classSuper{publicinti=0；publicSuper（Stringtext）{i=1；}}publicclassSubextendsSuper{publicSub（Stringtext）{i=2；}publicstaticvoidmain（Stringargs[]）{Subsub=newSub（Hello”）；System.out.println（sub.i）；}}Whatistheresult？（）A.0B.1C.2D.Compilationfails.
classSuper{publicinti=0；publicSuper（Stringtext）{i=1；}}publicclassSubextendsSuper{publicSub（Stringtext）{i=2；}publicstaticvoidmain（Stringargs[]）{Subsub=newSub（Hello”）；System.out.println（sub.i）；}}Whatistheresult？（）
A.0
B.1
C.2
D.Compilationfails.
相关考题：
classSuper{2.privateinta;3.protectedSuper(inta){this.a=a;}4.}.....11.classSubextendsSuper{12.publicSub(inta){super(a);}13.publicSub(){this.a=5;}14.}Whichtwo,independently,willallowSubtocompile?() A.Changeline2to：publicinta；B.Changeline2to：protectedinta；C.Changeline13to：publicSub（）{this（5）；}D.Changeline13to：publicSub（）{super（5）；}E.Changeline13to：publicSub（）{super（a）；}
classsuper{publicintgetLength（）{return4；}}publicclassSubextendsSuper{publiclonggetLength（）{return5；}publicstaticvoidmain（String[]args）{supersooper=newSuper（）；Subsub=newSub（）；System.out.printIn（sooper.getLength（）+，”+sub.getLength（）}；}Whatistheoutput？（）A.4，4B.4，5C.5，4D.5，5E.Thecodewillnotcompile.
classsuper（publicintI=0；publicsuper（stringtext）（I=1））publicclasssubextendssuper（publicsub（stringtext）（i=2）publicstaticvoidmain（straingargs[]）（subsub=newsub（Hello”）；system.out.PrintIn（sub.i）；））Whatistheresult？（）A.Compilationwillfail.B.Compilationwillsucceedandtheprogramwillprint“0”C.Compilationwillsucceedandtheprogramwillprint“1”D.Compilationwillsucceedandtheprogramwillprint“2”
classsuper{2.publicfloatgetNum(){return3.0f;}3.}4.5.publicclassSubextendsSuper{6.7.}Whichmethod,placedatline6,willcauseacompilererror?() A.PublicfloatgetNum（）{return4.0f；}B.PublicvoidgetNum（）{}C.PublicvoidgetNum（doubled）{}D.PublicdoublegetNum（floatd）{retrun4.0f；}
classSuper{publicintgetLenght（）{return4；}}publicclassSubextendsSuper{publiclonggetLenght（）{return5；}publicstaticvoidmain（String[]args）{Supersooper=newSuper（）；Subsub=newSub（）；System.out.println（sooper.getLenght（）+“，”+sub.getLenght（））；}}Whatistheoutput？（）A.4，4B.4，5C.5，4D.5，5E.Compilationfails.
classSuper{publicIntegergetLenght（）{returnnewInteger（4）；}}publicclassSubextendsSuper{publicLongGetLenght（）{returnnewLong（5）；}publicstaticvoidmain（String[]args）{Supersooper=newSuper（）；Subsub=newSub（）；System.out.println（sooper.getLenght（）.toString（）+，”+sub.getLenght（）.toString（））；}}Whatistheoutput？（）A.4，4B.4，5C.5，4D.5，5E.Compilationfails.
classSuper{2.publicfloatgetNum(){return3.0f;}3.}4.5.publicclassSubextendsSuper{6.7.}Whichmethod,placedatline6,causescompilationtofail?() A.publicvoidgetNum（）{}B.publicvoidgetNum（doubled）{}C.publicfloatgetNum（）{return4.0f；}D.publicdoublegetNum（floatd）{return4.0d；}
classsuper{publicfloatgetNum(){return3.0f;}}publicclassSubextendsSuper{}Whichmethod,placedatline6,willcauseacompilererror?() A.PublicfloatgetNum（）{return4.0f；}B.PublicvoidgetNum（）{}C.PublicvoidgetNum（doubled）{}D.PublicdoublegetNum（floatd）{retrun4.0f；}
对于下列代码，下列哪个叙述是正确的？ class A { public int i=0; A（int m) { i = 1; } } public class B extends A { B（int m) { i = 2; } public static void main（String args[]){ B b = new B（100); System.out.println（b.i); //【代码】 } }A．程序提示编译错误。B．编译无错误，【代码】输出结果是0。C．编译无错误，【代码】输出结果是1。D．编译无错误，【代码】输出结果是2。