Starting Out with Java: Early Objects (6th Edition)
6th Edition
ISBN: 9780134457963
Author: GADDIS
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 3, Problem 12MC
If you do not write a constructor for a class, this is automatically provided for the class.
- a. accessor method
- b. default instance
- c. default constructor
- d. predefined constructor
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
What must be implemented in a class if there is a need for a destructor? Select all that apply.
1-Default constructor
2-Copy constructor
3-Extraction (Input) operator >>
4-Insertion (output) operator <<
5-Assignment operator=
When an object variable is declared, what happens if the programmer did not write a constructor for the class?
Group of answer choices
It will be a logic error.
It will be a syntax error.
The compiler automatically creates a simple default constructor.
The compiler will ask the user to create one.
The compiler will do nothing about it.
Question: Choose the correct one.
Note: Give me all the answers without explanation.
1.It is an instance of the class
Select one:
a. Method
b. Object
c. Data member
d. Constructor
2.The encapsulation concept means.
Select one:
a. The class has private constructors and methods
b. The data members are public access
c. The data members are private access
d. you can't access the members of the class even from the class itself
3.char A[]="hahahah"; char* p=&A[0]; *p='na'; p="CII"; cout<<A; the output is.
Select one:
a. CIIhahahah
b. hahahah
c. aahahah
d. nahahah
4.Let A is char array as follows: char A[]=”hahahah”; the length of A
Select one:
a. 32 characters
b. 7 characters
c. 28 characters
d. 8 characters
5.class A{int x;}; class B:public A{int y;public: void add(){y=++x;}};to correct the error.
Select one:
a. We should use protected: in class A
b. We should use private: in class A
c. We should use protected: in class B
d. We should use public: in class B…
Chapter 3 Solutions
Starting Out with Java: Early Objects (6th Edition)
Ch. 3.1 - In this chapter, we use the metaphor of a...Ch. 3.1 - Prob. 3.2CPCh. 3.1 - When a variable is said to reference an object,...Ch. 3.1 - A string literal, such as Joe, causes what type of...Ch. 3.1 - Prob. 3.5CPCh. 3.1 - Prob. 3.6CPCh. 3.1 - Prob. 3.7CPCh. 3.1 - Prob. 3.8CPCh. 3.1 - Prob. 3.9CPCh. 3.1 - What is a stale data item?
Ch. 3.3 - Assume that r1 and r2 are variables that reference...Ch. 3.4 - How is a constructor named?Ch. 3.4 - What is a constructors return type?Ch. 3.4 - Prob. 3.14CPCh. 3.8 - Prob. 3.15CPCh. 3.8 - When designing an object-oriented application, who...Ch. 3.8 - How do you identify the potential classes in a...Ch. 3.8 - What are a classs responsibilities?Ch. 3.8 - What two questions should you ask to determine a...Ch. 3.8 - Will all of a classs actions always be directly...Ch. 3 - This is a collection of programming statements...Ch. 3 - A class is analogous to a(n) _______. a. house b....Ch. 3 - An object is a(n) _____. a. blueprint b. attribute...Ch. 3 - This is a class member that holds data. a. method...Ch. 3 - This key word causes an object to be created in...Ch. 3 - This key word causes a value to be sent back from...Ch. 3 - This is a method that gets a value from a classs...Ch. 3 - This is a method that stores a value in a field or...Ch. 3 - When the value of an item is dependent on other...Ch. 3 - This is a method that is automatically called when...Ch. 3 - When a local variable has the same name as a...Ch. 3 - If you do not write a constructor for a class,...Ch. 3 - A classs responsibilities are __________. a. the...Ch. 3 - Prob. 14TFCh. 3 - True or False: When passing an argument to a...Ch. 3 - Prob. 16TFCh. 3 - True or False: Each instance of a class has its...Ch. 3 - True or False: When you write a constructor for a...Ch. 3 - True or False: To find the classes needed for an...Ch. 3 - Find the error in the following class: public...Ch. 3 - Prob. 2FTECh. 3 - The following statement attempts to create a...Ch. 3 - Design a class named Pet, which should have the...Ch. 3 - Look at the following partial class definition,...Ch. 3 - Look at the following description of a problem...Ch. 3 - What is the difference between a class and an...Ch. 3 - A contractor uses a blueprint to build a set of...Ch. 3 - What is an accessor method? What is a mutator...Ch. 3 - is it a good idea to make fields private? Why or...Ch. 3 - If a class has a private field, what has access to...Ch. 3 - Prob. 6SACh. 3 - Assume a program named MailList.java is stored in...Ch. 3 - Prob. 8SACh. 3 - Why are constructors useful for performing...Ch. 3 - Prob. 10SACh. 3 - What is the difference