EBK JAVA PROGRAMMING
9th Edition
ISBN: 9781337671385
Author: FARRELL
Publisher: CENGAGE LEARNING - CONSIGNMENT
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Chapter 4, Problem 12RQ
Program Description Answer
If the user create a class that contains one method, and instantiate two objects, the user stores “one copy of the method” for use with the objects.
Hence, the correct option is “A”.
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Students have asked these similar questions
Please answer these multiple choice questions
1) The new operator:
allocates memory
is used to create an object of a class
associates an object with a variable that names it.
All of the above.
Answer:
2) A method that performs some action other than returning a value is called a __________ method.
null
void
public
private
Answer:
3) The body of a method that returns a value must contain at least one _________ statement.
void
invocation
thows
return
Answer:
4) A variable whose meaning is confined to an object of a class is called:
instance variable
local variable
global variable
none of the above
Answer:
5) A variable whose meaning is confined to a method definition is called an/a
instance variable
local variable
global variable
none of the above
Answer:
6) In Java, a block is delimited by:
( )
/* */
“ “
{ }
Answer:
7) In Java, call-by-value is only used with:
objects
primitive types
this
all of the above
Answer:
8) The parameter this refers to
instance variables
local…
An object can be __________ .a. stored in an arrayb. passed to a methodc. returned from a methodd. all of the above
a - Create a FitnessTracker class that includes data fields for a fitness activity, the number of minutes spent participating, and the date. The class includes methods to get each field. In addition, create a default constructor that automatically sets the activity to running, the minutes to 0, and the date to January 1 of the current year. Save the file as FitnessTracker.java. Create an application that demonstrates each method works correctly, and save it as TestFitnessTracker.java.
b - Create an additional overloaded constructor for the FitnessTracker class you created in Exercise 3a. This constructor receives parameters for each of the data fields and assigns them appropriately. Add any needed statements to the TestFitnessTracker application to ensure that the overloaded constructor works correctly, save it, and then test it.
c - Modify the FitnessTracker class so that the default constructor calls the three-parameter constructor. Save the class as FitnessTracker2.java. Create an…
Chapter 4 Solutions
EBK JAVA PROGRAMMING
Ch. 4 - Prob. 1RQCh. 4 - Prob. 2RQCh. 4 - Prob. 3RQCh. 4 - Prob. 4RQCh. 4 - Prob. 5RQCh. 4 - Prob. 6RQCh. 4 - Prob. 7RQCh. 4 - Prob. 8RQCh. 4 - Prob. 9RQCh. 4 - Prob. 10RQ
Ch. 4 - Prob. 11RQCh. 4 - Prob. 12RQCh. 4 - Prob. 13RQCh. 4 - Prob. 14RQCh. 4 - Prob. 15RQCh. 4 - Prob. 16RQCh. 4 - Prob. 17RQCh. 4 - Prob. 18RQCh. 4 - Prob. 19RQCh. 4 - Prob. 20RQCh. 4 - Prob. 1PECh. 4 - Prob. 2PECh. 4 - Prob. 3PECh. 4 - Prob. 4PECh. 4 - Prob. 5PECh. 4 - Prob. 6PECh. 4 - Prob. 7PECh. 4 - Prob. 8PECh. 4 - Prob. 9PECh. 4 - Prob. 10PECh. 4 - Prob. 11PECh. 4 - Prob. 1GZCh. 4 - Prob. 2GZ
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- A constant object must be__________ ; it cannot be modified after it’s created.arrow_forwardIN Python Create a class called Student that has the following attributes:• __first_name• __last_name• __final_scoreThe class should have following methods:• letter_grade: calculates the letter grade based on final• display_student_info: displays student informationWrite a Python program that creates at least five objects based on Student class. Use display_student_info method to print each object’s information as output including letter grade. Please modify the class if you think letter_grade needs to be stored as well for a class objectarrow_forwardCreate a class called Student that has the following attributes:• __first_name• __last_name• __final_scoreThe class should have following methods:• letter_grade: calculates the letter grade based on final• display_student_info: displays student informationWrite a Python program that creates at least five objects based on Student class. Use display_student_info method to print each object’s information as output including letter grade. Please modify the class if you think letter_grade needs to be stored as well for a class objectarrow_forward
- In previous chapters, you have created programs for the Greenville Idol competition. Now create a Contestant class with the following characteristics: The Contestant class contains public static arrays that hold talent codes and descriptions. Recall that the talent categories are Singing Dancing, Musical instrument, and Other. The class contains an auto-implemented property that holds a contestants name. The class contains fields for a talent code and description. The set accessor for the code assigns a code only if it is valid. Otherwise, it assigns I for Invalid. The talent description is a read-only property that is assigned a value when the code is set. Modify the GreenvilleRevenue program so that it uses the Contestant class and performs the following tasks: The program prompts the user for the number of contestants in this years competition; the number must be between 0 and 30. The program continues to prompt the user until a valid value is entered. The expected revenue is calculated and displayed. The revenue is $25 per contestant. The program prompts the user for names and talent codes for each contestant entered. Along with the prompt for a talent code, display a list of the valid categories. After data entry is complete, the program displays the valid talent categories and then continuously prompts the user for talent codes and displays the names of all contestants in the category. Appropriate messages are displayed if the entered code is not a character or a valid code.arrow_forwardA company accepts user orders by part numbers interactively. Users might make the following errors as they enter data: - The part number is not numeric. The quantity is not numeric. - The part number is too low (less than 0). - The part number is too high (more than 999). - The quantity ordered is too low (less than 1). - The quantity ordered is too high (more than 5,000). Create a class that stores an array of usable error messages; save the file as DataMessages.java. Create a DataException class; each object of this class will store one of the messages. Save the file as DataException.java. Create an application that prompts the user for a part number and quantity. Allow for the possibility of nonnumeric entries as well as out-of-range entries, and display the appropriate message when an error occurs. If no error occurs, display the message "Valid entry". Save the program as PartAndQuantityEntry.java.arrow_forwardPart A Create a class named Apartment that holds an apartment number as aptNumber, number of bedrooms as bedrooms, number of baths as baths, and rent amount as rent. Create a default constructor that accepts no arguments and an overloaded constructor that accepts values for each data field. Also create a get method for each field. Part B Write an application called TestApartments that creates at least five Apartment objects. Then prompt a user to enter a minimum number of bedrooms required, a minimum number of baths required, and a maximum rent the user is willing to pay. Display data for all the Apartment objects that meet the user’s criteria or an appropriate message if no such apartments are available. An example of the program is shown below: Enter minimum number of bedrooms needed >> 2 Enter minimum number of bathrooms needed >> 1.5 Enter maximum rent willing to pay >> 1200 Apartments meeting criteria of at least 2 bedrooms, at least 1.5 baths, and no more than…arrow_forward
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