Can static method contain non static variables?

A static method can only access static data members and static methods of another class or same class but cannot access non-static methods and variables.

Why we Cannot override static method?

Static methods cannot be overridden because they are not dispatched on the object instance at runtime. The compiler decides which method gets called. Static methods can be overloaded (meaning that you can have the same method name for several methods as long as they have different parameter types).

Why static method Cannot use this and super keyword?

A static method or, block belongs to the class and these will be loaded into the memory along with the class. This implies that to use “super” the method should be invoked by an object, which static methods are not. Therefore, you cannot use the “super” keyword from a static method.

Why we Cannot use this and super in static method?

What is a non static variable?

Any variable of a class which is not static is called non-static variable or an instance variable. A static variable acts as a global variable and is shared among all the objects of the class. A non-static variables are specific to instance object in which they are created.

Why we Cannot override final method?

Final methods cannot be overridden because the purpose of the “final” keyword is to prevent overriding. Final cannot be overridden because that is the purpose of the keyword, something that cannot be changed or overridden.

How can we use static variable in non-static method?

Yes, a static method can access a non-static variable. This is done by creating an object to the class and accessing the variable through the object. In the below example main is a static method which accesses variable a which is a non-static variable.

Why non-static variable cannot be referenced from a static method?

In this article, let’s discuss why non-static variable cannot be referenced from a static method. Static Method: A static method is a method that belongs to a class, but it does not belong to an instance of that class and this method can be called without the instance or object of that class.

Can a static method access non-static methods and fields?

A static method can access non-static methods and fields of any instance it knows of. However, it cannot access anything non-static if it doesn’t know which instance to operate on. class Test { int x; public static doSthStatically () { x = 0; //doesn’t work! } } Here the static method doesn’t know which instance of Test it should access.

Why non-static methods cannot be instantiated inside static methods in Java?

The logic behind it is we do not create an object to instantiate static method, but we must create an object to instantiate non-static method. So non-static method will not get object for its instantiation inside static method, thus making it incapable for being instantiated.

Is it possible to access a static variable from another class?

There is no problem with that because of static members i.e. both static variable and static methods belongs to a class and can be called from anywhere, depending upon their access modifier. For example, if a static variable is private then it can only be accessed from the class itself, but you can access a public static variable from anywhere.