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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. "

3,798 junior java developer interview questions shared by candidates

what is java? Basic Concepts: What is object-oriented programming (OOP)? Can you explain the four main principles of OOP? What is the difference between abstraction and encapsulation? Explain the concept of inheritance in Java. What is polymorphism, and how is it implemented in Java? Describe the difference between interface and abstract class in Java. Core Java: What are the main features introduced in Java 8? What is the difference between ArrayList and LinkedList? Explain the purpose of the finalize() method. What is the difference between == and .equals() in Java? How does exception handling work in Java? Can you explain try, catch, finally blocks?
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Junior Java Developer

Interviewed at Tata Consultancy Services

3.5★
Feb 27, 2024

what is java? Basic Concepts: What is object-oriented programming (OOP)? Can you explain the four main principles of OOP? What is the difference between abstraction and encapsulation? Explain the concept of inheritance in Java. What is polymorphism, and how is it implemented in Java? Describe the difference between interface and abstract class in Java. Core Java: What are the main features introduced in Java 8? What is the difference between ArrayList and LinkedList? Explain the purpose of the finalize() method. What is the difference between == and .equals() in Java? How does exception handling work in Java? Can you explain try, catch, finally blocks?

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