Example of AtomicIntegerArray in Java
December 25, 2012
1. AtomicIntegerArray belongs to the package java.util.concurrent.atomic.2. java.util.concurrent.atomic is an array of integer.
3. AtomicIntegerArray is thread- safe. The values of AtomicIntegerArray can be modified automatically in multi threaded environment.
4. AtomicIntegerArray is available in java from jdk1.5.
package com.concretepage;
import java.util.concurrent.atomic.AtomicIntegerArray;
public class AtomicIntegerArrayTest {
AtomicIntegerArray aia= new AtomicIntegerArray(10);
class AddThread implements Runnable{
@Override
public void run() {
//add the value 2 at index 1
aia.addAndGet(1,15);
//at index 0, if current value is 15, then 5 is added to current value
aia.compareAndSet(1,15,5);
System.out.println(aia.get(1));
}
}
class SubThread implements Runnable{
@Override
public void run() {
//decrements by 1 from current value at index 1
aia.decrementAndGet(1);
//weakly compare the first args to current value and sets
aia.weakCompareAndSet(1,14,20);
System.out.println(aia.get(1));
}
}
public static void main(String... args){
new Thread(new AtomicIntegerArrayTest().new AddThread()).start();
new Thread(new AtomicIntegerArrayTest().new SubThread()).start();
}
}
