"Multithreading implementation Scenario three: Implementing Callable Interface"

How to implement multithreading three:

A: Create a thread pool object that controls the creation of several thread objects.

public static Executorservice newfixedthreadpool (int nthreads)

B: Do a class to implement the callable interface.

C: Call the following method to

Future<?> Submit (Runnable Task)

<T> future<t> Submit (callable<t> Task)

D: I'm going to end it, okay?

OK.

 Packagecom.test;Importjava.util.concurrent.Callable; Public classMycallableImplementsCallable<integer> {    Private intNumber ;  PublicMycallable (intNumber ) {         This. Number =Number ; } @Override PublicInteger Call ()throwsException {intsum = 0;  for(intx=1;x<=number;x++) {sum+=x; }        returnsum; }}

 Packagecom.test;Importjava.util.concurrent.ExecutionException;ImportJava.util.concurrent.ExecutorService;Importjava.util.concurrent.Executors;Importjava.util.concurrent.Future; Public classCallabletest { Public Static voidMain (string[] args)throwsinterruptedexception, executionexception {/**To create a thread pool object*/Executorservice Pool= Executors.newfixedthreadpool (2); /**can execute Runnable object or thread represented by callable object*/ Future<Integer> f1 = Pool.submit (NewMycallable (100)); Future<Integer> F2 = Pool.submit (NewMycallable (200)); /**V get ()*/Integer I1=F1.get (); Integer I2=F2.get ();        System.out.println (I1);        System.out.println (I2); /**End*/Pool.shutdown (); }}

Operation Result:

505020100

"Multithreading implementation Scenario three: Implementing Callable Interface"