Executors

ThreadPoolExecutor的构造函数：

public ThreadPoolExecutor(int corePoolSize,
                          int maximumPoolSize,
                          long keepAliveTime,
                          TimeUnit unit,
                          BlockingQueue<Runnable> workQueue,
                          ThreadFactory threadFactory,
                          RejectedExecutionHandler handler){
                          。。。
}

CachedThreadPool：

public static ExecutorService newCachedThreadPool(){
    return new ThreadPoolExecutor(0, Integer.MAX_VALUE,
                                  60L, TimeUnit.SECONDs,
                                  new SynchronousQueue<Runnable>());

public static ExecutorService newCachedThreadPool(ThreadFactory tf){
    return new ThreadPoolExecutor(0, Integer.MAX_VALUE,
                                  60L, TimeUnit.SECONDs,
                                  new SynchronousQueue<Runnable>(),
                                  tf);

FixedThreadPool:

public static ExecutorService newFixedThreadPool(int nThreads){
    return new ThreadPoolExecutor(nThreads, nThreads,
                                  0L, TimeUnit.MILLISECONDS,
                                  new LinkedBlockingQueue<Runnable>());
}

public static ExecutorService newFixedThreadPool(int nThreads, ThreadFactory tf){
    return new ThreadPoolExecutor(nThreads, nThreads,
                                  0L, TimeUnit.MILLISECONDS,
                                  new LinkedBlockingQueue<Runnable>(),
                                  tf);
}