Java Practice Lab: Practice Java Online

Java practice topics

• Practice Core Java Basics exercises — 26 problems
• Practice Control Flow exercises — 24 problems
• Practice Arrays exercises — 22 problems
• Practice Strings exercises — 19 problems
• Practice OOP Basics exercises — 24 problems
• Practice Inheritance exercises — 20 problems
• Practice Collections exercises — 22 problems
• Practice Exception Handling exercises — 24 problems
• Practice File I/O exercises — 24 problems
• Practice Data Structures & Algorithms exercises — 60 problems

Learn and run Java

Follow the Java Roadmap 2026 or browse 59 Java programming examples with output.