2025 - Noel Kamphoa

How to Override the hashCode Method Properly in Java

Discover how the hashCode method in Java works, its contract with equals, and why proper overriding is crucial for collections.

Learn how the equals method in Java works, why to override it, and the difference between Object.equals and Objects.equals.

Compare StringBuilder vs StringBuffer in Java. Learn key differences, performance, thread safety, and best use cases with examples.

Discover how to use StringBuffer in Java for thread-safe string manipulation, with examples, performance tips, and best practices.

Learn how to use StringBuilder in Java for efficient string manipulation, with examples, best practices, and performance tips.

Explore the two main types of polymorphism in Java—compile-time and runtime—to write flexible, maintainable, and scalable code.

Discover how method overloading in Java enables flexible code by allowing multiple methods with the same name but different parameters.

Discover how packages and imports in Java help organize code, avoid conflicts, and improve readability in your Java projects.

Learn how the instanceof keyword in Java ensures safe type checking, prevents errors, and supports robust object-oriented programming.

Learn how to use the super keyword in Java to access parent class fields, methods, and constructors for clear, maintainable code.