Pearson eText for Starting Out with Java: Early Objects -- Instant Access (Pearson+)
6th Edition
ISBN: 9780137516803
Author: Tony Gaddis
Publisher: PEARSON+
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Textbook Question
Chapter 3, Problem 4MC
This is a class member that holds data.
- a. method
- b. instance
- c. field
- d. constructor
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T/F: Instance variables are shared by all the instances of the class.
T/F: The scope of instance and static variables is the entire class. They can be declared anywhere inside a class.
T/F: To declare static variables, constants, and methods, use the static modifier.
In order to use the assignment operator on an instance of a class data type, it must be overloaded.
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True
False
Parent Class: Food
Write a parent class called Food. A food is described by a name, the number of grams of sugar (as a whole number), and the number of grams of sodium (as a whole number).
Core Class Components
For the Food class, write:
the complete class header
the instance data variables
a constructor that sets the instance data variables based on parameters
getters and setters; use validity checking on the parameters where appropriate
a toString method that returns a text representation of a Food object that includes all three characteristics of the food
Class-Specific Method
Write a method that calculates what percent of the daily recommended amount of sugar is contained in a food. The daily recommended amount might change, so the method takes in the daily allowance and then calculates the percentage.
For example, let's say a food had 6 grams of sugar. If the daily allowance was 24 grams, the percent would be 0.25. For that same food, if the daily allowance was 36 grams, the…
Chapter 3 Solutions
Pearson eText for Starting Out with Java: Early Objects -- Instant Access (Pearson+)
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...
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