Summary Variable Declaration in JAVA

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Variable Declaration and Assignment
In programming, a variable is a named location used to store data in memory. Before
you can use a variable, you must declare it and assign a value to it.


Variable Declaration
To declare a variable, you need to specify its type and name. The general syntax is:

type variableName;


Here are some examples in Java:

int x;
double y;
char z;

Variable Assignment
To assign a value to a variable, you use the assignment operator ( = ). The general
syntax is:

variableName = value;


Here are some examples in Java:

x = 10;
y = 3.14;
z = 'a';

Initialization
You can also declare and assign a value to a variable in the same statement, which is
called initialization. The general syntax is:

type variableName = value;