ThreadLocal<T>

CountDownLatch

Semaphore (信号量 acquire, release操作)

CyclicBarrier (栅栏 用法参考 )

Exchanger

Runnable

Callable

Future

FutureTask

ConcurrentHashMap<T, V>

Executor

ExecutorService

CompletionService<T>

ExecutorCompletionService<T>

Timer

TimerTask

ScheduledThreadPoolExecutor

BlockingQueue

BlockingDeque

LinkedBlockingQueue