between an argument and a...Ch. 3 - Under what circumstances does Java automatically...Ch. 3 - What do you call a constructor that accepts no...Ch. 3 - Employee Class Write a class named Employee that...Ch. 3 - Car Class Write a class named Car that has the...Ch. 3 - Personal Information Class Design a class that...Ch. 3 - Temperature Class Write a Temperature class that...Ch. 3 - Retail Item Class Write a class named RetailItem...Ch. 3 - Payroll Class Design a Payroll class that has...Ch. 3 - TestScores Class Design a TestScores class that...Ch. 3 - Circle Class Write a Circle class that has the...Ch. 3 - Pet Class Design a class named Pet, which should...Ch. 3 - Patient Charges Write a class named Patient that...
Additional Engineering Textbook Solutions
Find more solutions based on key concepts
This is a method that gets a value from a classs field, but does not change it. a. accessor b. constructor c. v...
Starting Out with Java: From Control Structures through Data Structures (4th Edition) (What's New in Computer Science)
Run the hello, world program on your system. Experiment with leaving out parts of the program, to see what erro...
C Programming Language
What is the difference between a class and an instance of the class?
Starting Out with C++ from Control Structures to Objects (9th Edition)
The following code transposes the elements of an M M array, where M is a constant defined by #define. When com...
Computer Systems: A Programmer's Perspective (3rd Edition)
How many total stars will be displayed by each of the following program segments? A) for (row = 0; row 20; row...
Starting Out with C++: Early Objects (9th Edition)
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.Similar questions
- Assume that you have created a class named MyClass. The header of the MyClass constructor can be ____________. public MyClass() public MyClass (double d) Either of these can be the constructor header. Neither of these can be the constructor header.arrow_forwardDesign a class called Date that has integer data members to store month , day, and year. The class should have two constructors; a default constructor that accepts no parameters, and a three-parameter constructor that allows the date to be set by the programmer. If the user creates a Date object without passing any arguments, or if any of the values passed are invalid, the default values of 1, 1, 2001 (i.e., January 1, 2001) should be used. The class should have three (3) member functions to print the date in the following formats: 3/15/16 March 15, 2016 15 March 2016 Demonstrate the class by writing a program that uses it. Be sure your program only accepts reasonable values for month and day. The month should be between 1 and 12. The day should be between 1 and the number of days in the selected month. I expect to see all uses of the constructors that you made, including the error checking. I also expect to see all uses of the 3 output functions in your program. You are responsible…arrow_forwardA constructor is a special method that has the same name as the class and the return type void. Choose one of the options:TrueFalsearrow_forward
- Employee Class (Medium) Write a class named Employee that has the following member variables: name. A string that holds the employee’s name. idNumber. An int variable that holds the employee’s ID number. department. A string that holds the name of the department where the employee works. position. A string that holds the employee’s job title. The class should have the following constructors: A constructor that accepts the following values as arguments and assigns them to the appropriate member variables: employee’s name, employee’s ID number, department, and position. A constructor that accepts the following values as arguments and assigns them to the appropriate member variables: employee’s name and ID number. The department and position fields should be assigned an empty string (""). A default constructor that assigns empty strings ("") to the name, department, and position member variables, and 0 to the idNumber member variable. Write appropriate mutator functions that…arrow_forwardBuild a class named car. This class is defined as follows: It has the fields: Car ID, Car model , Car make, Car color, Car year. Build a constructor that accepts the five parameters (Car ID, Car model , Car make,Car color, Car year). Override the method toString() to return the string representation of Car ID, Carmodel , Car make, Car color, Car year.arrow_forwardYou create a class by writing a(n) __________. a. blueprint b. class declaration c. initialization list d. object namearrow_forward
