How to define a variable in Java?

In Java, you can define a variable using the following syntax:

variable name of data type;

For example, to define a variable of integer type, you can use the following statement:

Declare a variable named “num” of type integer.

To define multiple variables at the same time, you can separate them with commas:

Declare three integer variables: num1, num2, and num3.

It is also possible to assign an initial value to a variable when defining it, for example:

The variable named “num” has a value of 10.

In this example, the variable “num” is defined as an integer type and is given an initial value of 10.

It is important to note that variable names must follow certain naming conventions, such as not starting with a number or containing special characters. Variable names should be descriptive to make the code easier to read and understand.