java安全并发处理的“套路"

1 synchronized Collections.SynchonrizedMap wait notify voliatile final

2 threadlocal

3 多实例

4 immutable class

5 java.concurrent.util: ReentrantLock ReentrantReadWriteLock CopyOnWriteArrayList BlockingQueue ConcurrentHashMap AtomicInteger AtomicStampedReference Executors FutureTask Callable。。。

6 避开多线程，单线程处理(NIO AIO)