It's not terribly clean, but you could use indexOf() and check if it returns -1. Better than breaking out a loop.

The Java Concurrency Utilities are high-level concurrency types that facilitate threading tasks especially on multicore systems. Part 1 of this introduction featured java.util.concurrent‘s Executor ...

With the increasingly complexity of concurrent applications, many developers find that Java’s low-level threading capabilities are insufficient to their programming needs. In that case, it might be ...