💼 Java Interview Questions
Prepare for Java interviews with categorized Q&A covering Core Java, OOP, Collections, Multithreading, Java 8, Java 21, and real coding challenges — trusted by beginners to experienced engineers.
🎯 Top 25 Interview Questions
Cover the most commonly asked Java interview questions — ideal for college grads and freshers.
🕗 Java 8 Interview Q&A
Explore Lambdas, Streams, Optional, Functional Interfaces, Date-Time API, default & static methods.
🆕 Java 21 Interview Questions
Latest interview questions on Java 21 — Pattern Matching, Records, Virtual Threads & more.
🧠Coding Round Questions
Frequently asked coding challenges with detailed solutions — arrays, strings, and logic building.
🚨 Exception Handling Questions
Key concepts: Try-Catch, Error vs Exception, Custom Exceptions, best practices for robust code.
📦 Collections Interview Q&A
Differences between List, Set, Map, HashMap vs ConcurrentHashMap, fail-fast vs fail-safe & more.
⚙️ Multithreading Interview Questions
Thread lifecycle, Executors, Locks, Synchronization, Race Conditions, Future, and Virtual Threads.
❓ Frequently Asked Interview Questions
- Core Java Interview Questions for experienced developers
- OOP concepts and real-world design examples
- JVM and Garbage Collection interview questions
- Java 8 vs Java 21 — what’s asked in interviews?
- Live coding round preparation & problem solving
📺 Subscribe to Spring Java Lab on YouTube
Get video walkthroughs, hands-on coding, and step-by-step tutorials delivered fresh to your screen!
🔔 Visit Channel & Subscribe