| 6.15.Questions |
| 6.15.1. | Java garbage collector executes as a low-priority, background thread(True/False). | | |
| 6.15.2. | Answer: garbage collection thread | | |
| 6.15.3. | Java garbage collector keeps track of which objects are reachable and unreachable(True/False). | | |
| 6.15.4. | Answer: garbage collection and reachable and unreachable objects | | |
| 6.15.5. | Java garbage collector can be directed to garbage collect specific objects(True/False). | | |
| 6.15.6. | Answer: garbage collection and specific objects | | |
| 6.15.7. | An object's finalize() method can be invoked multiple times by the garbage collector(True/False). | | |
| 6.15.8. | Answer: calling to finalize method | | |
| 6.15.9. | If an object's finalize() method is invoked, the object will be garbage collected(True/False). | | |
| 6.15.10. | Answer: finalize method and garbage collection | | |
| 6.15.11. | If the object has been garbage collected, its finalize() method has been invoked(True/False). | | |
| 6.15.12. | Answer: calling to finalize method and garbage collection | | |
| 6.15.13. | An object's finalize() method must perform cleanup operations(True/False). | | |
| 6.15.14. | Answer: finalize method and cleanup | | |
| 6.15.15. | The inner class will have access only to static variables in the enclosing class(True/False). | | |
| 6.15.16. | Answer: inner class and static variables | | |
| 6.15.17. | The inner class can use any variables declared in the method(True/False). | | |
| 6.15.18. | Answer: inner class and local variable | | |
| 6.15.19. | The inner class can use only local variables that are declared final(True/False). | | |
| 6.15.20. | Answer: final local variable and inner class | | |
| 6.15.21. | The inner class can use only local variables that are declared static(True/False). | | |
| 6.15.22. | Answer: static local variable and inner class | | |
| 6.15.23. | Which of the following code fragments shows the correct way to declare and initialize a reference to a NestedClass object from outside NormalClass? | | |
| 6.15.24. | Answer: static nested class definition | | |
| 6.15.25. | Which of the following code fragments shows the correct way to declare and initialize a reference to a NestedClass object from outside BaseClass? | | |
| 6.15.26. | Answer: nested class and outter class | | |
| 6.15.27. | Which variables would be able to use in place of XX? | | |
| 6.15.28. | Answers: varible reference for inner class | | |
| 6.15.29. | An inner class can have the same name as its enclosing class(True/False). | | |
| 6.15.30. | Answer: naming the inner class | | |
| 6.15.31. | An instance of a nonstatic inner class always has an associated instance of the enclosing class(True/False). | | |
| 6.15.32. | Answer: non-static inner class | | |
| 6.15.33. | What is the output when compiling and running the following code? | | |
| 6.15.34. | Answer: overloading method call | | |
| 6.15.35. | What happens when you try to compile and run the following code? | | |
| 6.15.36. | Answer: Compare Integer and Long | | |
| 6.15.37. | Is the following code a proper way to override? | | |
| 6.15.38. | Answer: how to override | | |
| 6.15.39. | What is the output when compiling the following code | | |
| 6.15.40. | Answer: overriding method and return value | | |
| 6.15.41. | What happens when you try to compile another class that includes the following method? | | |
| 6.15.42. | Answer: abstract class | | |