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CMSC 132 TEST WITH VERIFIED ANSWERS RATED A+.
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CMSC 132 TEST WITH VERIFIED ANSWERS RATED A+.
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CMSC 132 TEST WITH VERIFIEDANSWERS RATED A+
Classes Ncan Nonly Nextend Nmore Nthan None Nother Nclass Nif Nat Nleast None Nof
Nthose Nclasses Nis Nan Nabstract Nclass. N- N Ncorrect Nanswer-False N- Na NClass Ncan
Nnever Nextend Nmore Nthan None Nclass.
t/f Nstatic Nmethods Ncannot Nbe Noverridden N- N Ncorrect Nanswer-true- Nstatic
Nmethods Ncan Nnot Nbe Noverridden
Can Na Nstatic Nnested Nclass Naccess Nnonstatic Nvariables Nof Nthe Nouter Nclass? N- N
Ncorrect Nanswer-Yes, Nthrough Nan Nobject Nreference
t/f Nif Nthere Nis Nanything Ninside Nthe Nclass Nthat Nis Ndeclared Nto Nbe Ntype NT, Nonly
Nmethods Nfrom Nthe NObject Nclass Ncan Nbe Ncalled Non Nit N- N Ncorrect Nanswer-
True- Nonly NObject Nmethods Ncan Nbe Ncalled Non NT
Can Nan Ninner Nclass Nbe Nseen Noutside Nof Nthe Nouter Nclass? N- N Ncorrect Nanswer-
No, Nthe Ninner Nclass Ncan Nonly Nbe Nseen Nby Nthe Nouter Nclass
When Ndo Nnonstatic Nfields Nof Nan Nobject Ncome Ninto Nexistence N- N Ncorrect
Nanswer-When Nnew Nis Ncalled
What Nare Nthe Ntwo Nadvantages Nof Ngenerics N- N Ncorrect Nanswer-1. NSome Nerrors
Nwill Nbe Ndetected Nat Ncompilation Nrather Nthan Nruntime
2. Nyou Ndon't Nhave Nto Nexplicitly Ncast Nwhen Nreturning Na Nvalue
Downcasting Ncan Nbe Ndone Nimplicitly. N- N Ncorrect Nanswer-False N- Nit Nmust Nbe
Ndone Nexplicitly Nor Nyour Ncode Nwill Nnot Ncompile.
"Sideways" Ncasting Nis Nnever Nallowed N- N Ncorrect Nanswer-True
, 'super.super' Nwill Nrefer Nto Nthe Ncurrent Nobject, Ntreating Nit Nas Nan Ninstance Nof
Nthe Nparent Nof Nthe Nparent Nof Nthe Ncurrent Nclass. N- N Ncorrect Nanswer-True. NFor
Nexample, Nif Nclass NC Nextends Nclass NB, Nwhich Nextends Nclass NA, Nthen Ncalling
N"super.super.toString()" Nfrom Nwithin Nclass NC Nwill Nreturn Nthe Nresult Nof NA's
NtoString Nmethod.
Constructors Nin Nsubclasses Nmust Ndirectly Ninvoke Nthe Nconstructors Nof Nevery
Nsingle Nparent Nclass Nbefore Ninitializing Nthe Ninstance Nvariables Nunique Nto Nthat
Nsubclass. N- N Ncorrect Nanswer-False N- Nusually, Na Nsingle Ncall Nto Nthe
Nconstructor Nof Nthe Nimmediate Nsuperclass Nis Nneeded, Nhowever. NThis Nis Ndone
Nwith Nthe Nkeyword N'super' Nand Nmust Nbe Nthe Nfirst Nline Nin Nthe Nconstructor.
. NAssume Nthere Nis Na Nmethod Nnamed Nfoo Nin Na Nsuperclass NA, Nwhich Nhas
Nbeen Noverridden Nin NB N(a Nsubclass Nof NA). NIf Nsuper.foo() Nis Ncalled Nfrom
Nwithin Nclass NB, Nit Nwill Nrun Nthe Nfoo() Nmethod Nfrom Nclass NA, Nbut Nif Nfoo() Nis
Ncalled Nfrom Nwithin Nclass NB, Nit Nwill Nrun Nthe Nfoo() Nmethod Nfrom Nclass NB. N- N
Ncorrect Nanswer-True
Every Nclass Nis Na Nsubclass Nof NObject. N- N Ncorrect Nanswer-True N- Nnote Nthat
Nthis Nquestion Ndoesn't Nnecessarily Nmean Nthat Nthe Nclass Nis NONLY Na Nsubclass
Nof NObject, Nbut Nevery Nclass Ndoes Ninherit Nfrom NObject, Neither Ndirectly Nor
Nindirectly.
When Nyou Noverride Na Nmethod, Nyou Nare Nallowed Nto Nchange Nthe Nnumber Nof
Narguments. N- N Ncorrect Nanswer-False N- Nthe Nmethod Nsignature Nmust Nbe
Nexactly Nthe Nsame
When Nyou Noverload Na Nmethod, Nyou Nare Nallowed Nto Nchange Nthe Nnumber Nof
Narguments. N- N Ncorrect Nanswer-True
To Nsort Nan NArrayList Nof NMyObject Nobjects Nusing NCollections.sort, NMyObject
Nmust Nhave Nan Nimplementation Nof Nthe NcompareTo Nmethod Ndefined Nin Nthe
Nclass. N- N Ncorrect Nanswer-False N- Nyou Ncan Nalso Npass Nin Na NComparator Nwith
Nthe Ncompare Nmethod.
Unchecked Nexceptions Nare Ngenerally Nfor Ncommon Nexceptions Nthat Nneed Nto Nbe
Naccounted Nfor. N- N Ncorrect Nanswer-False N- Nthis Nis Ndescribing Nchecked
Nexceptions, Nnot Nunchecked Nexceptions.
An Nabstract Nclass Nmust Ninclude Nat Nleast None Nabstract Nmethod. N- N Ncorrect
Nanswer-False
An Nabstract Nclass Ncan Ncontain Ninstance Nvariables Nand Nconstructors. N- N
Ncorrect Nanswer-True
You Ncan Nimplement Nmore Nthan None Nabstract Nclass. N- N Ncorrect Nanswer-False
N- NYou Ncan NEXTEND Nonly None Nabstract Nclass.
An Nabstract Nclass Ncan Nbe Ninstantiated. N- N Ncorrect Nanswer-False
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