1. Java Virtual Machine, 2. Are JavaScript and Java the same?, 3. Java Runtime Environment, 4. Java Development Kit, 5. What are the popular topics for Java Interview?, 6. What are the advanced Java Topics?, 7. Which class is the superclass of all classes?, 8. What is the method?, 9. What is the constructor?, 10. Difference between a Constructor and a Method?, 11. What is the difference between a local variable and an instance variable?, 12. What is Object Oriented Programming (OOP)?, 13. What is encapsulation and how did you use it?, 14. What is the concept of Abstraction?, 15. Difference between Abstraction and Encapsulation?, 16. Difference between Abstract Class and Interface?, 17. What is Polymorphism?, 18. What is Inheritance?, 19. Important terminology in Inheritance?, 20. Difference between Polymorphism and Inheritance, 21. Difference between method Overloading and method Overriding?, 22. What is immutable ?, 23. What is static binding vs dynamic/runtime binding?, 24. What is Access modifier and what are the different access modifiers?, 25. Difference between Public, Private and Protected modifier in Java?, 26. Difference between Set, List and Map in Java?, 27. When to use List, Set and Map?, 28. What is Array?, Advantage of Java Array v.s Disadvantage of Java Array, 31. What is thread safe or Synchronized?, 29. How do you find if ArrayList contains duplicates or not? Task, 32. How do you sort an object that you created?Task, 33. Difference between Hashtable and HashMap in Java?, 34. How would you handle Exception?, 35. TreeSet vs TreeMap, 36. final vs finalize vs finally ?, 37. Difference between Error and Exception in Java?, 38. Difference between RuntimeException and CheckedException in Java?, 39. Difference between throw and throws in Java?, 40. Difference between Object and Class?, 41. StringBuffer and StringBuilder?, 42. What is finalize()?, 43. What is final keyword?, 44. What is static keyword?, 45. What is system.gc()?, 46. Important String Methods? Table read, 47. What's the difference between IS-A and HAS-A relationship?, 48. What is Iterator and difference between for each loop?, 49. Java Collection Framework, 50. How to convert float to String? Task.

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