Java Interview Questions for Freshers
Preparing for your first Java interviews? This set is curated for freshers and early-career developers (0–2 years): the 31 questions that come up most for entry-level roles, each with a clear answer, example code and follow-ups.
31 Java questions
- 1What is REST API in Java?Intermediate
- 2What is the difference between heap and stack memory?Intermediate
- 3What is garbage collection in Java?Intermediate
- 4What is Spring Framework?Intermediate
- 5What is dependency injection in Java?Intermediate
- 6What is File Handling in Java?Intermediate
- 7What are Java Streams?Intermediate
- 8What is synchronization in Java?Intermediate
- 9What is multithreading in Java?Intermediate
- 10What is equals and hashCode contract?Intermediate
- 11How does HashMap work internally?Intermediate
- 12What are Collections in Java?Intermediate
- 13Difference between method overloading and overridingIntermediate
- 14What are Java OOP pillars in detail?Intermediate
- 15What is exception handling?Beginner
- 16What is an array in Java?Beginner
- 17What are loops in Java?Beginner
- 18What are conditional statements in Java?Beginner
- 19What is String in Java?Beginner
- 20What are Java data types?Beginner
- 21What is the main method in Java?Beginner
- 22What is JVM, JRE, and JDK?Beginner
- 23What is Object-Oriented Programming?Beginner
- 24What is Java and why is it used?Beginner
- 25Java Interview Question 5 (Free)Intermediate
- 26Java Interview Question 4 (Free)Beginner
- 27Java Interview Question 1 (Free)Beginner
- 28Java Interview Question 2 (Free)Intermediate
- 29Java Advanced Interview Question 8Intermediate
- 30Java Advanced Interview Question 7Beginner
- 31Java Advanced Interview Question 10Beginner
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Frequently asked questions
Which Java questions do freshers (0–2 years) get asked?
This page collects 31 Java interview questions aligned with freshers (0–2 years), ranging across the difficulty levels that match that experience band.
How do I prepare for a Java interview with my experience level?
Work through these questions in order, make sure you can explain each answer out loud, and pay attention to the real-world examples and follow-ups — interviewers at this level care as much about reasoning as the final answer.
Do the answers include code and examples?
Yes — answers include explanations, code examples where relevant, common mistakes to avoid and follow-up questions so you are ready for the full interview conversation.