V - 
       public abstract class AbstractFuture<V> extends java.lang.Object implements Future<V>
Future不允许取消的实现。 
      | Constructor and Description | 
|---|
AbstractFuture()  |  
          
| Modifier and Type | Method and Description | 
|---|---|
V |  
           get()  |  
          
V |  
           get(long timeout, java.util.concurrent.TimeUnit unit)  |  
          
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, waitaddListener, addListeners, await, await, await, awaitUninterruptibly, awaitUninterruptibly, awaitUninterruptibly, cancel, cause, getNow, isCancellable, isSuccess, removeListener, removeListeners, sync, syncUninterruptiblypublic V get() throws java.lang.InterruptedException, java.util.concurrent.ExecutionException
get ,界面 
            java.util.concurrent.Future<V> 
           java.lang.InterruptedException 
           java.util.concurrent.ExecutionException 
           public V get(long timeout, java.util.concurrent.TimeUnit unit) throws java.lang.InterruptedException, java.util.concurrent.ExecutionException, java.util.concurrent.TimeoutException
get ,界面 
            java.util.concurrent.Future<V> 
           java.lang.InterruptedException 
           java.util.concurrent.ExecutionException 
           java.util.concurrent.TimeoutException 
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