How to use objects in a running class in another class in Java, for example.

1  Packagetimers;2 3 ImportJava.util.Timer;4 ImportJava.util.TimerTask;5 6 /*7 * Mainly want to use the object of this class in another class, how to use it? How to pass the same instance object8  */9  Public classTimerdemo {Ten      Public Static voidMain (string[] args) { OneTimer T =NewTimer (); AT.schedule (NewMyTask (t), 3000); -     } - } the  - classMyTaskextendsTimerTask {  //In order to use the T object in the main method, this instance must be passed through the constructor of the class where it is used.  -     PrivateTimer t; +  -      PublicMyTask () { +  A     } at  -      PublicMyTask (Timer t) { -          This. T =T; -     } -  - @Override in     //in this class you want to use T in the main class, and if it is created to represent another new object, it must be t in the main class so you need to pass the argument with the constructor of the class.  -      Public voidrun () { toSystem.out.println ("Java"); +         //The object is passed through the constructor in the execution, and the object is used in this method. - T.cancel (); the  *     } $}

How to use objects in a running class in another class in Java, for example.