Naming conventions:
- It is recommended to follow Java Naming rules while naming classes, methods, variables, interfaces, constants etc.
- Java Source code become more readable and understandable with naming rules.
Class: Every word in identity starts with capital letter. Spaces not allowed
| String PrintStream NullPointerException FileNotFoundException ArrayIndexOutOfBoundsException |
Method: First word starts with Lower Case and From Second word, every word starts with capital letters. No spaces allowed.
| main( ) getName( ) getAccountHolderNumber( ) |
Variable: First word starts with Lower Case and From Second word, every word starts with capital letters. No spaces allowed
| int sum = 0 ; float shoeSize = 8.9 ; |
Constant variable : All letters should be in upper case, words separate with underscore(_)
| MIN_VALUE = 0; MAX_PRIORITY = 10; |
Package: package must represent with lower case letters.
| java, lang, io, util, sql, http, servlet… |
Abstract Class and Interface: Same as class
| Runnable (interface) InputStream (abstract class) |