Types of variables in java with examples

Variables are the containers for storing the data values or you can also call it a memory location name for the data.

Instance variable in java

Local variables in java

Variable in java example

Data types in java

How to declare variables in java example

Every variable has a:

• Data Type – The kind of data that it can hold. For example, int, string, float, char, etc.
• Variable Name – To identify the variable uniquely within the scope.
• Value – The data assigned to the variable.

There are three types of variables in Java – Local, Instance, and Static.

Example:

int age = 27; // integer variable having value 27

String name = "gfg" // string variable

How to Declare Java Variables?

We can declare variables in Java as pictorially depicted below:

From the image, it can be easily perceived that while declaring a variable, we need to take care of two things that are:

1. datatype: In Java, a data type define the type of data that a variable can hold. 
2. data_name: Name was given to the variable. 

In this way, a name can only be given to a memory location.

It can be assigned values in two ways: 

• Variable Initialization
• Assig
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