The question is in Java why can’t I define an abstract static method? for example abstract class foo { abstract void bar( ); // <– this is ok abstract static void bar2(); //<– this isn’t why? } 29 s 29 Poor language design. It would be much more effective to call directly a static abstract … Read more
I am wondering when to use static methods? Say if I have a class with a few getters and setters, a method or two, and I want those methods only to be invokable on an instance object of the class. Does this mean I should use a static method? Example: Obj x = new Obj(); … Read more
This question already has answers here: Difference between staticmethod and classmethod (33 answers) Closed 3 years ago. Could someone explain to me the meaning of @classmethod and @staticmethod in python? I need to know the difference and the meaning. As far as I understand, @classmethod tells a class that it’s a method which should be … Read more
Is it possible to have static methods in Python which I could call without initializing a class, like: ClassName.static_method() 1 11
The whole code is: public class ThreadLocalTest { ThreadLocal<Integer> globalint = new ThreadLocal<Integer>(){ @Override protected Integer initialValue() { return new Integer(0); } }; public class MyThread implements Runnable{ Integer myi; ThreadLocalTest mytest; public MyThread(Integer i, ThreadLocalTest test) { myi = i; mytest = test; } @Override public void run() { System.out.println(“I am thread:” + myi); … Read more
The basic paradigm in Java is that you write classes, and that those classes are instantiated. Instantiated objects (an instance of a class) have attributes associated with them (member variables) that affect their behavior; when the instance has its method executed it will refer to these variables. However, all objects of a particular type might … Read more
One rule-of-thumb: ask yourself “Does it make sense to call this method, even if no object has been constructed yet?” If so, it should definitely be static. So in a class Car you might have a method: double convertMpgToKpl(double mpg) …which would be static, because one might want to know what 35mpg converts to, even if nobody … Read more
