java - Does an ExecutorService get garbage collected when out of scope? -

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I am asking this question because I am creating many executable services and I already have a memory leak There is a need to investigate, I think a recent change in the following code has really worsened, so I am trying to confirm what is happening: 

 < Code> @ FunctionalInterface Public Interface BaseConsumer Consumer & Lt; Path & gt; {@ Override default accepts zero (last path path) {string name = path.jet filename (). ToString (); Executor Services = Exporter. NaveSinglethread Exclorator (runnable -> gt; thread thread = new thread (runnable, "document id =" + name); thread .SetDemon (true); return thread;}); Future & lt ;? & Gt; Future = service.submit (() -> gt; baseAccept (path); return tap;}); Try {future.get (); } Grip (Prerupted Pre-Probe) {Thread.currentThread (). Interrupt (); } Hold (Execution Exception) {new runtime exception (ex); }} Zero base acquisition (last path path) throws exceptions; }   
 Then this  consumer & lt; Path & gt;  The second thread pool (usually) calls to N = 2 threads, I'm not sure it's relevant.  
 The question is whether the  Execution Service Service exits  the scope of  and  once gets collected garbage  the base consumer # Accepted  is finished?   
 
 
 
 Does the Execution Service exits service scope and accept  BaseConsumer once ()  is over?   
 Yes  
 In fact, the connected thread pool should also be collected in the trash ... in the end.  
  Executable service  which is built by  executor. An example of NewSingleThreadExecutor ()   is FinalizableDelegatedExecutorService . In that class there is  final ()  method, which calls the  shutdown ()  wrapped  ExecutorService  object provided all outstanding functions are actually When finished, the service object closes its thread pool.  
 (AAAI, this is not specified.) But this has been implemented according to the source code after Java 6. )  
 
 
 Adding {service.shutdown () to one end; } Future.get () Help in retrieving resources in the effort-grabbing around? (Not necessarily to collect garbage service objects).   
 Yes it does calling  shutdown ()  is due to the release of the outstanding tasks as well as the release is done, although this process begins immediately, though If you leave it to the garbage collector then it does not start until it is finally told.  
 Now if the resources were only "simple" Java objects, then it would not make any difference. But in this case, the resource you are retrieving is a Java thread, and it has Associate operating system resources (for example, a native thread), and is a non-trivial part of the out-of-the-hand memory. So maybe this is meaningful to do so.  
 But if you want to customize it, then you should build long term  executable service  objects, and it should share in many "consumer" examples.

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