Chapter 2.1, Problem 1STQ

Program Plan Intro

Variables:

A memory space, which contains a data value, is called as variable.

• • The variable must be declared before it is used in the program, because Java programming language statically typed.

Syntax for variable declaration:

Datatype variableName1, variableName2;

Here,

• • The Datatype can be “int”, “double”, “float”, “long”, “Boolean”, and “String”.
• • The “variableName1” and “variableName2” is the name of the variable.
  • ○ Variable name should begin with a character, underscore (_) or dollar sign ($) and they should not start with a number.
• • “N” number of variables can be defined in a single declaration statement.