Question

What is a variable in Java programming language?

Hint:

A variable in Java holds a value and must be declared with a type before use.

Answer 1

In Java, a variable is a named memory location used to store data that can be changed during the program’s execution.
Every variable in Java must be declared with a data type, which determines the kind of values it can hold.
For example, int age = 25; declares a variable named age of type integer, initialized with the value 25.
Variables help manage data within a program by allowing developers to access and manipulate values efficiently.
They can be of various types: primitive (int, char, boolean, etc.) or reference types (objects, arrays, etc.).
Variables must be declared before use, and they follow strict rules related to scope, type, and naming.