Threads And Concurrency Questions
The Java Exchanger class is used for thread synchronization and communication. It provides a mechanism for two threads to exchange objects between them. Each thread can call the `exchange()` method to exchange an object with the other thread. If one thread calls `exchange()` before the other thread, it will block until the other thread also calls `exchange()`. This class is typically used when two threads need to synchronize and exchange data at a specific point in their execution.