𝐉𝐚𝐯𝐚 𝐈𝐧𝐭𝐞𝐫𝐯𝐢𝐞𝐰 𝐐𝐮𝐞𝐬𝐭𝐢𝐨𝐧𝐬 𝐟𝐨𝐫 𝐅𝐫𝐞𝐬𝐡𝐞𝐫𝐬 𝐭𝐨 𝐂𝐫𝐚𝐜𝐤 𝐭𝐡𝐞 𝐍𝐞𝐱𝐭 𝐉𝐨𝐛 𝐈𝐧𝐭𝐞𝐫𝐯𝐢𝐞𝐰

1. What is Java?
2. What are the features of Java?
3. What are the OOP concepts?
4. What is data encapsulation, and why is it useful?
5. What is polymorphism?
6. What are the types of polymorphism, and how do they differ?
7. What does an interface in Java refer to?
8. What is a class in Java?
9. What is a Java object?
10. What is a singleton class, and how can it be used?
11. What is a constructor in Java?
12. What does the term constructor overloading mean?
13. How are non-primitive variables used in Java?
14. In Java, what is a static variable?
15. What are Java data types, and how are they grouped?
16. How do you define primitive data types and describe each by size and description?
17. What do the terms autoboxing and unboxing mean in Java?
18. What are wrapper classes in Java?
19. What is inheritance in Java?
20. What types of inheritance does Java support?
21. What is Java exception handling?
22. What are the differences between unchecked exceptions, checked exceptions, and errors?
23. What are loops in Java?
24. What are the types of loops in Java, and how are they used?
25. What is an infinite loop?
26. What is the difference between the continue and break statement?
27. What is the entry point in Java, and how is it written?
28. In Java, what’s the purpose of static methods and static variables?
29. How do you use, call, and access a static method in Java?
30. How do you use, call, and access a non-static method in Java?

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