Core Java Tutorials by Noel Kamphoa

The Arrays Class In 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.

Learn about ClassCastException in Java, common scenarios that trigger it, and best practices to avoid this runtime error in your code

Explore how Java's BigDecimal Class ensures precise calculations, avoiding pitfalls of floating-point arithmetic in various applications.