JAVA Naming Conventions

Java Naming Conventions

Packages:
Names should be in lowercase. With small projects that only have a few packages it's okay to just give them simple (but meaningful!) names:

     package mycalculator


Classes:
Names should be in CamelCase. Try to use nouns because a class is normally representing something in the real world:

   class Customer
   class Account

Interfaces:
 Names should be in CamelCase. They tend to have a name that describes an operation that a class can do:

   interface Comparable
   interface Enumerable

Note that some programmers like to distinguish interfaces by beginning the name with an "I":

   interface IComparable
   interface IEnumerable

Methods:
Names should be in mixed case. Use verbs to describe what the method does:

   void calculateTax()
    string getSurname()

Variables:
Names should be in mixed case. The names should represent what the value of the variable represents:

   string firstName
   int orderNumber

Constants: Names should be in uppercase.

   static final int DEFAULT_WIDTH
   static final int MAX_HEIGHT

Private:

Camel Case and prefix private variable with a “_”