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JThreadKit contains some very valuable utilties for accelerating the development of multithreaded code.

The class SyncBoolean is a great tool for simplifying basic inter-thread communication. Threads in Java can signal each other with the wait-notify mechanism, but there can be challenges in implementing this safely and robustly...especially if wait-notify is used over and over in many places. SyncBoolean can help out with this common situation. It provides multithread-safe synchronized access to a boolean value and has great methods like waitUntilTrue(). With methods like this, one thread can be waiting for a specific condition while another threads does some task and then signals this condition by setting the boolean value. Check out the API documentation for SyncBoolean to learn more.

There is a whole subpackage dedicated to First-In-First-Out (FIFO) queues: com.jthreadkit.fifo. The class hierarchy is designed to allow for expansion and alternate implementations. For example, ObjectFIFO is an interface specifying the general contract for FIFO queues that hold generic Object references. There are many ways to implement this interface with difference performance characteristics. One implementation, ArrayObjectFIFO simply stores the references in a fixed-size array behind the scenes. To simplify the substitution of different implementations, developers can write code like this:

    ObjectFIFO fifo = new ArrayObjectFIFO();

There is a whole subpackage dedicated to extending Java's Collection API: com.jthreadkit.collection.