1.What are the key features of Java?
2.What is JDK, JRE, and JVM?
3.Why is Java platform-independent?
4.What is the difference between primitive and non-primitive data types?
5.What is autoboxing and unboxing?
6.Explain typecasting in Java.
7.Stack vs. Heap – What’s the difference?
8.Difference between == and .equals() in Java.
9. What are static and instance variables?
10.Can a constructor be private?
11. Explain the static, final, this, and super keywords.
12. What is method overloading and method overriding?
13. Can we overload the main() method in Java?
14.What is a static block?
15. Can a Java class have multiple constructors?
16.What happens when we create an object in Java?
17.What is abstraction, and how is it implemented in Java?
18. Explain inheritance with an example.
19. What is the difference between an abstract class and an interface?
20. How does Java solve the diamond problem?
