Exam 12: Object-Oriented Design

Suppose you are developing a payroll application that computes and displays weekly paycheck amounts for various employees. As a result of the design phase, the partial Employee class below is developed. Select the method header that best completes the class, according to the method comments. public class Employee { Private double hourlyRate; Private int hoursWorked; /** Modifies the hourly rate for this employee. @param newHourlyRate the rate per hour earned by the employee */ _________________________________________ { // method body } }

Consider the following code snippet: public class Manager extends Employee { Private Project[] projects; Private Address address; ) . . } Which of the following statements is NOT correct?

You are designing a software solution for a veterinary clinic. The clinic provides various services for each pet on each visit. You have decided that the following nouns apply to the requirements: Customer, Address, Pet, Visit, Visit Date, Service Charge, Total Charge, Next Appointment. Which of these should be represented as instance variables?

If many classes of a program depend on each other, we say that ____.

Consider the following code snippet: public class Purse { Private Coin[] coins; ) . . } Which of the following statements is correct?

Before you begin designing a solution, you should ____.

You have determined a need for a Book class and a Page class in your program. Which relationship is most appropriate between these classes?

You have determined the need for a File class and a Folder class in your program. Which of the following would best describe the relationship between these classes?

In a UML diagram, dependency is denoted by ____.

Aggregation denotes that ____.

A CRC card describes ____.

Consider the following code snippet: public class Motorcycle { Private Tire[] tires; ) . . } Which of the following statements correctly describes the relationship between the Motorcycle and Tire classes?

You are designing an application to support a veterinary clinic. Which of the following probably should NOT be represented as an object?

Consider the following code snippet: public class Motorcycle { Private Tire[] tires; ) . . } This code is best described as an example of ____.

Under which of the following conditions would the public interface of a class be considered cohesive?

You are designing a software solution for an automobile rental company. A customer may rent only a single auto at a given time. You have decided that the following classes are needed: Auto, Customer, Address, Rental Contract. Which of these should be represented as aggregation?

Which of the following code snippets denotes that the Pen class depends on the Ink class?

Consider the following code snippet: public class Motorcycle extends Vehicle { ) . . } Which of the following statements correctly describes the relationship between the Motorcycle and Vehicle classes?

In a UML diagram, inheritance is denoted by ____.

In a UML diagram, aggregation is denoted by ____.