Multi-threaded development attention to the problem

• From thread to a meaningful name, so easy to find Bug
• Synchronization narrow range, thereby reducing lock contention, for example, the synchronized, should not try to use the sync block synchronization method
• Multi-use synchronization tool less wait () and notify (). First, CountDownLatch, CyclicBarrier, Semaphore Exchanger these synchronization classes and the simplified encoding operation, and a wait () and notify () is difficult to achieve complex control flow; secondly, the synchronization classes are best prepared and maintained by the enterprise, in the subsequent of the JDK will continue to optimize and improve.
• Use producers and consumers to achieve BlockingQueue
• Multi-purpose concurrent collections less synchronous collection, for example, should be used instead of Hashtable ConcurrentHashMap
• Use local variables and immutable classes to ensure thread safety
• Use a thread pool instead of directly creating a thread, it is because of the high cost of creating a thread, the thread pool can effectively use limited thread to start the task