Exam 11: Multiple Classes and Inheritance

Generally,when using multiple classes within a program,variables in a class should not be available to code within other classes within the program.

Any subclass must include the ____________________ keyword to indicate the class from which it inherits.

MATCHING Identify the letter of the choice that best matches the phrase or definition. -You must use multiple classes to implement this kind of program structure

Inheritance allows one class to gain ____ from another class.

A ____ text file can be read into programs such as Microsoft Excel and Microsoft Access to import the data into the application.

____ the text means writing the next record in the file following the last record currently in the file.

In a three-tier architecture,the user interface classes should have nothing to do with how data is validated.

A variable that is declared with ____________________ access cannot be referenced by coding in any other class within the program.

Data cannot be passed into an object when it is being instantiated.

A procedure in a subclass that has the same name as a procedure in its base class must be declared in the subclass with the ____ keyword.

A constructor procedure is identified by the keyword ____.

When using inheritance,a subclass can use variables within its base class.

In a three-tier architecture,the ____ tier contains the classes that display information and accept user input.

The TabIndex property of objects on a Windows form controls the order that objects will be selected when the user presses the ____________________ key.

Data that is stored in a file or database on disk often is called ____ data.

MATCHING Identify the letter of the choice that best matches the phrase or definition. -A major contributor to reliable and robust programs

____________________ the text means writing the next record in the file following the last record currently in the file.

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?

CASE Critical Thinking Questions Case 11-1 Your colleague Jason is trying to clarify the three-tier program structure to you and he thinks that providing some practical examples will make it easier to explain it to you. -Jason offers you the example of a form that accepts user input in an application geared to allow a fundraising operation to track the donations it receives.Which of the following tiers contains the data-entry form for donations?

The MaskFull property will return a value of ____ if the mask area of a masked textbox is not completely filled.