Top 10 Java Interview Questions in 2023

Posted by Rajakumar N on February 20th, 2023

Here are ten potential Java interview questions for 2023:

1. What is the difference between JDK, JRE, and JVM in Java?
2. What is the difference between an abstract class and an interface in Java? When would you use one over the other?
3. What are the principles of Object-Oriented Programming, and how do they relate to Java?
4. What is the difference between a checked and an unchecked exception in Java? Give an example of each.
5. How would you handle concurrent access to a shared resource in Java? What tools would you use?
6. What is the difference between a String, a StringBuilder, and a StringBuffer in Java? When would you use one over the other?
7. What is the Java Collection Framework, and what are some of the data structures provided by it?
8. What is serialization in Java, and why is it important?
9. How do you implement a thread-safe singleton in Java?
10. What are the benefits and drawbacks of using the Java Stream API?

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