Whatallowstheprogrammertodestroyanobjectx?()
A. x.delete()
B. x.finalize()
C. Runtime.getRuntime().gc()
D. Explicitlysettingtheobject’sreferencetonull.
Ensuringtherearenoreferencestotheobject.
F. Onlythegarbagecollectionsystemcandestroyanobject.
publicObjectm(){11.Objecto=newFloat(3.14F);12.Object[]oa=newObject[1];13.oa[0]=o;14.o=null;15.returnoa[0];16.}WhenistheFloatobject,createdinline11,eligibleforgarbagecollection?()
A. Justafterline13.
B. Justafterline14.
C. Neverinthismethod.
D. Justafterline15(thatis,asthemethodreturns).
Whichfourtypesofobjectscanbethrownusingthethrowstatement?()
A. Error
B. Event
C. Object
D. Exception
E. Throwable
F. RuntimeException
虚拟类目下,以下哪项不属于广告商品?()
A.直充话费
B.收购QQ币,每个0.5元
C.代买男女各式QQ秀,聊天勿拍
D.网游类目下,在商品描述中出现外网交易的链接信息