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Junior Java Developer Interview Questions

"Junior developers are often responsible for writing the more monotonous and simple code required by senior members of the development team. Because of this, interviews will be designed to test your knowledge of the fundamentals of Java so be prepared to answer technical questions that you likely came across in college. Data structures and algorithms will be heavily emphasised. A bachelor's degree or equivalent work experience is required. "

3,803 junior java developer interview questions shared by candidates

Q. What is the difference between static type language and dynamic type languages? Q What is a garbage collector? Q what is the function of the finally() method in java? Q What is stack and heap in memory? Q. What is the time performance of the following? Linked List Trees Stack and Queues Heaps Recursive Function – O(n) Fibbinoci ArrayList Hashtable -O(1) Binary Search - O(logn) Q What are the pillars of OOP? Q Difference between Abstract Class and Interface? Q Multiple inheritances in interfaces? Q What is Polymorphism?
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Junior Java Developer

Interviewed at General Dynamics Information Technology

3.9★
Feb 17, 2021

Q. What is the difference between static type language and dynamic type languages? Q What is a garbage collector? Q what is the function of the finally() method in java? Q What is stack and heap in memory? Q. What is the time performance of the following? Linked List Trees Stack and Queues Heaps Recursive Function – O(n) Fibbinoci ArrayList Hashtable -O(1) Binary Search - O(logn) Q What are the pillars of OOP? Q Difference between Abstract Class and Interface? Q Multiple inheritances in interfaces? Q What is Polymorphism?

N/A Brief project introduction 2. Why do we use Springboot? What are the advantages of Springboot over Spring MVC? 3.Spring MVC flow. 4. Why Microservice? Advantages of microservice. 5. Arraylist , linkedlist , iterators 6. Hashmap and it's internal implementation. 7. Difference between ABSTRACT CLASS AND INTERFACE 8. Difference between method overloading and overrriding.
avatar

Junior Java Developer

Interviewed at Accenture

3.7★
Apr 12, 2022

N/A Brief project introduction 2. Why do we use Springboot? What are the advantages of Springboot over Spring MVC? 3.Spring MVC flow. 4. Why Microservice? Advantages of microservice. 5. Arraylist , linkedlist , iterators 6. Hashmap and it's internal implementation. 7. Difference between ABSTRACT CLASS AND INTERFACE 8. Difference between method overloading and overrriding.

N/A Brief project introduction 2. Why do we use Springboot? What are the advantages of Springboot over Spring MVC? 3.Spring MVC flow. 4. Why Microservice? Advantages of microservice. 5. Arraylist , linkedlist , iterators 6. Hashmap and it's internal implementation. 7. Difference between ABSTRACT CLASS AND INTERFACE 8. Difference between method overloading and overrriding.
avatar

Junior Java Developer

Interviewed at Accenture

3.7★
Apr 12, 2022

N/A Brief project introduction 2. Why do we use Springboot? What are the advantages of Springboot over Spring MVC? 3.Spring MVC flow. 4. Why Microservice? Advantages of microservice. 5. Arraylist , linkedlist , iterators 6. Hashmap and it's internal implementation. 7. Difference between ABSTRACT CLASS AND INTERFACE 8. Difference between method overloading and overrriding.

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