Exam 11: Multiple Classes and Inheritance

A comma separates each field in a record in a comma-____ file.​

When an object requires data when it is instantiated,the data can be passed as part of the ____ code.​

When a class is ____ into an object using the New keyword,a special procedure called a constructor is executed in the class.​

In a ComboBox object,the SelectedIndex property will contain a value of ____ if no selection has been made.​

The SelectedIndex property of a ComboBox object will contain the value ____ if a selection has been made.​

​ -A(n)____________________ object can be used to write a stream of text to a file.​

​ -When a class is instantiated into an object,a special procedure in the instantiated class called a(n)____________________ is executed.​

The Visual Basic statement "Dim objStudent As Student" will create and instantiate an object.​

​ -The ____________________ procedure is used to close a StreamWriter file.​

Which of the following contains the correct code to create and instantiate an object named MyStudent from a class named Student?​

​Identify the letter of the choice that best matches the phrase or definition. a.​classes b.​TabIndex c.​encapsulation d.​SelectedIndex e.​subclass f.​Overridable g.​object h.​three-tier i.​StreamWriter j.inheritance REFERENCES: 754 755 755 755 759 765 765 749 770 776 -​A benefit of using these is that the variables defined in one can be hidden from processing in others

​ -____________________ allows one class to inherit attributes and procedures from another class.​

In a three-tier architecture,only the persistence classes will actually ____ data.​

​Identify the letter of the choice that best matches the phrase or definition. a.​classes b.​TabIndex c.​encapsulation d.​SelectedIndex e.​subclass f.​Overridable g.​object h.​three-tier i.​StreamWriter j.inheritance REFERENCES: 754 755 755 755 759 765 765 749 770 776 -​A major contributor to reliable and robust programs

Case 11-2 Inheritance can be a tricky concept to understand,so you are working with your classmates to come up with some ways to remember how it works.​ -Given a class called Student (to represent students at a university),which of the following is likely to be an attribute contained in that class that can be inherited by the members of a subclass called OnCampusStudent?​

A subclass is always in a "has-a" relationship with the base class._________________________​

​ -When a function name in a subclass is preceded by the ____________________ keyword,the function in the subclass will override a function with the same name in the base class when the function in the subclass is called.​

The ____ statement can be used to instantiate an object from a class.​

What is the relationship into which a subclass must fit whenever inheritance is used? Provide at least three examples that illustrate this relationship.​

When using inheritance,the class that provides attributes to be inherited is called the ____ class.​