Java Static Keyword Introduction
It is a non-access modifier Static keyword can be applied to an instance variable or method. Applying to an instance variable makes that variable as a class variable. Both primitive and reference [...]
Class (static) variables
Only instance variable can be marked with static keyword. Syntax: static variable declaration static data_type variableName; Where, is optional. Parameter and local variable cannot be marked with [...]
Class (static) methods
If you have a requirement where the method’s behavior is independent of the state of the object then you go for static method. Static methods have several restrictions: They can only invoke other [...]
Accessing static members
To access instance variable/ method we use dot operator on the reference variable of the class. For example, to access the name instance variable of Student class, we create a reference variable [...]
Static block
Static keyword can be applied to a block, { }, and they become static initialization block which runs only once when the class is first loaded by the JVM. This is used for initializing all the [...]
Static and Inheritance
Static members from superclass are not inherited to the sub class. Static methods cannot be overridden in the subclass. Same method can be redefined in the subclass, thus hiding the superclass [...]
Summary
Static keyword can be applied to instance variable, instance method and inner classes. There is only one copy of static variable and all objects share them. Static variables are loaded and [...]