Junior Java Developer Interview Questions

Junior Java Developer

Interviewed at mthree

3.7★

Sep 3, 2022

Q. Stack and queue Q. sql and dbms basics Q. java code Q. Java basics

Junior Java Developer

Interviewed at mthree

3.7★

May 12, 2023

Some technical and some mathematical questions

Junior Java Developer

Interviewed at mthree

3.7★

Mar 9, 2021

Why do you want to be part of this program? What is an Interface?

Junior Java Developer

Interviewed at Tata Consultancy Services

3.5★

Jan 10, 2019

What are the 4 foundations of Java?

Junior Java Developer

Interviewed at Tata Consultancy Services

3.5★

Jul 18, 2021

Tell me about urself and asked technical knowledge

Junior Java Developer

Interviewed at Tata Consultancy Services

3.5★

Nov 10, 2023

Tell me about yourself ?

Junior Java Developer

Interviewed at Tata Consultancy Services

3.5★

Jun 5, 2025

About projects done during my academics and internships (if any), along with basic questions on core technologies.

Junior Java Developer

Interviewed at Tata Consultancy Services

3.5★

Sep 2, 2025

Focus more on Java 8 and spring boot scenario ased questions

Junior Java Developer

Interviewed at Tata Consultancy Services

3.5★

Mar 2, 2022

Tell me about authentication and authorization

Junior Java Developer

Interviewed at Tata Consultancy Services

3.5★

Mar 31, 2022

Q1. Explain JDK, JRE and JVM? Q2. Explain public static void main(String args[]) in Java Q3. Why Java is platform independent? Q4. Why Java is not 100% Object-oriented? Q5. What are wrapper classes in Java? Q6. What are constructors in Java? Q7. What is singleton class in Java and how can we make a class singleton? Q8. What is the difference between Array list and vector in Java? Q9. What is the difference between equals() and == in Java? Q10. What are the differences between Heap and Stack Memory in Java?