Java Naming Conventions - Classes, Methods & Variables

📚 Java Basics•📖 8 min read•beginner

Java Naming Conventions - Classes, Methods & Variables

Learn standard Java naming conventions. Understand CamelCase, PascalCase, and SCREAMING_SNAKE_CASE best practices.

Last updated: 15 January 2024

Why Naming Conventions?

Following standard naming conventions makes your code readable and maintainable by others.

1. Classes and Interfaces

Use PascalCase (First letter of each word capitalized).

MyClass
Scanner
String
HelloWorld

2. Methods and Variables

Use camelCase (First letter lowercase, others capitalized).

myMethod()
calculateSum()
myVariable
firstName

3. Constants

Use SCREAMING_SNAKE_CASE (All uppercase with underscores).

MAX_VALUE
PI
DEFAULT_TIMEOUT

4. Packages

Use lowercase.

java.util
com.javacompiler.app