Executor 알기- http://javacan.tistory.com/124

Learn_Executors.java

public class ArahanThreadExecutor {

	public static void main(String[] args) throws InterruptedException, ExecutionException {
		ExecutorService executor = Executors.newFixedThreadPool(1);
		Future taskTwo = executor.submit(new ArahansaThread("TaskTwo", 4));
		System.out.println("waiting...시작 !?");
		//============================
		if(taskTwo.get() == null) {
			System.out.println(" 태스크가 종료되었다. ");
		} else {
			// if it doesn't finished, cancel it
			taskTwo.cancel(true);
		}
		System.out.println("여기 위로==== 블락... ");
		executor.shutdown();
	}
}
class ArahansaThread implements Runnable{
	private String myName;
	private int count;
	ArahansaThread(String name, int newcount) {
		this.myName = name;
	    this.count = newcount;
	}
	@Override
	public void run() {
		// TODO Auto-generated method stub

		int sum = 0;
	    for (int i = 1; i <= this.count; i++) {
	    	sum = sum + i;
		    try {
		    	System.out.println(myName+" Thread :: "+ i);
				TimeUnit.SECONDS.sleep(1);
			} catch (InterruptedException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
	    }
	    System.out.println(myName + "이 종료됨");
	}
}