Core Java - Fundamentals IV (Coding Standards)

Classes (Nouns)

• Should start with uppercase, for multiple words inner words should start with uppercase.
• eg : Student, Customer, String,etc
• Throwable is a class but not a interface.

Interfaces (Adjectives)

• Should start with uppercase, for multiple words inner words should start with uppercase.
• Eg: Runnable, Serializable,Clonable,Movable etc

Methods (Verbs)

• Should start with lowercase, for multiple words inner words should start with uppercase i.e camelcase.
• eg: run(), step(), getName() etc.

Variables (Nouns)

• Should start with lowercase, for multiple words inner words should start with uppercase i.e camelcase.
• rollNumber, name,mobileNumber etc.

Constants (Nouns)

• Should be only uppercase, multiple words should be separated by '_'
• Also its recommended to use static and final modifiers.
• MIN_VALUE,MAX_VALUE etc.

Java Bean Coding Standards

• Simple java  class with private properties and public getters and setters.
• Could end with bean eg : "StudentBean".
• Setter should start with set ,with some argument and return type is void.
• Getter should start with get, with no argument and return type should not be void.
• For boolean property getter method should be prefixed with"is".
• For registering the listener we use add, and for de-registering we use remove as prefix.