Fill in the blank.

41. A ____________ object is used to hold the two int variables representing the width and height of a component.

42. An exception object is inserted into the exception handling mechanism using the ___________ keyword.

43. ____________ and ____________ are the words used to describe a Java objects ability to inspect an unknown object at runtime.

44. All input streams descend from either ________________ or ______________________.

45. A nested class is also considered ________ unless it has been declared _________.

46. The _____________ method of an object is called by the garbage collector.

47. JVM stands for ________ ____________ ________________; JRE stands for __________

_________________ ______________.

48. The keyword ____________________ is used to mark a variable whose value should not be written to the stream when the object is serialized.

49. A stream object that can attach to something is known as a ________________ or _________________ stream; a stream object that can change the data passing through it is known as a _____________________ stream.

50. All output streams descend from either ___________________ or ___________________________.