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假设Child类为Base类的子类，则下面（）创建对象是错误的。
- A、Base base=new Child（）
- B、Base base=new Base（）
- C、Child child=new Child（）
- D、Child child=new Base（）；
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更多 “假设Child类为Base类的子类，则下面（）创建对象是错误的。A、Base base=new Child（）B、Base base=new Base（）C、Child child=new Child（）D、Child child=new Base（）；” 相关考题
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The professor could hardly find sufficient grounds ___________ his arguments in favor of the new theory.A.on which to base
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public class Base { public static final String FOO = “foo”； public static void main（String[] args） { Base b = new Base（）； Sub s = new Sub（）； System.out.print（Base.FOO）； System.out.print（Sub.FOO）； System.out.print（b.FOO）； System.out.print（s.FOO）； System.out.print（（（Base）s）.FOO）； } } class Sub extends Base {public static final String FOO=bar；} What is the result？（） A、 foofoofoofoofooB、 foobarfoobarbarC、 foobarfoofoofooD、 foobarfoobarfooE、 barbarbarbarbarF、 foofoofoobarbarG、 foofoofoobarfoo
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class Base { Base（） { System.out.print（“Base”）； } } public class Alpha extends Base { public static void main（ String[] args ） { new Alpha（）； new Base（）； } } What is the result？（） A、 BaseB、 BaseBaseC、 Compilation fails.D、 The code runs with no output.E、 An exception is thrown at runtime.
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You are developing a Web control. The Web control captures user address information in a Web application. You create a class named AddressControl that inherits from CompositeControl. This control consists of child controls.You need to ensure that the child controls are properly output to the browser.Developers using your control must be able to set the appropriate text for labels. In addition, they must be able to pull user address information from the associated text boxes during postback. What should you do?（）A、Override the EnsureChildControls method of the base class. Add the child controls to the base container.B、Override the CreateControlCollection method of the base class. Add the child controls to the ControlCollection classC、Override the CreateChildControls method of the base class. Add the child controls to the base container.D、Override the DataBindChildren method of the base class. Add the child controls to the ControlCollection class.
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You are developing a Web control. The Web control captures user address information in a Web application. You create a class named AddressControl that inherits from CompositeControl. This control consists of child controls. You need to ensure that the child controls are properly output to the browser. Developers using your control must be able to set the appropriate text for labels. In addition, they must be able to pull user address information from the associated text boxes during postback. What should you do? （）A、Override the EnsureChildControls method of the base class. Add the child controls to the base container.B、Override the CreateControlCollection method of the base class. Add the child controls to the ControlCollection class.C、Override the CreateChildControls method of the base class. Add the child controls to the base container.D、Override the DataBindChildren method of the base class. Add the child controls to the ControlCollection class.
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You need to design a domain model that meets the company business and security requirements for controlling access to the new Web-based ordering application. What should you do？（）A、Create a child OU within the existing domainB、Create a child domain of the existing domainC、Create a new domain in a new forest. Configure the new domain to trust the existing domainD、Create a new tree in the existing forest. Configure the new domain to trust the existing domain
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单选题You are developing a Web control. The Web control captures user address information in a Web application. You create a class named AddressControl that inherits from CompositeControl. This control consists of child controls.You need to ensure that the child controls are properly output to the browser.Developers using your control must be able to set the appropriate text for labels. In addition, they must be able to pull user address information from the associated text boxes during postback. What should you do?（）A
Override the EnsureChildControls method of the base class. Add the child controls to the base container.B
Override the CreateControlCollection method of the base class. Add the child controls to the ControlCollection classC
Override the CreateChildControls method of the base class. Add the child controls to the base container.D
Override the DataBindChildren method of the base class. Add the child controls to the ControlCollection class.
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单选题class Base { Base（） { System.out.print（“Base”）； } } public class Alpha extends Base { public static void main（ String[] args ） { new Alpha（）； new Base（）； } } What is the result？（）A
BaseB
BaseBaseC
Compilation fails.D
The code runs with no output.E
An exception is thrown at runtime.
考题
单选题The professor could hardly find sufficient grounds ______ his arguments in favor of the new theory.A
on which he could baseB
which to base onC
to base onD
to be based on
考题
单选题假设Child类为Base类的子类，则下面（）创建对象是错误的。A
Base base=new Child（）B
Base base=new Base（）C
Child child=new Child（）D
Child child=new Base（）；
考题
单选题public class Base { public static final String FOO = “foo”； public static void main（String[] args） { Base b = new Base（）； Sub s = new Sub（）； System.out.print（Base.FOO）； System.out.print（Sub.FOO）； System.out.print（b.FOO）； System.out.print（s.FOO）； System.out.print（（（Base）s）.FOO）； } } class Sub extends Base {public static final String FOO=bar；} What is the result？（）A
foofoofoofoofooB
foobarfoobarbarC
foobarfoofoofooD
foobarfoobarfooE
barbarbarbarbarF
foofoofoobarbarG
foofoofoobarfoo
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