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voidstart(){13.Aa=newA();14.Bb=newB();15.a.s(b);16.b=null;17.a=null;18.System.out.println(startcompleted”);19.}WhenistheBobject,createdinline14,eligibleforgarbagecollection?()
A.Afterline16.
B.Afterline17.
C.Afterline18（whenthemethodsends）.
D.Thereisnowaytobeabsolutelycertain.
E.TheobjectisNOTeligibleforgarbagecollection.
参考答案
更多 “ voidstart(){13.Aa=newA();14.Bb=newB();15.a.s(b);16.b=null;17.a=null;18.System.out.println(startcompleted”);19.}WhenistheBobject,createdinline14,eligibleforgarbagecollection?() A.Afterline16.B.Afterline17.C.Afterline18（whenthemethodsends）.D.Thereisnowaytobeabsolutelycertain.E.TheobjectisNOTeligibleforgarbagecollection. ” 相关考题
考题
publicclassX{2.publicobjectm(){3.objecto=newfloat(3.14F);4.object[]oa=newobject[1];5.oa[0]=o;6.o=null;7.oa[0]=null;10.returno;9.}10.}Whenisthefloatobjectcreatedinline3,eligibleforgarbagecollection?()
A.Justafterline5.B.Justafterline6.C.Justafterline7.D.Justafterline8（thatis，asthemethodreturns）.
考题
classA{}classAlpha{privateAmyA=newA();voiddolt(Aa){a=null;}voidtryIt(){dolt(myA);}}Whichtwostatementsarecorrect?()
A.TherearenoinstancedofAthatwillbecomeeligibleforgarbagecollection.B.ExplicitlysettingmyAtonullmarksthatinstancetobeeligibleforgarbagecollection.C.AnycallontryIt（）causestheprivateinstanceofAtobemarkedforgarbagecollection.D.PrivateinstancesofAbecomeeligibleforgarbagecollectionwheninstancesofAlphabecomeeligibleforgarbagecollection.
考题
1.classTest{2.privateDemod；3.voidstart（）{4.d=newDemo（）；5.this.takeDemo（d）；6.}7.8.voidtakeDemo（Demodemo）{9.demo=null；10.demo=newDemo（）；11.}12.}WhenistheDemoobject，createdonline3，eligibleforgarbagecollection？（）A.Afterline5.B.Afterline9.C.Afterthestart（）methodcompletes.D.WhenthetakeDemo（）methodcompletes.E.Whentheinstancerunningthiscodeismadeeligibleforgarbagecollection.
考题
publicclassX{publicobjectm(){objecto=newfloat(3.14F);objectoa=newobject[1];oa[0]=o;o=null;oa[0]=null;returno;}}Whenisthefloatobjectcreatedinline3,eligibleforgarbagecollection?()
A.Justafterline5.B.Justafterline6.C.Justafterline7.D.Justafterline8（thatis，asthemethodreturns）.
考题
publicclassX{publicobjectm(){objecto=newfloat(3.14F);objectoa=newobject[1];oa[0]=o;o=null;returnoa[0];}}Whenisthefloatobjectcreatedinline3,eligibleforgarbagecollection?()
A.Justafterline5B.Justafterline6C.Justafterline7（thatis，asthemethodreturns）D.Neverinthismethod.
考题
class A{void P1(){cout"A111"};void P2(){cout"A222"};};class B:public A{void P1(){cout"B111"};virtual void P2(){cout"B222"};}..........A*cl=NULL;cl=new A;A-P1();A-P2();delete cl;cl=NULL;cl=new B;A-P1();A-P2();delete cl;cl=NULL;..........写出运行结果;
考题
2、假设 A 是一个类的名字，下面的语句生成了几个类A的对象？ A * arr[4] = { new A（), NULL,new A（) };A．A) 1B．B) 2C．C) 3D．D) 4
考题
假设 A 是一个类的名字，下面的语句生成了几个类A的对象？ A * arr[4] = { new A（), NULL,new A（) };A．A) 1B．B) 2C．C) 3D．D) 4
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