Java – could ThreadLocal be useful?

So I just saw someone try to use a ThreadLocal < atomicinteger > in some java code

And it always seems useless: atomicinteger (from the Java. Util. Concurrent. Atomic package) is designed for multi-threaded access, and ThreadLocal makes each thread have its own value, so why even use it?

My question is: is ThreadLocal < atomicinteger > useful in any case

Solution

Yes, we may come up with a legal situation:

>At the beginning of each task, we need a thread local atomicinteger instance; > We continue to distribute this object among other threads, such as child threads forked by the main task thread

We cannot judge without evaluating the overall situation of this situation