( 难度：中等)下列关于constructor说法正确的有（）。A.constructor在一个对象被new时执行B.constructor必须与class同名，但方法不能与class同名C.class中的constructor不可省略D.一个class只能定义一个constructor
( 难度：中等)下列关于constructor说法正确的有（）。
A.constructor在一个对象被new时执行
B.constructor必须与class同名，但方法不能与class同名
C.class中的constructor不可省略
D.一个class只能定义一个constructor
A.constructor在一个对象被new时执行
B.constructor必须与class同名，但方法不能与class同名
C.class中的constructor不可省略
D.一个class只能定义一个constructor
相关考题：
下列说法正确的有()A.class中的constructor不可省略B.constructor必须与class同名，但方法不能与class同名C.constructor在一个对象被new时执行D.一个class只能定义一个constructor
关于constructor,下列描述正确的是()。 A.class中的constructor不可省略B.constructor在一个对象被new时执行C.一个class只能定义一个constructorD.constructor必须与class同名，但方法不能与class同名
class A { A（） { } } class B extends A { } Which two statements are true？（）A、 Class B’s constructor is public.B、 Class B’s constructor has no arguments.C、 Class B’s constructor includes a call to this（）.D、 Class B’s constructor includes a call to super（）.
Which three statements are true？（）A、 The default constructor initializes method variables.B、 The default constructor has the same access as its class.C、 The default constructor invoked the no-arg constructor of the superclass.D、 If a class lacks a no-arg constructor， the compiler always creates a default constructor. E、 The compiler creates a default constructor only when there are no other constructors for the class.
Which two statements are true regarding the creation of a default constructor？（） A、 The default constructor initializes method variables.B、 The default constructor invokes the no-parameter constructor of the superclass.C、 The default constructor initializes the instance variables declared in the class.D、 If a class lacks a no-parameter constructor，， but has other constructors， the compiler creates a default constructor.E、 The compiler creates a default constructor only when there are no other constructors for the class.
Which two statements are true regarding the creation of a default constructor？（） A、 The default constructor initializes method variables.B、 The compiler always creates a default constructor for every class.C、 The default constructor invokes the no-parameter constructor of the superclass.D、 The default constructor initializes the instance variables declared in the class.E、 When a class has only constructors with parameters， the compiler does not create a default constructor.
Which two statements are true regarding the creation of a default constructor？ （） A、 The default constructor initializes method variables.B、 The compiler always creates a default constructor for every class.C、 The default constructor invokes the no-parameter constructor of the superclass.D、 The default constructor initializes the instance variables declared in the class.E、 When a class has only constructors with parameters， the compiler does not create a default constructor.
You are creating a Windows Forms application by using the .NET Framework 3.5. You plan to develop a new control for the application.The control will have the same properties as a TextBox control.You need to ensure that the control has a transparent background when it is painted on form.You want to achieve this goal by using the minimum amount of development effort.What should you do？（）A、Create a new class that is derived from the Control class.Call the SetStyle method in the constructor.B、Create a new class that is derived from theTextBox control class.Override the OnPaint method in the constructor.C、Create a new class that is derived from the Control class.Set the BackColor property of the control to Transparent.Call the SetStyle method in the constructor.D、Create a new class that is derived from theTextBox control class.Set the BackColor property of the control to Transparent in the constructor.Call the SetStyle method in the constructor.
单选题You are creating a Windows Forms application by using the .NET Framework 3.5. You plan to develop a new control for the application.The control will have the same properties as a TextBox control.You need to ensure that the control has a transparent background when it is painted on form.You want to achieve this goal by using the minimum amount of development effort.What should you do？（）ACreate a new class that is derived from the Control class.Call the SetStyle method in the constructor.BCreate a new class that is derived from theTextBox control class.Override the OnPaint method in the constructor.CCreate a new class that is derived from the Control class.Set the BackColor property of the control to Transparent.Call the SetStyle method in the constructor.DCreate a new class that is derived from theTextBox control class.Set the BackColor property of the control to Transparent in the constructor.Call the SetStyle method in the constructor.
多选题Which three statements are true？（）AThe default constructor initializes method variables.BThe default constructor has the same access as its class.CThe default constructor invoked the no-arg constructor of the superclass.DIf a class lacks a no-arg constructor， the compiler always creates a default constructor.EThe compiler creates a default constructor only when there are no other constructors for the class.
多选题Which three statements are true？（）AThe default constructor initializes method variables.BThe default constructor has the same access as its class.CThe default constructor invoked the no-arg constructor of the superclass.DIf a class lacks a no-arg constructor， the compiler always creates a default constructor.EThe compiler creates a default constructor only when there are no other constructors for the class.
多选题Which two statements are true regarding the creation of a default constructor？（）AThe default constructor initializes method variables.BThe default constructor invokes the no-parameter constructor of the superclass.CThe default constructor initializes the instance variables declared in the class.DIf a class lacks a no-parameter constructor，， but has other constructors， the compiler creates a default constructor.EThe compiler creates a default constructor only when there are no other constructors for the class.
多选题class A { A（） { } } class B extends A { } Which two statements are true？（）AClass B’s constructor is public.BClass B’s constructor has no arguments.CClass B’s constructor includes a call to this（）.DClass B’s constructor includes a call to super（）.
