Write an application that contains an array of 10 multiple-choice quiz questions related to your favorite hobby. Each question contains three answer choices. Also create an array that holds the...
In each case, determine the problem and fix the program. After you correct the errors, save each file using the same filename preceded with Fix. For example, DebugEight1.java will become...
Employing inheritance reduces errors because ____________. a. Subclasses have access to fewer data fields b. Subclasses have access to fewer methods c. Methods that have been created in the...
Which of the following choices is the best example of a parent class/child class relationship? a. BodyOfWater/River b. Apple/Banana c. Spaniel/Dog d. Sparrow/Bird
A class named Building has a public, nonstatic method named getFloors(). If School is a child class of Building, and modelHigh is an object of type School, which of the following statements is valid?...
In Java, the concept of keeping data private is known as ____________. a. Polymorphism b. Concealing fields c. Data deception d. Information hiding
When a parent class contains a static method, child classes ____________ override it. a. Frequently b. Seldom c. Must d. Cannot
Parent classes are ____________ than their child classes. a. Less specific b. More specific c. Easier to understand d. More cryptic
Abstract classes differ from other classes in that you ____________. a. Must not code any methods within them b. Must instantiate objects from them c. Cannot instantiate objects from them d. Cannot...
Abstract classes can contain ____________. a. Abstract methods b. Nonabstract methods c. Both of the above d. None of the above
An abstract class Dwelling has two subclasses, SingleFamily and MultiFamily. None of the constructors for these classes requires any arguments. Which of the following statements is legal? a. Dwelling...
Which of the following statements is true? a. Superclass objects are members of their subclass. b. Superclasses can contain abstract methods. c. You can create an abstract class object using the new...
When you create a ____________ in Java, you create a variable name in which you can hold the memory address of an object. a. Field b. Reference c. Recommendation d. Pointer
An applications ability to select the correct subclass method to execute is known as ____________ method binding. a. Polymorphic b. Intelligent c. Early d. Dynamic
Which statement creates an array of five references to an abstract class named Currency? a. Currency[] = new Currency[5]; b. Currency[] currencyref = new Currency[5]; c. Currency[5] currencyref = new...
An abstract class Employee has two subclasses, Permanent and Temporary. The Employee class contains an abstract method named setType(). Before you can instantiate Permanent and Temporary objects,...
You ____________ override the toString() method in any class you create. a. Cannot b. Can c. Must d. Must implement StringListener to
The Object class equals() method takes ____________. a. No arguments b. One argument c. Two arguments d. As many arguments as you need
Assume that the following statement appears in a working Java program and that the equals() method has been overridden correctly in things class: if(thing.equals(anotherThing)) x = 1; You know that...
The Object class equals() method considers two object references to be equal if they have the same ____________. a. Value in all data fields b. Value in any data field c. Data type d. Memory address
Each Java subclass has the ability to inherit from ____________ parent class(es). a. Zero b. One c. Two d. Any number of
The alternative to multiple inheritance in Java is known as a(n) ____________. a. Superobject b. Abstract class c. Interface d. None of the above
When you create a class that uses an interface, you include the keyword ____________ and the interfaces name in the class header. a. interface b. implements c. accoutrements d. listener
You can instantiate concrete objects from a(n) ____________. a. Abstract class b. Interface c. Either a or b d. Neither a nor b
In Java, a class can ____________. a. Inherit from one abstract superclass at most b. Implement one interface at most c. Both a and b d. Neither a nor b
You created a Quiz class that contains an array of 10 multiplechoice questions to which the user was required to respond with an A, B, or C. At the time, you knew how to handle the users response if...
A jframe is a descendant of each of the following classes except the ____________ class. A. Component B. Container C. Jar D. Window
Unlike a window, a jframe ____________. A. Has a title bar and border B. Can be made visible C. Can have descendants D. Can hold other objects
When a user closes a jframe, the default behavior is for ____________. A. The jframe to close and the application to keep running b. The jframe to be hidden and the application to keep running c. The...
Suppose that you create an application in which you instantiate a JFrame named frame1 and a JLabel named label1. Which of the following statements within the application adds label1 to frame1? a....
The arguments required by the font constructor include all of the following except ____________. A. Typeface b. Mode c. Style d. Point size
Within an event-driven program, a component on which an event is generated is the ____________. A. Performer B. Listener C. Source D. Handler
A class that will respond to button-press events must use which phrase in its header? a. Import java.event b. Extends action c. Extends j frame d. Implements action listener
A JFrame contains a JButton named button1 that should execute an actionPerformed() method when clicked. Which statement is needed in the JFrame class? a. addActionListener(this); b....
