Example of AtomicReference in Java
December 25, 2012
1. AtomicReference belongs to the package java.util.concurrent.atomic. 2.
AtomicReference is available from jdk1.5. 3. The object of
AtomicReference is created with one reference. 4.
compareAndSet> method sets the value of reference checking the current values first. 5.
set method sets the reference without checking any condition.
package com.concretepage;
import java.util.concurrent.atomic.AtomicReference;
public class AtomicReferenceTest {
AtomicReference<String> ar= new AtomicReference<String>("ref");
class AddThread implements Runnable{
@Override
public void run() {
//if current reference is "ref" then it changes as newref
ar.compareAndSet("ref","newref");
// sets the new reference without any check
ar.set("reference");
//sets new value and return the old value
String s= ar.getAndSet("reference1");
System.out.println(s);
}
}
public static void main(String... args){
new Thread(new AtomicReferenceTest().new AddThread()).start();
new Thread(new AtomicReferenceTest().new AddThread()).start();
}
}
