Java Data Types and Operations
Java identifiers,variables, Numerical data types, Character data type and numeric operators.
Kindly note 2+3=5 not 4
= is called an assignment operator not the mathematical equals i.e
type variableName = value;
type- is one of Java's types eg int
variableName- eg num1
The equal sign is used to assign values to the variable.
int x=7 simply means variable x has been assignment value 7
Make sure that you choose descriptive names with straightforward meanings for the variables, constants, classes, and methods in your program. Names are case-sensitive. Listed below are the conventions for naming variables, methods, and classes.
Use lowercase for variables and methods. If a name consists of several words, combine them into one, making the first word lowercase and capitalizing the first letter of each subsequent word: for example areaOfCircle.
Capitalize the first letter of each word in a class name; for example, the class names ComputeArea.
Capitalize every letter in numbers that do not change, PI.
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