將創建線程的類轉換爲服務

我有這個創建線程的class，但我想將class轉換爲Service，希望它不會在方向更改時被破壞。將創建線程的類轉換爲服務

這裏是類：

public class Getter { 

    private final String ip; 
    private final int amount, poolSize; 
    private Vector<Integer> results = new Vector<Integer>(); 
    private final ExecutorService es; 
    private Collection<Future<?>> futures = new LinkedList<Future<?>>(); 


    public Getter(String ip, int amount, int poolSize) { 
     this.ip = ip; 
     this.amount = amount; 
     this.poolSize = poolSize; 
     es = Executors.newFixedThreadPool(this.poolSize); 

    } 

    public boolean working() { 
     boolean work = false; 
     for (Future<?> future : futures) { 
      if (!future.isDone()) { 
       work = true; 
      } 
     } 
     return work; 
    } 

    public Vector<Integer> getResults() { 
     Collections.sort(results); 
     return results; 
    } 

    public int threads(){ 
     return poolSize; 
    } 

    public void start() { 

     for (int i = 0; i <= amount; i++) { 
      futures.add(es.submit(new Get(ip))); 
     } 

     es.shutdown(); 

    } 

    public void stop(){ 
     for (Future<?> future : futures) { 
      future.cancel(true); 
     } 
    } 

    private class Get implements Runnable { 

     private String ip; 

     private Get(String ip) { 
      this.ip = ip; 
     } 

     public void run() { 
      try { 
       // network stuff 
       // adds result to results Vector. 
      } catch (Exception ex) { 

      } 
     } 
    }          
}

所以這是class可能轉化爲Service所以它會在後臺運行，不管是什麼，一旦它開始了嗎？

來源

2012-08-16 Rohit Malish