- Write a class named Car that has the following member variables: Year: An int that holds the cars year model. Model: A string that holds the brand of the car. Speed: An int that holds the cars current speed. Color: A string that holds the color of the car. In addition, the class should have the following constructor and other member functions: Constructor: The constructor should accept the cars year, model ,speed and color as arguments. Accessor: Appropriate accessor functions to get the values stored in an object. Accelerate: The accelerate function should add 10 to the speed member variable If it’s value smaller than 50. Brake: The brake function should subtract 15 from the speed member variable If it’s value larger than 130. Count: The count function classifies the cars according to their model and their color. Afterward display the count of cars model= BMW and color=Red. Establish the class in a program that creates ten Car objects, and then calls the accelerate function ten…arrow_forwardClass members are private by default and it's not possible to access them outside the class. True Falsearrow_forwardWrite a class named Employee that has the following fields:• name. The name field references a String object that holds the employee’s name.• idNumber. The idNumber is an int variable that holds the employee’s ID number.• department. The department field references a String object that holds the name ofthe department where the employee works.• position. The position field references a String object that holds the employee’sjob title.The class should have the following constructors:• A constructor that accepts the following values as arguments and assigns them to theappropriate fields: employee’s name, employee’s ID number, department, andposition. • A constructor that accepts the following values as arguments and assigns them to theappropriate fields: employee’s name and ID number. The department and positionfields should be assigned an empty string (""). • A no-arg constructor that assigns empty strings ("") to the name, department, andposition fields, and 0 to the idNumber field.…arrow_forward
- Create a class called Employee that contains two attributes: name and number. Next, write a class named Production Worker that is a subclass of the Employee class. The Production Worker class should add extra attributes called shift_number (an integer, either 1 or 2) and pay_rate. Write the appropriate accessor and mutator methods for each class. Once you have written the classes, write a program that creates an object of the Employee class and an object of the Production Worker class and prompts the user to enter data for each of the object's data attributes. Store the data in the object, then use the object's accessor methods to retrieve it and display it on the screen.arrow_forwardJAVA - USING CONSTRUCTORS Create a class named House that includes data fields for the number of occupants and the annual income as well as methods named setOccupants(), setIncome(), getOccupants() and getIncome() that set and return those values respectively. Additionally, create a constructor that requires no arguments and automatically sets the occupants field to 1 and income field to 0. Create an additional overloaded constructor . This constructor receives an integer argument and assigns the value to the occupants field. Create a third overloaded constructor this time, the constructor receives 2 arguments, the values of which are assigned to the occupants and income fields respectively. Create another class named I_house that instantiates the House class and see if the constructors work correctly.arrow_forwardWhat is the purpose of having a destructor in a class? Your answer should be in the blanks.arrow_forward
arrow_back_ios
arrow_forward_ios
Recommended textbooks for you
Programming Logic & Design ComprehensiveComputer ScienceISBN:9781337669405Author:FARRELLPublisher:Cengage
Microsoft Visual C#Computer ScienceISBN:9781337102100Author:Joyce, Farrell.Publisher:Cengage Learning,
EBK JAVA PROGRAMMINGComputer ScienceISBN:9781337671385Author:FARRELLPublisher:CENGAGE LEARNING - CONSIGNMENT
Programming Logic & Design Comprehensive
Computer Science
ISBN:9781337669405
Author:FARRELL
Publisher:Cengage
Microsoft Visual C#
Computer Science
ISBN:9781337102100
Author:Joyce, Farrell.
Publisher:Cengage Learning,
EBK JAVA PROGRAMMING
Computer Science
ISBN:9781337671385
Author:FARRELL
Publisher:CENGAGE LEARNING - CONSIGNMENT
Introduction to Classes and Objects - Part 1 (Data Structures & Algorithms #3); Author: CS Dojo;https://www.youtube.com/watch?v=8yjkWGRlUmY;License: Standard YouTube License, CC-BY