Executor线程池提交任务

ExecutorService service = Executors.newSingleThreadExecutor();  
        for (int i = 0; i < 4; i++) {  
            Runnable run = new Runnable() {  
                @Override  
                public void run() {  
                    System.out.println("thread start:"+this.hashCode());  
                    try {
						Thread.sleep(3000);
					} catch (InterruptedException e) {
						// TODO Auto-generated catch block
						e.printStackTrace();
					}
                    System.out.println("thread end:"+this.hashCode()); 
                }  
            };  
            service.execute(run);  
        }  
        service.shutdown();  
        try {
			service.awaitTermination(Long.MAX_VALUE, TimeUnit.DAYS);
		} catch (InterruptedException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}  
        System.out.println("all thread complete"); ExecutorService service = Executors.newSingleTh