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AtomicInteger ai = new AtomicInteger(1);
Based on 337 examples
public class AtomicInteger extends Number implements Serializable
An {@code int} value that may be updated atomically. See the {@link java.util.concurrent.atomic} package specification for description of the properties of atomic variables. An {@code AtomicInteger} is used in applications such as atomically incremented counters, and cannot be used as a replacement for an {@link java.lang.Integer}. However, this class does extend {@code Number} to allow uniform access by tools and utilities that deal with numerically-based classes.
Constructor Summary | |
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Creates a new AtomicInteger with initial value . |
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AtomicInteger(int initialValue) Creates a new AtomicInteger with the given initial value. |
Method Summary | |
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int |
addAndGet(int delta) Atomically adds the given value to the current value. |
boolean |
compareAndSet(int expect, int update) Atomically sets the value to the given updated value if the current value the expected value. |
int |
Atomically decrements by one the current value. |
double |
Returns the value of the specified number as a double .
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float |
Returns the value of the specified number as a float .
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int |
get() Gets the current value. |
int |
getAndAdd(int delta) Atomically adds the given value to the current value. |
int |
Atomically decrements by one the current value. |
int |
Atomically increments by one the current value. |
int |
getAndSet(int newValue) Atomically sets to the given value and returns the old value. |
int |
Atomically increments by one the current value. |
int |
intValue() Returns the value of the specified number as an int .
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void |
lazySet(int newValue) Eventually sets to the given value. |
long |
Returns the value of the specified number as a long .
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void |
set(int newValue) Sets to the given value. |
String |
toString() Returns the String representation of the current value. |
boolean |
weakCompareAndSet(int expect, int update) Atomically sets the value to the given updated value if the current value the expected value. |
Methods inherited from class java.lang.Number |
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byteValue, doubleValue, floatValue, intValue, longValue, shortValue |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public AtomicInteger()
public AtomicInteger(int initialValue)
initialValue
- the initial valueMethod Detail |
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public final int addAndGet(int delta)
delta
- the value to addpublic final boolean compareAndSet(int expect, int update)
expect
- the expected valueupdate
- the new valuepublic final int decrementAndGet()
public double doubleValue()
doubleValue
in class Number
public float floatValue()
floatValue
in class Number
public final int get()
public final int getAndAdd(int delta)
delta
- the value to addpublic final int getAndDecrement()
public final int getAndIncrement()
public final int getAndSet(int newValue)
newValue
- the new valuepublic final int incrementAndGet()
public int intValue()
intValue
in class Number
public final void lazySet(int newValue)
newValue
- the new valuepublic long longValue()
longValue
in class Number
public final void set(int newValue)
newValue
- the new valuepublic String toString()
toString
in class Object
public final boolean weakCompareAndSet(int expect, int update)
May fail spuriously and does not provide ordering guarantees, so is only rarely an appropriate alternative to {@code compareAndSet}.
expect
- the expected valueupdate
- the new value
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