Top 50 interview question for Experienced
Here are 50 interview questions divided by technology, along with brief answers for 10+ years of experience.
Easy to Medium questions topic wise.
Java
1. What are the main features of Java?
Answer: Platform independence, object-oriented, robust, secure, multithreaded, high performance.
2. Explain the difference between an interface and an abstract class in Java.
Answer: Interfaces can only have abstract methods and constants, while abstract classes can have both abstract and concrete methods, as well as instance variables.
3. What is the Java Collections Framework?
Answer: A set of classes and interfaces that implement commonly reusable collection data structures like lists, sets, and maps.
4. How does garbage collection work in Java?
Answer: Automatic memory management that identifies and deletes objects no longer needed by the program.
5. What is the difference between checked and unchecked exceptions?
Answer: Checked exceptions are checked at compile-time and must be handled, while unchecked exceptions occur at runtime.
