Core Java Interview Questions

Core Java Interview Questions and Answers

This article covers all popular Core Java, String Handling, Java 8, multithreading, OOPs, exception handling, collections, and Java coding interview questions.

Go over all the key questions to improve your Java Interview performance. The questions will cover Java’s fundamentals, core, and advanced.

Core Java Interview Questions For Freshers

1. Explain the different forms of Polymorphism.
2. What is Encapsulation?
3. What is Inheritance?
4. What is Dynamic Binding?
5. What is the difference between Abstraction and Encapsulation?
6. How does Java implement polymorphism?
7. What are the principle concepts of OOPS?
8. What is Polymorphism?
9. What is runtime polymorphism or dynamic method dispatch?
10. What is method overloading?
11. What is Abstraction?
12. What is method overriding?

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Core Java Interview Questions for Experienced

1. Is it possible to override the main method?
2. What is an Interface?
3. How do you prevent a method from being overridden?
4. How to invoke a superclass version of an Overridden method?
5. What is the difference between method overloading and method overriding?
6. What is Super?
7. Can overloaded methods be overridden too?