sai6606

1. why the primitive data type have classes?
2. How java is platform independent?
3. what is collatration?
4. Adapter classes?
5. static inner classes means..?
6. what is meant by serialization?
7. Tell me the Importent classes in net package?
8. what is meant by multicast?
9. how to pass the parameters to applets?
10. what is life cycle of applet?
11. what are the diffrences between interface and abstract class?
12. why java is not supporting multiple inheritence?
13. what is the difference between multitasking and multithreading?
14. what are the differences between final,finally,finalize methods?
15. write the hierarchy of component class?
16. Keywords in Exceptions?
17. Difference between overloading and overridding?
18. Features of Java?
19. Difference between Hash Table and Hash Map?
20. Difference between array and arraylist.
21. what is the use of declaring constructor as private?
22. Difference between abstract class and Interfaces?
23. Difference between ?System.out.println? and ?System.error.println??
24. How to call static method?
25. what do you meant by Runtime Polymorphism?
26. Why Java is not purely object oriented?
27. what do you meant by Platform-Independent?
28. Difference between JDK, JRE, JVM
29. where u use Abstraction and Interface in real time
30. what is the difference between the "protected and default" modifiers?
31. is java support call by reference and call by value, if supports please explain?
32. Explain, why the constructor is required in implemented class?
33. What JNDI(Java Naming and Directory Interface) provides?
34. what is the JNDI?
35. what is a transient variable?
36. what are Hostile Applets?
37. Write a program to create a binary Tree ?
38. Write a program for recursive Traverse?
39. What is a Wrapper class?
40. Why null interfaces are used in Java?
41. What are null interfaces? Give some examples?
42. Does Java support multiple Inheritance?
43. Why are the methods of the Math class are static?
44. Is Java is 100% pure OOPS? Explain?
45. Who developed JScript language?
46. Name the package that always imported by default?
47. What are the allowed, non-Unicode letter characters that can be used as the first character of an identifier?
48. To set the position and size of a component, which methods are used?
49. Which java.util classes and interfaces support event handling?
50. Which containers use a FlowLayout as their default layout?

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Sai
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