Home - News ( United States | United Kingdom | Italy | Germany ) - Football scores

Showing content from https://www.geeksforgeeks.org/java/java-naming-conventions/ below:

Naming Conventions in Java - GeeksforGeeks

Last Updated : 30 Jul, 2025

Writing clean, readable and maintainable code is essential, especially in large projects. Naming conventions play a key role by making the purpose of variables, classes, methods and constants clear. This article covers best practices for naming conventions in Java.

In Java, it is good practice to name classes, variables and methods name as what they are supposed to do instead of naming them randomly. Below are some naming conventions of the Java programming language. They must be followed while developing software in Java for good maintenance and readability of code. Java uses CamelCase as a practice for writing names of methods, variables, classes, packages and constants.

Camel's case in Java programming consists of compound words or phrases such that each word or abbreviation begins with a capital letter or first word with a lowercase letter, rest all with capital. Here in simpler terms, it means if there are two

Note:

• In package, everything is small even while we are combining two or more words in java
• In constants, we do use everything as uppercase and only '_' character is used even if we are combining two or more words in java

In Java, we follow certain rules for naming things like classes, methods, variables and more. These rules make the code more easier to read and understand. One important rule is called CamelCase. This means that when we have a long name made up of several words, we start with a small letter for the first word and use capital letters for the following words.

For example:

myVariableName

This way of naming helps keep the code clean and organized, especially when the project gets bigger.

• Class names should be nouns, in mixed cases with the first letter of each internal word capitalized. Interfaces names should also be capitalized just like class names.

Classes: class Student { }

class Integer {}

class Scanner {}

• Use whole words and must avoid acronyms and abbreviations.

Interfaces: Runnable

Remote

Serializable

Methods should be verbs, in mixed case with the first letter lowercase and with the first letter of each internal word capitalized.

public static void main(String [] args) {}

Note: As the name suggests the method is supposed to be primarily method which indeed it is as main() method in java is the method from where the program begins its execution.

Variable names should be short yet meaningful. 

Variable names should not start with underscore _ or dollar sign $ characters, even though both are allowed.

• Should be mnemonic i.e, designed to indicate to the casual observer the intent of its use.
• One-character variable names should be avoided except for temporary variables.
• Common names for temporary variables are i, j, k, m and n for integers; c, d and e for characters.

int[] marks;

double double answer,

Note: As the name suggests one stands for marks while the other for an answer be it of any e do not mind.

• Should be written in all uppercase, with words separated by underscores (e.g., MAX_SIZE, PI_VALUE)
• Common constants are found in classes like Float, Long, String, etc.

final double PI = 3.14159;
double num = PI;

• The prefix of a unique package name is always written in all-lowercase ASCII letters and should be one of the top-level domain names, like com, edu, gov, mil, net, org.
• Subsequent components of the package name vary according to an organization's own internal naming conventions.

java.util.Scanner ;
java.io.*;

As the name suggests in the first case we are trying to access the Scanner class from the java.util package and in other all classes(* standing for all) input-output classes making it so easy for another programmer to identify.

Note:

• For class, interfaces and constants, the first letter has to be uppercase.
• For method , variable and package_name, the first letter has to be lowercase.

RetroSearch is an open source project built by @garambo | Open a GitHub Issue

Search and Browse the WWW like it's 1997 | Search results from DuckDuckGo

HTML: 3.2 | Encoding: UTF-8 | Version: 0.7.4