Concurrency Utilities

The Java 2 platform includes a new package of concurrency utilities. These are classes that are designed to be used as building blocks in building concurrent classes or applications. Just as the collections framework simplified the organization and manipulation of in-memory data by providing implementations of commonly used data structures, the concurrency utilities simplify the development of concurrent classes by providing implementations of building blocks commonly used in concurrent designs. The concurrency utilities include a high-performance, flexible thread pool; a framework for asynchronous execution of tasks; a host of collection classes optimized for concurrent access; synchronization utilities such as counting semaphores; atomic variables; locks; and condition variables.

Using the concurrency utilities, instead of developing components such as thread pools yourself, offers a number of advantages:

In short, using the concurrency utilities to implement a concurrent application can help your program be clearer, shorter, faster, more reliable, more scalable, easier to write, easier to read, and easier to maintain.

The concurrency utilities includes:

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