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+--- Thread: Java Interview Questions for Freshers - Top 20 Must Know (/java-interview-questions-for-freshers-top-20-must-know)
Java Interview Questions for Freshers - Top 20 Must Know - Admin - 03-22-2026
Java is the most popular language for campus interviews. Top questions:
1. What is JVM, JRE, and JDK?
2. Explain garbage collection in Java
3. String vs StringBuilder vs StringBuffer
4. What are access modifiers?
5. Explain exception handling (try-catch-finally)
6. What is the difference between == and .equals()?
7. HashMap vs HashTable vs ConcurrentHashMap
8. ArrayList vs LinkedList
9. What is multithreading? How to create threads?
10. Explain the Collections framework
11. What are generics in Java?
12. Explain final, finally, and finalize
13. What is serialization?
14. Lambda expressions and functional interfaces
15. Stream API basics
Practice writing Java code on paper without IDE support. Interviewers notice clean code habits.
RE: Java Interview Questions for Freshers - Top 20 Must Know - indian - 03-22-2026
Java remains the most popular language for campus interviews. Understanding JVM internals, Collections framework, and multithreading concepts is essential. Must-prepare list for freshers!
RE: Java Interview Questions for Freshers - Top 20 Must Know - mohan - 03-22-2026
Java remains the top choice for campus placements in India. The JVM, JRE, JDK differences and Collections framework questions come up in almost every interview. I'd especially focus on understanding HashMap internals, the difference between == and .equals(), and exception handling as these are tricky topics interviewers love to dig into. Also learn Java 8+ features like Streams, Lambda expressions, and Optional as modern interviews expect familiarity with these. Great list for freshers preparing for placements!