Java Coding Standards

Java Coding Standards

In this tutorial, we are going to discuss about Java coding standards. Java coding standards are a set of guidelines and conventions that developers follow when writing Java code. These standards help improve code quality, readability, maintainability, and consistency across projects and teams.

Java Coding Standards
  • Whenever we are writing the code it is highly recommended to follow coding standards.
  • Whenever we are writing any component it’s name should reflect the purpose of that component (Functionality)
  • The main advantage of this approach is readability and maintainability of the code will be improved.
Coding Standards For classes

Usually class names are nouns. Should starts with upper case letter and if it contains multiple words every inner word starts with upper case letter.

E.g

Employee
Student
Account
String
StringBuffer
Coding Standards For Interfaces

Usually interface names are adjectives. Should starts with upper case letter and if it contains multiple words every inner word starts with upper case letter.

E.g

Runnable
Clonable
Movable
Serializable
Coding Standards For Methods

Usually method names are either verbs or verb noun combination. Should starts with lower case letter and if it contains multiple words every inner word starts with upper case letter.

E.g

get()
run()
sleep()
wait()
getName()
setNumber()
Coding Standards For Variables

Usually variable names are nouns. Should starts with lower case letter and if it contains multiple words every inner word starts with upper case letter.

E.g

name
rollno
mobileNumber
salary
Coding Standards For Constants

Usually constants are nouns. Should contains only upper case letters and if it contains multiple words these words are separated with “_” symbol.

E.g

MAX_VALUE
MIN_VALUE
MAX_PRIORITY
MIN_PRIORITY
Java Bean Coding Standards

A Java bean is a simple Java class with private properties (variables) and public getter and setter methods.

E.g

public class Employee {
   private int empId;
   private String empName;
   private String empAddress;
   private String empDesignation;
   private String empEmail;
   public int getEmpId() {
      return empId;
   }
   public void setEmpId(int empId) {
      this.empId = empId;
   }

   public String getEmpName() {
      return empName;
   }
   public void setEmpName(String empName) {
      this.empName = empName;
   }

   public String getEmpAddress() {
      return empAddress;
   }
   public void setEmpAddress(String empAddress) {
      this.empAddress = empAddress;
   }

   public String getEmpDesignation() {
      return empDesignation;
   }
   public void setEmpDesignation(String empDesignation) {
      this.empDesignation = empDesignation;
   }

   public String getEmpEmail() {
      return empEmail;
   }
   public void setEmpEmail(String empEmail) {
      this.empEmail = empEmail;
   }
}
Syntax for setter method

The method name should be prefix with “set”. Compulsory the method should take some argument and return type should be void.  It should be public method.

Syntax for getter method

The method name should be prefix with “get”. Compulsory the method should be no argument and return type should not be void.  It should be public method.

Note

For boolean property the getter method can be starts with either “get” or “is” but recommend to use “is”. 

Coding Standards For Listeners

Case 1 : Register a listener 

  • Method name should be start with “add”
  • After add whatever we are taking the argument should be same

E.g

addMyActionListener(MyActionListener mal)

Case 2 : Unregister a listener 

  • Method name should be start with “remove”
  • After add whatever we are taking the argument should be same

E.g

removeMyActionListener(MyActionListener mal)

That’s all about Java Coding Standards. If you have any queries or feedback, please write us at contact@waytoeasylearn.com. Enjoy learning, Enjoy Java.!!

Java Coding Standards
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