Java Multithreaded Implementation Timer task

Volatile is a weak synchronization mechanism keyword, which can only realize the visible function in the synchronization mechanism, and cannot implement mutually exclusive access. When used on a variable's declaration, it means that when multiple threads get this variable, the data is up-to-date (the variable automatically updates the latest data).

Custom Scheduled Tasks
   Task Management Classes

 PackageCom.effectJava.Chapter3;ImportJava.util.concurrent.TimeUnit; Public classManagertask {Private  Static  BooleanIsmanagertaskend;  Public synchronized  Static voidSetismanagertaskend (Booleanflage) {Ismanagertaskend=Flage; }     Public synchronized Static BooleanIsismanagertaskend () {returnIsmanagertaskend; }//private static Mytimetask Timetask = new Mytimetask ();     Public Static voidMain (String ... args)throwsException {//To open a task thread        NewThread () {@Override Public voidrun () { while(true){                    if(Isismanagertaskend ()) {//The task thread is not turned onSetismanagertaskend (false); NewMytimetask (). Start ();        }}}}.start (); //Open Timetask TaskSetismanagertaskend (true); TimeUnit.SECONDS.sleep (1); //Close//Setismanagertaskend (FALSE); //Close TimetaskMytimetask.setflagestrue (true); TimeUnit.SECONDS.sleep (2); Mytimetask.setflagestrue (false); Setismanagertaskend (true); }}

Task Processing Class

 PackageCom.effectJava.Chapter3; Public classMytimetaskextendsthread{Private  volatile  Static Booleanflages; Private  Static  intcount; //Setting Visibility     Public Static   Booleanisflages () {returnflages; }     Public  Static   voidSetflagestrue (Booleanflage) {Flages=Flage; } @Override Public voidrun () { while(!isflages ()) {System.out.println ("Perform Tasks"); //Execute the Task code        }    }     Public  synchronized Static  intrecount () {returncount++; }     Public  synchronized Static  intGetCount () {returncount; }}

Java Multithreaded Implementation Timer task