Top 25 Java Best Practices for Beginners (2025 Edition)

Hello everyone, Ramesh here. Welcome to one more productive guide on using Best Practices in real-time projects. I explained 25 best practices in this guide for beginners, each illustrated with “Avoid” and “Better” examples, to guide Java developers toward writing more efficient, maintainable, and reliable code.

1. Use Meaningful Variable Names

Avoid: Using unclear or generic variable names.

int a = 10;

Better: Use descriptive names that convey purpose.

int numberOfEmployees = 10;

Explanation: Descriptive names make code easier to read and understand.

2. Follow Java Naming Conventions

Avoid: Ignoring Java naming conventions.

String FirstName;
int orderamount;

Better: Follow Java’s standard naming conventions.

String firstName;
int orderAmount;

Explanation: Following standard conventions improves readability and consistency.

3. Minimize Variable Scope

Avoid: Declaring variables before they are needed.

int result;
for (int i = 0; i < 100…