Java Archives - Noel Kamphoa

Creating Your First Java Application With IntelliJ IDEA

Learn how to create your first Java application using IntelliJ IDEA. Step-by-step guide for beginners to set up, code, and run your project.

Learn about JShell, Java's interactive REPL tool. Discover its features, benefits, and how it simplifies coding, testing, and learning Java.

Learn about the Arrays class in Java, its methods for sorting, searching, converting arrays to lists, and how to efficiently manipulate arrays

Discover how to use arrays and loops in Java to store, access, and process data efficiently, with practical examples and tips for beginners

Discover the exciting new features in Java 21, including virtual threads, record patterns, sequenced collections, KEM API, pattern matching..

Learn what causes UnfinishedStubbingException in Java, how to identify improper mock usage, and best practices to avoid this Mockito error.

Learn about the causes of InvalidUseOfMatchersException in Java, common mistakes with Mockito matchers, and how to fix them effectively

Disable wildcard imports in IntelliJ for cleaner code by adjusting import settings to show explicit classes.

Explore Java's sealed classes and interfaces, their uses, and how they enhance control over subclassing and improve code safety.

Learn how to use Java Records to simplify data modeling with immutable data, automatic method generation, and concise syntax in your apps.