A class can implement ____________. A. One listener B. Two listeners C. As many listeners as it needs D. Any number of listeners as long as they are not conflicting listeners
When you write a method that reacts to JCheckBox changes, you name the method ____________. a. itemStateChanged() b. actionPerformed() c. checkBoxChanged() d. Any legal identifier you choose
If a class contains two components that might each generate a specific event type, you can determine which component caused the event by using the ____________ method. a. addActionListener() b....
Figure 13-32 is an activity diagram for the use case Return books in the university library system. Do the following: a. Develop a first-cut sequence diagram that only includes the actor and problem...
For the format used in Exercise 5.19, what decimal number is represented by each of the following numbers in floating point format? a. C2F00000 16 b. 3C540000 16 Data from Exercise 5.19 Convert the...
Perform the following unsigned multiplication in binary using a minimum number of bits required for each decimal number using pencil and paper method: 12 x 52
Find the odd parity bit for the following binary message to be transmitted: 10110000.
Repeat Problem 2.20 using repeated addition. Data From Problem 20 Perform the following unsigned multiplication in binary using a minimum number of bits required for each decimal number using pencil...
Figure 13-33 is a fully developed use case description for the use case Receive new book in the university library system. Do the following: a. Develop a first-cut communication diagram that only...
Draw a logic diagram to implement F = ABCDE using only 3-input AND gates.
Using truth tables, express each one of the following functions and their complements in terms of sum of minterms and product of maxterms: (a) F = ABC + ABD + A B C + ACD (b) F = (W+ X + Y)(WX + Y)...
Minimize each of the following functions using a K-map: (a) F(A, B, C) = m(0, 1, 4, 5) (b) F(A, B, C) = m(0, 1, 2, 3, 6) (c) F(X, Y, Z) = m(0, 2, 4, 6)
Minimize each of the following expressions for F using a K-map. (a) F(A,B,C) = BC + ABC + ABC (b) F(A,B,C) = ABC + BC (c) F(A,B,C) = AC + A(BC + BC)
Using your solution to problem 8, do the following: a. Add the view layer classes and the data access classes to your diagram. b. Develop a package diagram showing a three layer solution with view...
Figure 13-36 is a fully developed use case description for the use case Print patient invoices in the dental clinic system. Do the following: a. Develop a first-cut communication diagram that only...
In Chapter 10, we identified these four subsystems: Customer account subsystem (such as customer account) Pickup request subsystem (such as sales) Package delivery subsystem (such as order...
What is the three-character extension appended to solution filenames in Visual Basic? a. .prg b. .sln c. .src d. .vbs
Explain the difference between a forms Text property and its Name property.
How do you verify the name of the startup form?
A buttons caption should be entered using sentence capitalization. a. True b. False
Which of the following statements is false? a. The text contained in an identifying label should be left-aligned within the label. b. An identifying label should be positioned either above or to the...
Create a Windows Forms application. Use the following names for the project and solution, respectively: Jackets Project and Jackets Solution. Save the application in the VB2017\Chap01 folder. a....
If necessary, complete Exercise 3. Use Windows to rename the Jacket Solution folder to Jackets Solution-Modified. Open the Jackets Solution.sln file contained in the VB2017\ Chap01\Jackets...
What is the id used for text box names? A. Tex B. Text C. Txt D. None of the above.
What is the ID used for label control names? a. lab b. lal c. lbe d. None of the above.
Label controls that display program output typically have their BorderStyle property set to _____________________. a. BorderSingle b. Fixed3D c. FixedSingle d. None
Which of the following should have their names changed to more meaningful ones? A. All controls that will be coded B. All controls that will be referred to in code C. The form D. All of the above.
Define sentence capitalization.
Listed below are the five steps for planning a Windows Forms application. Put the steps in the proper order by placing a number (1 through 5) on the line to the left of the step....
Which flowchart symbol represents a processing task? a. Circle b. Oval c. Parallelogram d. Rectangle
The expression intNum * intNum * intNum is equivalent to which of the following expressions? a. intNum ^ 3 b. intNum * 3 c. intNum ^ 2 * intNum d. Both a and c.
What is the result of the following expression: 3 * 5 \ 2 + 30 / 5? a. 7.5 b. 13 c. 13.5 d. None of the above.
Create an application that calculates and displays two raise amounts, which are based on an employees current salary. The current salary will be entered by the user. The two raise rates are 5% and...
Which of the following is a computer memory location whose value does not change during run time? A. Literal B. Named constant C. Static constant D. Variable
Create an application that calculates and displays the percentage of students receiving a grade of P (for Pass) and the percentage of students receiving a grade of F (for Fail). Before creating your...
If Option Strict is set to On, which of the following statements assigns the sum of two Integer variables to the Text property of the lblTotal control? a. lblTotal.Text = (intN1 + intN2).ToString b....
