Naming Conventions of the Some Identifiers

The common naming conventions applied to the various identifiers are displayed in the table below.

Variable

• It should begin with a lowercase letter.
• The special characters & (ampersand), $ (dollar), and should not be used as the first character (underscore).
• If the name is long, start it with a lowercase letter, then an uppercase letter, as in firstName, lastName.
• Avoid using variables with only one character, like x, y, or z.

public class Student {  

      int id; 

    // your code  

  } 

Class

• Class names should to be nouns with the initial letter of each internal word capitalised and in mixed case.
• you should use appropriate words, instead of acronyms.
• Attempt to keep your class names short and simple.

public class Student {  

    // your code  

  } 

Interface

• Interface should start with the uppercase letter
• you should use appropriate words, instead of acronyms.
• An adjective, such as Runnable, Remote, or ActionListener, should be used.

interface Printable {  

    // your code  

  } 

Method

• Methods should be verbs e.g main(), println().
• If the name is long, start it with a lowercase letter, then an uppercase letter, as in firstName, lastName. e.g getBackground();

 class Student {  

    void shape(){

    // your code  

      } 

  } 

Package

• Package should be a lowercase letter such as java, lang.
• Dots (.) should be used to separate words in names with multiple words, such as java.util.Scanner and com.sun.eng

 package com.dockertpoint; 

 class Student {  

    void shape(){

    // your code  

      } 

  } 

Constant

• It should be written in capital letters.
• Constants should have all capital letters and underscores ("_") between words.
• Constant may contain digits but not as the first letter.

 package com.dockertpoint; 

 class Student {  

    static final int MAX_FEE = 1800;

    // your code  

  } 

Naming Convention use in java

Instead than naming Java classes, variables, and methods at random, it is best practise to give them names that reflect what they are intended to achieve. The Java programming language's name standards are listed here. For excellent maintenance and readability of code, they must be complied with when creating Java programme. Java follows the CamelCase convention when naming methods, variables, classes, packages, and constants.