Learn Java programming tutorial lesson 2 - Variables and constants

What is a variable

Variables are places in the computer's memory where you store the data for a program. Each variable is given a unique name which you refer to it with.

Variable types

There are 3 different types of data that can be stored in variables. The first type is the numeric type which stores numbers. There are 2 types of numeric variables which are integer and real. Integers are whole numbers such as 1,2,3,...

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