Java Naming Convention

Java Naming Convention

🔷 What is a Naming Convention?

Naming conventions are a set of rules and guidelines used to name identifiers such as classes, methods, variables, and packages in a programming language. In Java, following naming conventions improves readability, maintainability, and ensures code is standardized and consistent.

🔷 Why Naming Conventions Matter?

• Makes the code more understandable to other developers.

• Reduces confusion and errors.

• Follows industry standards and improves collaboration.

• Required for professional and clean code design.

🔷 Java Naming Convention Rules

1. Class Names

• Should be nouns, in PascalCase (each word starts with a capital letter).

• Example: Student, BankAccount, CarEngine

2. Interface Names

• Use PascalCase, just like classes.

• Should usually describe capability or behavior.

• Example: Runnable, Serializable, Readable

3. Method Names

• Should be verbs or verb phrases.

• Use camelCase (first word lowercase, others capitalized).

• Example: getData(), calculateInterest(), printReport()

4. Variable Names

• Should be short yet meaningful.

• Use camelCase.

• Example: age, studentName, totalAmount

5. Constant Names

• Use uppercase letters with underscores between words.

• Example: PI, MAX_SPEED, DATABASE_URL

6. Package Names

• Always use lowercase letters to avoid conflicts.

• Often follow the reverse domain name convention.

• Example: com.companyname.projectname

📝 Best Practices:

• Always use meaningful names.

• Don’t use special characters or spaces.

• Avoid using single-letter names like x, y (except in loops).

• Follow consistent formatting throughout the project.

✅ Quick Summary: