Java Concurrency Programming: callable, Future, and futuretask for turtle and rabbit races

1, not clear to see the blog http://www.cnblogs.com/dolphin0520/p/3949310.html

We use the code above to make a turtle-rabbit race.

 Packagecom.weiyuan.test;Importjava.util.concurrent.Callable;ImportJava.util.concurrent.Executor;ImportJava.util.concurrent.ExecutorService;Importjava.util.concurrent.Executors;Importjava.util.concurrent.Future; Public classMain { Public Static voidMain (string[] args)throwsException {//TODO auto-generated Method Stub        intCounttime = 4000;//total time for runningExecutorservice service = Executors.newfixedthreadpool (2); Task Tuzi=NewTask ("Rabbit", 500); Task Wugui=NewTask ("Turtle", 1000); Future<Integer> Rst1 =Service.submit (Tuzi); Future<Integer> Rst2 =Service.submit (Wugui); /*** The total length of the run is 4 seconds **/Thread.Sleep (counttime); /** Running time is up, remember to quit the thread **/Tuzi.setflag (false); Wugui.setflag (false); Integer NUM1=Rst1.get (); Integer num2=Rst2.get (); System.out.println ("Rabbit" + "Run" +num1+ "step"); System.out.println ("Turtle" + "Run" +num2+ "step"); /*** Close thread pool **/Service.shutdown (); }             Public Static classTaskImplementsCallable<integer>{        /*** Rabbits or turtles * time rabbits and turtles run times * Running time is big stop thread exit * Number of steps to run **/        PrivateString name; Private LongTime ; Private BooleanFlag =true; Private intStep = 0;  PublicTask (String name,LongTime ) {             This. Name =name;  This. Time =Time ; } @Override PublicInteger Call ()throwsException {//TODO auto-generated Method Stub             while(flag) {Thread.Sleep (time); Step++ ; }                        returnstep; }         PublicString GetName () {returnname; }         Public voidsetName (String name) { This. Name =name; }         Public LongGetTime () {returnTime ; }         Public voidSetTime (LongTime ) {             This. Time =Time ; }         Public BooleanIsflag () {returnFlag; }         Public voidSetflag (Booleanflag) {             This. Flag =Flag; }                            }}

The running result of the program is:

The rabbit ran 9 paces.
The turtle ran 5 paces.

Java Concurrency Programming: callable, Future, and futuretask for turtle and rabbit races