Static keyword in Java

static variables and methods belong to their class and not to a specific object.

• object with reference john assigning the value for static variable address
• object with reference smith to accessing the static variable and getting the value that was assigned by john. This example shows that static members are kind of global for all objects.
• The correct way of using the static members is by class name.

• Now it makes sense when used with the class name. It shows that address is property of the class.

The classes which consist of static methods are usually helper classes and they do not serve as data type and we do not create an object from them(for example java.util.Arrays and java.util.Math). There are many examples of hybrid classes that have static and instance members together.

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This article is part of the series of articles to learn Java programming language from Tech Lead Academy:
Introduction to programming 
OS, File, and File System
Working with terminal 
Welcome to Java Programming Language
Variables and Primitives in Java
Convert String to numeric data type
Input from the terminal in Java
Methods with Java
Java Math Operators and special operators
Conditional branching in Java
Switch statement in Java
Ternary operator in Java
Enum in Java
String class and its methods in Java
Loops in Java
Access modifiers in Java
Static keyword in Java
The final keyword in Java
Class and Object in Java
Object-Oriented Programming in Java
OOP: Encapsulation in Java
OOP: Inheritance in Java
OOP: Abstraction in Java
OOP: Polymorphism in Java
The method Overriding vs Overloading in Java
Array in Java
Data Structures with Java
Collection framework in Java
ArrayList in Java
Set in Java
Map in Java
Date and Time in Java
Exception in Java
How to work with files in Java
Design Patterns
Generics in Java
Multithreading in java
Annotations in Java
Reflection in Java
Reflection & Annotations - The Powerful Combination
Run terminal commands from Java
Lambda in Java
Unit Testing in Java
Big O Notation for coding interviews
Top Java coding interview questions for SDET