Java Tutorials for Backend Engineers

Java JUnit 5 Tutorial: How to Generate Reports for Test Results

Learn how to generate JUnit 5 test reports for better CI/CD, debugging, and collaboration. Step-by-step guide with tools and tips.

Learn how to read and write CSV files in Java using Apache Commons CSV. Simplify data handling with this step-by-step CSV tutorial.

Learn what constructors are in Java, their types, and how they initialize objects. Master clean, efficient, and maintainable Java code.

Learn JUnit 5 with this complete guide. Explore annotations, assertions, test execution, and advanced features for modern Java apps.

Discover different ways to call a method in Java. From basic method calls to reflection and method references, this tutorial covers it all.

Learn Java BigDecimal for precise calculations. Explore creation, operations, rounding, comparisons, and best practices in this tutorial.

Learn Java data types in this beginner-friendly guide. Covers primitive, non-primitive types, type casting, and best practices for coding.

A focused guide to Java Formatter, String.format, and printf for readable logs, reports, and messages without formatting bugs in production code.

Learn to write CSV files in Java using OpenCSV, from setup to handling complex data, special characters, and following best practices.

Discover what abstract classes are in Java, how they work, and when to use them with examples, tips, and best practices for clean code.