网友您好, 请在下方输入框内输入要搜索的题目:
题目内容
(请给出正确答案)
class A { public byte getNumber () { return 1; } } class B extends A { public short getNumber() { return 2; } public static void main (String args) { B b = new B (); System.out.printIn(b.getNumber()) } } What is the result?()
- A、 Compilation succeeds and 1 is printed.
- B、 Compilation succeeds and 2 is printed.
- C、 An error at line 8 causes compilation to fail.
- D、 An error at line 14 causes compilation to fail.
- E、 Compilation succeeds but an exception is thrown at line 14.
参考答案
更多 “ class A { public byte getNumber () { return 1; } } class B extends A { public short getNumber() { return 2; } public static void main (String args) { B b = new B (); System.out.printIn(b.getNumber()) } } What is the result?() A、 Compilation succeeds and 1 is printed.B、 Compilation succeeds and 2 is printed.C、 An error at line 8 causes compilation to fail.D、 An error at line 14 causes compilation to fail.E、 Compilation succeeds but an exception is thrown at line 14.” 相关考题
考题
下面程序输出的结果为 #include"iostream.h" class A { public: A(){cout<<"CLASSA"<<endl;} ~A() {} }; class B:public A { public: B(){cout<<"CLASSB"<<endl;} ~B() {} }; void main() { A * p; p=new B; B *q; q=new B; }A.CLASS A CLASS BB.CLASS A CLASS B CLASS BC.CLASS A CLASS B CLASS A CLASS BD.CLASS A CLASS B CLASS B CLASS B
考题
下面程序输出的结果为#include"iostream.h"class A{public:A( ){cout<<"CLASS A"<<endl;}~A( ){}};class B:public A{public:B( ){cout<<"CLASS B"<<endl;}~B( ){}};void main( ){A*p;p=new B;B *q;q=new B;}A.CLASS A CLASS BB.CLASS A CLASS B CLASS BC.CLASS A CLASS B CLASS A CLASS BD.CLASS A CLASS B CLASS B CLASS B
考题
The IP address 192.168.100.1 belongs to which class of IP address space?()
A. Class AB. Class BC. Class CD. Class D
考题
下面程序输出的结果为 #include"iostream.h” class A { public: A(){cout<<"CLASSA"<<endl;} ~A() {} }; class B:public A { public: B(){cout<<"CLASS B"<<endl;} ~B(){} }; void main() { A*p; p=new B;A.CLASS A CLASS B CLASS B CLASS BB.CLASS A CLASS B CLASS A CLASS BC.CLASS A CLASS B CLASS BD.CLASS A CLASS B
考题
下面程序输出的结果为( )。 #inClUde”iostream.h” Class A {public: A(){cout<<“CLASS A”<<endl;} ~A()<)}; class B:public A {public: B(){cout<<”CLASSB”<<endl;} ~B(){}}; void main() {A*p; p=new B; B *q; q=new B;}A.CLASS A CLASS BB.CLASS A CLASS B CLASS BC.CLASS A ClASS BD.CLASS A CLASS B CLASS A CLASS B CLASS B CLASS B
考题
对于下面( )类定义,可以通过“newJ_Class()”生成类J_Class的实例对象。A、publicclassJ_Class{publicJ_Class(void){}}B、publicclassJ_Class{}C、publicclassJ_Class{publicJ_Class(Strings){}}D、publicclassJ_Class{publicvoidJ_Class(){}publicJ_Class(Strings){}
考题
Which statement is NOT true concerning the stowage of class 1 explosives ________.A.Class 1.1 explosives may be stowed with class 9 dangerous substancesB.Class 1.4 explosives must be“separated from”a stow of class 5.1 oxidizing materialsC.Class 1.4 explosives may not be stowed in the same hold with class 6.1 poisonsD.Class 1.4 explosives must be“separated from”a stow of class 8 corrosive materials
考题
public class SomeException { } Class a: public class a { public void doSomething() { } } Class b: public class b extends a { public void doSomething() throws SomeException { } } Which is true about the two classes?() A、 Compilation of both classes will fail.B、 Compilation of both classes will succeed.C、 Compilation of class a will fail. Compilation of class b will succeed.D、 Compilation of class a will fail. Compilation of class a will succeed.
考题
Which class of Cisco access points operate under IEEE 802.3af power?()A、Class AB、Class 1C、Class 2D、Class 3E、Class 4
考题
Which of the following class networks represents a possibility of being further subnetted into 2 subnets of 128 hosts per subnet?()A、Class AB、Class BC、Class CD、Class D
考题
In which two cases does the compiler supply a default constructor for class A?() A、 class A{}B、 class A { public A(){} }C、 class A { public A(int x){} }D、 class Z {} class A extends Z { void A(){} }
考题
Which declaration prevents creating a subclass of an outer class?()A、 Static class FooBar{}B、 Private class FooBar{}C、 Abstract public class FooBar{}D、 Final public class FooBar{}E、 Final abstract class FooBar{}
考题
Which statement about static inner classes is true?()A、 An anonymous class can be declared as static.B、 A static inner class cannot be a static member of the outer class.C、 A static inner class does not require an instance of the enclosing class.D、 Instance members of a static inner class can be referenced using the class name of the static inner class.
考题
Which thefollowingstatements about static inner classes is true?()A、 An anonymous class can be declared as static.B、 A static inner class cannot be a static member of the outer class.C、 A static inner class does not require an instance of the enclosing class.D、 Instance member of a static inner class can be referenced using the class name of the staticinner class.
考题
根据栅格系统的标准用法,错误的是()A、div class="container"brdiv class="row" B、div class="row"brdiv class="col-md-1" C、div class="row"brdiv class="container" D、div class="col-md-1"brdiv class= "row"
考题
关于嵌套列的用法,错误的是()A、div class=“row”brdiv class=“col-sm-1”B、div class=“col-sm-1”brdiv class=“row”br C、div class=“row”brdiv class=“container”brdiv class=“col-xs-1”br D、div class=“container”brdiv class=“row”brdiv class=“col-xs-1”
考题
Which of the following class addresses is reserved for multicast?()A、 Class AB、 Class BC、 Class CD、 Class D
考题
Which of the following class networks contains 65,534 hosts?()A、Class AB、Class BC、Class CD、Class D
考题
Which statements about static inner classes are true?()A、 A static inner class requires a static initializer.B、 A static inner class requires an instance of the enclosing class.C、 A static inner class has no reference to an instance of the enclosing class.D、 A static inner class has access to the non-static members of the outer class.E、 Static members of a static inner class can be referenced using the class name of the static inner class.
考题
What produces a compiler error?() A、 class A { public A(int x) {} }B、 class A {} class B extends A { B() {} }C、 class A { A() {} } class B { public B() {} }D、 class Z { public Z(int) {} } class A extends Z {}
考题
单选题Which declaration prevents creating a subclass of an outer class?()A
Static class FooBar{}B
Private class FooBar{}C
Abstract public class FooBar{}D
Final public class FooBar{}E
Final abstract class FooBar{}
考题
单选题public class SomeException { } Class a: public class a { public void doSomething() { } } Class b: public class b extends a { public void doSomething() throws SomeException { } } Which is true about the two classes?()A
Compilation of both classes will fail.B
Compilation of both classes will succeed.C
Compilation of class a will fail. Compilation of class b will succeed.D
Compilation of class a will fail. Compilation of class a will succeed.
考题
单选题What produces a compiler error?()A
class A { public A(int x) {} }B
class A {} class B extends A { B() {} }C
class A { A() {} } class B { public B() {} }D
class Z { public Z(int) {} } class A extends Z {}
热门标签
最新试卷