191. Identify the true statements about finalization.
a.A class may have only one finalize method
b.Finalizers are mostly used with simple classes
c.Finalizer overloading is not allowed
Ans: a,c.
192. When you write finalize() method for your class, you are overriding a finalizer
inherited from a super class.
a.true
b.false
Ans: a.
193. Java memory management mechanism garbage collects objects which are no longer referenced
a true
b.false
Ans: a.
194. are objects referenced by a variable candidates for garbage collection when the variable goes out of scope?
a yes
b. no
Ans: a.
195. Java's garbage collector runs as a ___ priority thread waiting for __priority threads to relinquish the processor.
a.high
b.low
Ans: a,b.
196. The garbage collector will run immediately when the system is out of memory
a.true
b.false
Ans: a.
197. You can explicitly drop a object reference by setting the value of a variable whose data type is a reference type to ___
Ans: null
198. When might your program wish to run the garbage collector?
a. before it enters a compute-intense section of code
b. before it enters a memory-intense section of code
c. before objects are finalized
d. when it knows there will be some idle time
Ans: a,b,d
199. For externalizable objects the class is solely responsible for the external format of its contents
a.true
b.false
Ans: a
200. When an object is stored, are all of the objects that are reachable from that object stored as well?
a.true
b.false
Ans: a