jdk中的多线程 多线程

public final class ThreadUtil {

    public static ExecutorService newThreadPoolExecutor(int corePoolSize, int maximumPoolSize, long keepAliveTime,
        TimeUnit unit, BlockingQueue<Runnable> workQueue, String processName, boolean isDaemon) {
        return new ThreadPoolExecutor(corePoolSize, maximumPoolSize, keepAliveTime, unit, workQueue, newThreadFactory(processName, isDaemon));
    }

    public static ExecutorService newSingleThreadExecutor(String processName, boolean isDaemon) {
        return Executors.newSingleThreadExecutor(newThreadFactory(processName, isDaemon));
    }

    public static ScheduledExecutorService newSingleThreadScheduledExecutor(String processName, boolean isDaemon) {
        return Executors.newSingleThreadScheduledExecutor(newThreadFactory(processName, isDaemon));
    }

    public static ScheduledExecutorService newFixedThreadScheduledPool(int nThreads, String processName,
        boolean isDaemon) {
        return Executors.newScheduledThreadPool(nThreads, newThreadFactory(processName, isDaemon));
    }

    public static ThreadFactory newThreadFactory(String processName, boolean isDaemon) {
        return newGenericThreadFactory("Remoting-" + processName, isDaemon);
    }

    public static ThreadFactory newGenericThreadFactory(String processName) {
        return newGenericThreadFactory(processName, false);
    }

    public static ThreadFactory newGenericThreadFactory(String processName, int threads) {
        return newGenericThreadFactory(processName, threads, false);
    }

    public static ThreadFactory newGenericThreadFactory(final String processName, final boolean isDaemon) {
        return new ThreadFactory() {
            private AtomicInteger threadIndex = new AtomicInteger(0);

            @Override
            public Thread newThread(Runnable r) {
                Thread thread = new Thread(r, String.format("%s_%d", processName, this.threadIndex.incrementAndGet()));
                thread.setDaemon(isDaemon);
                return thread;
            }
        };
    }

    public static ThreadFactory newGenericThreadFactory(final String processName, final int threads,
        final boolean isDaemon) {
        return new ThreadFactory() {
            private AtomicInteger threadIndex = new AtomicInteger(0);

            @Override
            public Thread newThread(Runnable r) {
                Thread thread = new Thread(r, String.format("%s_%d_%d", processName, threads, this.threadIndex.incrementAndGet()));
                thread.setDaemon(isDaemon);
                return thread;
            }
        };
    }

    public static Thread newThread(String name, Runnable runnable, boolean daemon) {
        Thread thread = new Thread(runnable, name);
        thread.setDaemon(daemon);
        thread.setUncaughtExceptionHandler(new Thread.UncaughtExceptionHandler() {
            public void uncaughtException(Thread t, Throwable e) {

            }
        });
        return thread;
    }

    public static void shutdownGracefully(final Thread t) {
        shutdownGracefully(t, 0);
    }

    public static void shutdownGracefully(final Thread t, final long millis) {
        if (t == null)
            return;
        while (t.isAlive()) {
            try {
                t.interrupt();
                t.join(millis);
            } catch (InterruptedException e) {
                Thread.currentThread().interrupt();
            }
        }
    }

    public static void shutdownGracefully(ExecutorService executor, long timeout, TimeUnit timeUnit) {
        executor.shutdown();
        try {
            if (!executor.awaitTermination(timeout, timeUnit)) {
                executor.shutdownNow();
                if (!executor.awaitTermination(timeout, timeUnit)) {

                }
            }
        } catch (InterruptedException ie) {
            executor.shutdownNow();
            Thread.currentThread().interrupt();
        }
    }
}