Concurrency Utilities in JDK 1.5 (Tiger)

http://www.cs.umd.edu/class/spring2006/cmsc433/lectures/util-concurrent.pdf

a slide summarizing concurrency changes in java 1.5

w classes and enhancements

Executors, Thread Pools, and Futures

• Concurrent collections: Queues, Blocking

Queues, ConcurrentHashMap

• Locks and Conditions

• Synchronizers: Semaphores, Barriers, etc.

• Atomic Variables

Low-level compare-and-set operation

• Other enhancements

Nanosecond-granularity timing

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class WebServer {

Executor pool =

Executors.newFixedThreadPool(7);

public static void main(String[] args) {

ServerSocket socket = new ServerSocket(80);

while (true) {

final Socket connection = socket.accept();

Runnable r = new Runnable() {

public void run() {

handleRequest(connection);

}

};

pool.execute(r);

}

}