问答题使用VC6打开考生文件夹下的源程序文件modi3.cpp。其中定义的类并不完整，按要求完成下列操作，将类的定义补充完整。 1．在类TestClass中定义name为字符串类型，age为整型，请在注释∥********1********之后添加语句。 2．设置类TestClass0的基类为TestClass类的定义，请在注释∥********2********后添加语句。 3．在类TestClass的派生类TestClass0的公有成员中定义析构函数TestClass0，请在∥********3********后添加。 4．设置类TestClass1的基类为TestClass类的定义，请在∥********4********后实现。 本程序输出如下结果： TestClass class constructor TestClass0 class constructor TestClass on class constructor TestClass1 class constructor TestClass1 class constructor TestClass class constructor TestClass0 class constructor TestClass class constructor 注意：增加代码，或者修改代码的位置已经用符号表示出来。请不要修改其他的程序代码。
单选题You are creating a Windows Forms application by using the .NET Framework 3.5. You plan to develop a new control for the application.The control will have the same properties as a TextBox control.You need to ensure that the control has a transparent background when it is painted on form.You want to achieve this goal by using the minimum amount of development effort.What should you do？（）ACreate a new class that is derived from the Control class.Call the SetStyle method in the constructor.BCreate a new class that is derived from theTextBox control class.Override the OnPaint method in the constructor.CCreate a new class that is derived from the Control class.Set the BackColor property of the control to Transparent.Call the SetStyle method in the constructor.DCreate a new class that is derived from theTextBox control class.Set the BackColor property of the control to Transparent in the constructor.Call the SetStyle method in the constructor.
多选题Which two statements are true regarding the creation of a default constructor？ （）AThe default constructor initializes method variables.BThe compiler always creates a default constructor for every class.CThe default constructor invokes the no-parameter constructor of the superclass.DThe default constructor initializes the instance variables declared in the class.EWhen a class has only constructors with parameters， the compiler does not create a default constructor.
多选题Which three statements are true？（）AThe default constructor initializes method variables.BThe default constructor has the same access as its class.CThe default constructor invoked the no-arg constructor of the superclass.DIf a class lacks a no-arg constructor， the compiler always creates a default constructor.EThe compiler creates a default constructor only when there are no other constructors for the class.
多选题Which two statements are true regarding the creation of a default constructor？ （）AThe default constructor initializes method variables.BThe compiler always creates a default constructor for every class.CThe default constructor invokes the no-parameter constructor of the superclass.DThe default constructor initializes the instance variables declared in the class.EWhen a class has only constructors with parameters， the compiler does not create a default constructor.
多选题class A { A（） { } } class B extends A { } Which two statements are true？（）AClass B’s constructor is public.BClass B’s constructor has no arguments.CClass B’s constructor includes a call to this（）.DClass B’s constructor includes a call to super（）.
多选题Which two statements are true regarding the creation of a default constructor？（）AThe default constructor initializes method variables.BThe default constructor invokes the no-parameter constructor of the superclass.CThe default constructor initializes the instance variables declared in the class.DIf a class lacks a no-parameter constructor，， but has other constructors， the compiler creates a default constructor.EThe compiler creates a default constructor only when there are no other constructors for the class.
多选题Which two statements are true regarding the creation of a default constructor？（）AThe default constructor initializes method variables.BThe compiler always creates a default constructor for every class.CThe default constructor invokes the no-parameter constructor of the superclass.DThe default constructor initializes the instance variables declared in the class.EWhen a class has only constructors with parameters， the compiler does not create a default constructor.
多选题Which two statements are true regarding the creation of a default constructor？ （）AThe default constructor initializes method variables.BThe compiler always creates a default constructor for every class.CThe default constructor invokes the no-parameter constructor of the superclass.DThe default constructor initializes the instance variables declared in the class.EWhen a class has only constructors with parameters， the compiler does not create a default constructor.
多选题Which two statements are true regarding the creation of a default constructor？（）AThe default constructor initializes method variables.BThe default constructor invokes the no-parameter constructor of the superclass.CThe default constructor initializes the instance variables declared in the class.DIf a class lacks a no-parameter constructor，， but has other constructors， the compiler creates a default constructor.EThe compiler creates a default constructor only when there are no other constructors for the class.
多选题Which two statements are true regarding the creation of a default constructor？（）AThe default constructor initializes method variables.BThe compiler always creates a default constructor for every class.CThe default constructor invokes the no-parameter constructor of the superclass.DThe default constructor initializes the instance variables declared in the class.EWhen a class has only constructors with parameters， the compiler does not create a default constructor.
多选题Which two statements are true regarding the creation of a default constructor？（）AThe default constructor initializes method variables.BThe default constructor invokes the no-parameter constructor of the superclass.CThe default constructor initializes the instance variables declared in the class.DIf a class lacks a no-parameter constructor，， but has other constructors， the compiler creates a default constructor.EThe compiler creates a default constructor only when there are no other constructors for the class.
多选题Which two statements are true regarding the creation of a default constructor？ （）AThe default constructor initializes method variables.BThe compiler always creates a default constructor for every class.CThe default constructor invokes the no-parameter constructor of the superclass.DThe default constructor initializes the instance variables declared in the class.EWhen a class has only constructors with parameters， the compiler does not create a default constructor.
多选题Which two statements are true regarding the creation of a default constructor？（）AThe default constructor initializes method variables.BThe compiler always creates a default constructor for every class.CThe default constructor invokes the no-parameter constructor of the superclass.DThe default constructor initializes the instance variables declared in the class.EWhen a class has only constructors with parameters， the compiler does not create a default constructor.
多选题class A { A（） { } } class B extends A { } Which two statements are true？（）AClass B’s constructor is public.BClass B’s constructor has no arguments.CClass B’s constructor includes a call to this（）.DClass B’s constructor includes a call to super（）.