Java Concurrency Programming (9) thread pool Fetch task execution results

1.1. Get execution Results

Use the callable interface provides easy access to task execution results.

 Executorservice executorservice = Executors.newfixedthreadpool (2 <Integer> future = Executorservice.submit (new   callable () {@Override  public  Integer call () throws   Exception { return   1;} });  try   {  int  ret = Future.get (); System.out.println ( "return:" + ret);}  catch   (interruptedexception e) {e.printstacktrace ();}  catch   (executionexception e) {e.printstacktrace ();}  
 

after the successful execution of the task is completed, the get () method of the future interface returns and obtains the return value of the call () method of the callable implementation class .

Return:1

Java Concurrency Programming (9) thread pool Fetch task execution results