.concurrent.atomic
public class
public class
java.util.concurrent.atomic.AtomicReference
| java.lang.Object | ||
| java.util.concurrent.atomic.AtomicReference | Serializable | |
An object reference that may be updated atomically. See the java.util.concurrent.atomic package specification for description of the properties of atomic variables.
Summary
Public Constructors
| AtomicReference(V initialValue) | |||||
| Create a new AtomicReference with the given initial value. | |||||
| AtomicReference() | |||||
| Create a new AtomicReference with null initial value. | |||||
Public Methods
| final | boolean | compareAndSet(V expect, V update) | |||
| Atomically set the value to the given updated value if the current value == the expected value. | |||||
| final | V | get() | |||
| Get the current value. | |||||
| final | V | getAndSet(V newValue) | |||
| Set to the given value and return the old value. | |||||
| final | void | set(V newValue) | |||
| Set to the given value. | |||||
| String | toString() | ||||
| Returns the String representation of the current value. | |||||
| final | boolean | weakCompareAndSet(V expect, V update) | |||
| Atomically set the value to the given updated value if the current value == the expected value. | |||||
Methods inherited
from class
java.lang.Object
Details
Public Constructors
public AtomicReference(V initialValue)
Create a new AtomicReference with the given initial value.
Parameters
| initialValue | the initial value |
|---|
public AtomicReference()
Create a new AtomicReference with null initial value.
Public Methods
public final boolean compareAndSet(V expect, V update)
Atomically set 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.
public final V get()
Get the current value.
Returns
- the current value
public final V getAndSet(V newValue)
Set to the given value and return the old value.
Parameters
| newValue | the new value |
|---|
Returns
- the previous value
public final void set(V newValue)
Set to the given value.
Parameters
| newValue | the new value |
|---|
public String toString()
Returns the String representation of the current value.
Returns
- the String representation of the current value.