FULL PRODUCT VERSION :


ADDITIONAL OS VERSION INFORMATION :
Windows 7 64 bit

A DESCRIPTION OF THE PROBLEM :
For example, the class below generates unique identifiers local to each thread. A thread's id is assigned the first time it invokes UniqueThreadIdGenerator.getCurrentThreadId() and remains unchanged on subsequent calls.

 import java.util.concurrent.atomic.AtomicInteger;

 public class UniqueThreadIdGenerator {

     private static final AtomicInteger uniqueId = new AtomicInteger(0);

     private static final ThreadLocal < Integer > uniqueNum =
         new ThreadLocal < Integer > () {
             @Override protected Integer initialValue() {
                 return uniqueId.getAndIncrement();
         }
     };
 
     public static int getCurrentThreadId() {
         return uniqueId.get(); /*** Should be uniqueNum.get() ***/
     }
 } // UniqueThreadIdGenerator




REPRODUCIBILITY :
This bug can be reproduced always.