Java provides a rich set of concurrency features that can help you write efficient, high-performance, and responsive applications. With the java.util.concurrent package, synchronized keyword and volatile keyword, you have a wide range of tools available to you for implementing concurrency in your Java applications.

The fork/join framework was designed to recursively split a parallelizable task into smaller tasks and then combine the results of each subtask to produce the overall result.

Java 5 provided the Executor framework and the idea of thread pools as a higher-level idea capturing the power of threads, which allows Java programmers to decouple task submission from task execution.

Evolving Java support for expressing concurrency