Java Tutorials and Learning Guides
Use these tutorials to understand a topic, then follow the included links to practice it.
Latest Java guides
- Java Roadmap 2026: Beginner-to-Job-Ready Learning Path — A step-by-step Java roadmap for 2026. Learn syntax, OOP, collections, multithreading, and Spring Boot — with free practice problems for every stage.
- Java vs Python in 2026: Which Should a Beginner Learn First? — Java vs Python compared honestly for beginners in 2026. Syntax, jobs, salary, learning curve, and which language to pick based on your goals.
- How to Learn DSA in Java: A Practical 2026 Guide — Learn data structures and algorithms in Java the right way. Topic order, practice problems, time complexity tips, and a 12-week DSA plan.
- Top 50 Java Interview Questions for 2026 (with Answers) — The 50 Java interview questions you must know in 2026. Covers core Java, OOP, collections, multithreading, and JVM internals — with concise answers.
- 10 Mistakes Every Java Beginner Makes (and How to Fix Them) — The 10 most common mistakes Java beginners make in 2026 — from == on Strings to ignoring null safety. Fix them now and write better code.
- Java Arrays — Complete Tutorial with 15 Practice Problems — Master Java arrays in one read. Declaration, initialization, traversal, 2D arrays, common algorithms, and 15 practice problems with solutions.