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Java Beans Interview Questions and Answers

  Difficulty Level: AllBeginnerIntermediateExperienced/Expert

Ques 1. What are Java Beans?

Ques 2. Why do I get a NullPointerException when loading a JAR file into the BeanBox?

Ques 3. What is bean persistance property?

Ques 4. What are externizable interface?

Ques 5. What are the purpose of introspection?

Ques 6. What is property editor in java beans?

Ques 7. Write a simple bean program?

Ques 8. Difference between java bean and bean?

Ques 9. What is a Bean? Why is not a Bean an Applet?

Ques 10. Why are component architectures useful?

Ques 11. Is JavaBeans a complete component architecture?

Ques 12. Why a component architecture for the Java platform?

Ques 13. What kind of industry support exists for JavaBeans?

Ques 14. Are there JavaBeans components available that I can buy today?

Ques 15. Why nobody at Sun wants to read the messages sent to java-beans@java.sun.com?

Ques 16. What is the relationship between Sun s JFCs and JavaBeans?

Ques 17. Why do I get a duplicate name error when loading a JAR file?

Ques 18. What are the security implications for downloading Beans over the Internet?

Ques 19. When will JavaBeans be supported on the [fill in the blank] platform/operating system?

Ques 20. What is entity reference?

Ques 21. What is an entity?

Ques 22. What is enterprise bean provider?

Ques 23. What is Enterprise JavaBeans Query Language?

Ques 24. What is Enterprise JavaBeans?

Ques 25. What is enterprise information system?

Ques 26. What is EJB server?

Ques 27. What is entity bean?

Ques 28. What is EJB object?

Ques 29. What is EJB Home object?

Ques 30. What is EJB context?

Ques 31. What is EJB container?

Ques 32. What is bean customization?

Ques 33. What are introspection API in java beans?

Ques 34. What is introspection properties in java beans?

Ques 35. How to control serialization in java beans?

Ques 36. What is the serializable class in java beans?

Ques 37. How to create bound property in bean application?

Ques 38. What is Glasgow?

Ques 39. How does the InfoBus relate to JavaBeans?

Ques 40. Will the general public have access to the InfoBus API s?

Ques 41. Is the InfoBus client side only?

Ques 42. Difference between java Beans and Enterprise Java Beans?

Ques 43. What is the relation between the InfoBus and RMI?

Ques 44. Why is the JavaBeans Bridge for ActiveX only available on Windows/X86?

Ques 45. Who is developing the JavaBeans Migration Assistant to ActiveX?

Ques 46. What are/is Enterprise JavaBeans?

Ques 47. What are the properties of java beans?

Ques 48. What is the InfoBus?

Ques 49. Does the InfoBus compete with JavaBeans?

Ques 50. Is InfoBus easy to use?

Ques 51. JavaBeans has mechanisms like bound properties for data transfer between components. Why is the InfoBus necessary?

Ques 52. Can both Java applets and JavaBeans components use the InfoBus?

Ques 53. Can JavaBeans use DCOM as its network model?

Ques 54. Why would a developer need the JavaBeans Migration Assistant for ActiveX?

Ques 55. How and when will the JavaBeans Migration Assistant to ActiveX be available?

Ques 56. How to implement a bound property in your bean application?

Ques 57. What is the relationship between Enterprise JavaBeans and JavaBeans?

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