1.classA{3.publicStringtoString(){4.return4”;5.}6.}7.classBextendsA{8.publicStringtoString(){9.returnsuper.toString()+3”;10.}11.}12.publicclassTest{13.publicstaticvoidmain(String[]args){14.System.out.printIn(newB());15.}16.}Whatistheresult()?
A.Compilationsucceedsand4isprinted.
B.Compilation……………isprinted.
C.Anerroronline9causecompilationtofail.
D.Anerroronline14causecompilationtofail.
E.Compilationsucceedsbutanexceptionisthrownatline9.
第1题:
classA{publicStringtoString(){return4”;}}classBextendsA{8.publicStringtoString(){returnsuper.toString()+3”;}}publicclassTest{publicstaticvoidmain(Stringargs){System.out.printIn(newB());}}Whatistheresult?()
A.Compilationsucceedsand4isprinted.
B.Compilationsucceedsand43isprinted.
C.Anerroronline9causescompilationtofail.
D.Anerroronline14causescompilationtofail.
E.Compilationsucceedsbutanexceptionisthrownatline9.
第2题:
下面能表示一个正确的类的是( )。
A.class A
B.class A()
C.class A[]
D.class A{}
第3题:
若有类A与类B,则以下哪个不属于类的组合关系
A.class A { B b; };
B.class A { B* p; };
C.class A { B bb[3]; };
D.class A { public: fun(B b); };
第4题:
有如下模板声明:
template<typename T1,typename 12>class A;
下列声明中,与上述声明不等价的是
A.template<class T1,class T2>class A;
B.template<class T1,typename T2>class A;
C.template<typename TI,class T2>class A;
D.template<typename T1,T2>class A;
第5题:
解释下列术语。 1.音节 2.音素 3.辅音 4.元音 5.声母 6.韵母 7.声调