Which of the following statements prevents data loss due to implicit type conversions? a. Option Convert Off b. Option Explicit On c. Option Implicit Off d. Option Strict On
Evaluate the following expression: 13 > 12 OrElse 6 < 5. a. True b. False
What will the code in Figure 4-53 assign to the intCost variable when the intAge variable contains the number 65? a. 0 b. 5 c. 8 d. 10 If intAge
Where can a nested selection structure appear? a. Only in an outer selection structures false path b. Only in an outer selection structures true path c. In either of an outer selection structures...
Which of the following Case clauses is valid in a Select Case statement whose selectorExpression is an Integer variable named intAge? a. Case Is > 21 b. Case 21, 65 c. Case 1 To 10 d. All of the...
What will the code in Figure 4-54 assign to the lblStatus control when the strLevel variable contains the string 2? a. Bronze b. Gold c. Platinum d. Silver "2" Then If strLevel = "1" OrElse strLevel...
What will the code in Figure 4-54 assign to the lblStatus control when the strLevel variable contains the string 5? a. Bronze b. Gold c. Platinum d. Silver If strLevel = "1" OrElse strLevel "2" Then...
What will the code in Figure 4-54 assign to the lblStatus control when the strLevel variable contains the string 10? a. Bronze b. Gold c. Platinum d. Silver If strLevel = "1" OrElse strLevel "2" Then...
What is the minimum number of radio buttons in a group? a. One b. Two c. Three d. There is no minimum number of radio buttons.
If a check box is not selected, what value is contained in its Checked property? a. True b. Unchecked c. False d. Unselected
Which capitalization should be used for the text appearing in check boxes and radio buttons? a. Sentence capitalization b. Book title capitalization c. Either book title capitalization or sentence...
A form contains six check boxes. Three of the check boxes are located in a group box. How many of the check boxes on the form can be selected at the same time? a. One b. Two c. Three d. Six
What will the code in Figure 4-55 assign to the strStatus variable when the intLevel variable contains the number 4? a. Bronze b. Gold c. Platinum d. Silver Select Case intLevel Case 1, 2 = "Bronze"...
What will the code in Figure 4-55 assign to the strStatus variable when the intLevel variable contains the number 7? a. Bronze b. Gold c. Platinum d. Silver Select Case intLevel Case 1, 2 strStatus =...
Which of the following If clauses will evaluate to True when the Bonus check box is selected? a. If chkBonus.Check = True Then b. If chkBonus.Checked Then c. If chkBonus.Checked = True Then d. Both b...
When entered in the appropriate event procedure, which of the following statements cancels the key pressed by the user? a. e.Handled = True b. e.Handled = False c. e.KeyCancel = True d. e.KeyCancel =...
Which of the following If clauses determines whether the user pressed the Backspace key? a. If e.KeyChar = ControlChars.Back Then b. If e.KeyChar = Backspace Then c. If e.KeyChar =...
Which of the following If clauses determines whether the user pressed the % key? a. If ControlChars.PercentSign = True Then b. If e.KeyChar = "%" Then c. If e.KeyChar = Chars.PercentSign Then d. If...
The computer will stop processing the loop in Review Question 6 when the intCount variable contains the number _____________________. a. 11 b. 12 c. 13 d. 14
In this exercise, you modify the Grade application from Exercise 13 in Chapter 3. Use Windows to copy the Grade Solution folder from the VB2017\Chap03 folder to the VB2017\Chap04 folder. Open the...
In this exercise, you modify the Sales application from Exercise 14 in Chapter 3. Use Windows to copy the Sales Solution folder from the VB2017\Chap03 folder to the VB2017\Chap04 folder. Open the...
The loop controlled by the correct For clause from Review Question 13 will end when the intX variable contains the number _____________________. a. 100 b. 111 c. 101 d. 110
To make the btnCalc control the default button, you need to set the _____________________ property. a. btnCalcs AcceptButton b. btnCalcs DefaultButton c. forms AcceptButton d. forms DefaultButton
Minimize the following expression using a K-map: F = AB + A B CD + CD + A B C D and then draw schematics using: (a) NAND gates. (b) NOR gates.
Draw a logic diagram for a two-input (A,B) Exclusive-OR operation using only four two-input (A,B) NAND gates. Assume that complemented inputs A and B are not available.
Express the following functionsF 1 and F 2 in terms of the inputs A, B, and C. What is the relationship between F 1 and F 2 ? A - F, D- Do F2
Design a combinational circuit that accepts a three-bit unsigned number and generates an output binary number equal to the input number plus 1. Draw a schematic using logic gates. Show all steps...
Name the five phases of the traditional systems development life cycle (SDLC), and explain the purpose and deliverables of each phase.
Explain the distinction between entity type and entity instance.
Design a combinational circuit that converts a 4-bit BCD input to its nines complement output. Draw a schematic using logic gates. Show all steps clearly.