Java: An Introduction to Problem Solving and Programming (8th Edition)
8th Edition
ISBN: 9780134462035
Author: Walter Savitch
Publisher: PEARSON
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Expert Solution & Answer
Chapter 5.3, Problem 31STQ
Explanation of Solution
Reasons for displaying the given output:
- • From the given code of “ExerciseProgram”
- ○ The variable “s1” is the object of “Species” class.
- ○ The variable “mysteryMaker” is the object of “ExerciseClass” class.
- ○ The statement “int n = 0;” implies initializes the variable “n” to “0”.
- ○ The statement “s1.setSpecies("Hobbit", 100, 2);” implies call the method “setSpecies” for object “s1” with arguments of “Hobbit” for name, “100” for population and “2” for growth rate.
- ■ Now “s1” contains “Hobbit” for name, “100” for population and “2” for growth rate.
- ○ The statement “mysteryMaker.mystery(s1, n)” implies call the method “mystery” for object “mysteryMaker” with arguments of “s1” for “Species” class and “n”.
- ■ In the “ExerciseClass” class, the method “mystery” implies
- • Call the method “setSpecies” for object “s” with arguments of “Klingon ox” for name, “10” for population and “15” for growth rate...
- ■ In the “ExerciseClass” class, the method “mystery” implies
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public class LabProgram {
public static void main(String args[]) {
Course cis162 = new Course();
int beforeCount;
String toDrop;
// Example students for testing
cis162.addStudent(new Student("Henry", "Nguyen", 3.5));
cis162.addStudent(new Student("Brenda", "Stern", 2.0));
cis162.addStudent(new Student("Lynda", "Robison", 3.2));
cis162.addStudent(new Student("Sonya", "King", 3.9));
toDrop = "Stern";
beforeCount = cis162.countStudents();
cis162.dropStudent(toDrop);
System.out.println("Course size: " + beforeCount + " students");
System.out.println("Course size after drop: " + cis162.countStudents() + " students");
}
}
import java.text.DecimalFormat;
// Class representing a student
public class Student {
private String first; // first name
private String last; // last name
private double gpa; // grade point average
// Student class constructor
public Student(String f, String l, double g) {…
For the following four classes, choose the correct relationship between each pair.
public class Room (
private String m type;
private double m area;
// "Bedroom", "Dining room", etc.
// in square feet
public Room (String type, double area)
m type
type;
m area
= area;
public class Person {
private String m name;
private int m age;
public Person (String name, int age)
m name
= name;
m age = age;
public class LivingSSpace (
private String m address;
private Room[] m rooms;
private Person[] m occupants;
private int m countRooms;
private int m countoccupants;
public LivingSpace (String address, int numRooms, int
numoccupants)
m address =
address;
new int [numRooms];
= new int [numOceupants];
m rooms
%3D
D occupants
m countRooms = m countOccupants = 0;
public void addRoom (String type, double area)
class overload
{
int x;
double y;
void add(int a , int b)
{
x = a + b;
}
void add(double c , double d)
{
y = c + d;
}
overload()
{
this.x
0;
%3D
this.y = 0;
}
%3D
}
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{
public static void main(String args[])
{
overload obj
int a = 2;
double b - 3.2;
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= new overload();
+ obj.y);
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#3Run the code
Chapter 5 Solutions
Java: An Introduction to Problem Solving and Programming (8th Edition)
Ch. 5.1 - Consider the program in Listing 5.4 . Suppose you...Ch. 5.1 - Prob. 2STQCh. 5.1 - Prob. 3STQCh. 5.1 - Suppose every species in the world has a peculiar...Ch. 5.1 - Revise the definition of the method writeOutput in...Ch. 5.1 - Revise the definition of the method readInput in...Ch. 5.1 - Revise the definition of the method...Ch. 5.1 - What is the meaning of (int) that appears in the...Ch. 5.1 - Prob. 9STQCh. 5.1 - Define a method called getDensity that could be...
Ch. 5.1 - Define a method called changePopulation that could...Ch. 5.1 - Define a method called changePopulation that could...Ch. 5.2 - In Listing 5.12, we set the data for the object...Ch. 5.2 - Give preconditions and postconditions for the...Ch. 5.2 - What is an accessor method? What is a mutator...Ch. 5.2 - Give the complete definition of a class called...Ch. 5.2 - Prob. 17STQCh. 5.2 - In the definition of the method in Listing 5.15,...Ch. 5.2 - What is a well-encapsulated class definition?Ch. 5.2 - When should an instance variable in a class...Ch. 5.2 - Prob. 21STQCh. 5.2 - In a class definition, is anything private ever...Ch. 5.2 - In a class definition, is the body of any method...Ch. 5.3 - What is a reference type? Are class types...Ch. 5.3 - When comparing two quantities of a class type to...Ch. 5.3 - Prob. 26STQCh. 5.3 - Write a method definition for a method called...Ch. 5.3 - Given the class Species as defined in Listing...Ch. 5.3 - After correcting the program in the previous...Ch. 5.3 - What is the biggest difference between a parameter...Ch. 5.3 - Prob. 31STQCh. 5.3 - Write an equals method for the class Person...Ch. 5.4 - Rewrite the method drawFaceSansMouth in Listing...Ch. 5 - Design a class to represent a credit card. Think...Ch. 5 - Repeat Exercise 1 for a credit card account...Ch. 5 - Repeat Exercise 1 for a coin instead of a credit...Ch. 5 - Repeat Exercise 1 for a collection of coins...Ch. 5 - Consider a Java class that you could use to get an...Ch. 5 - Consider a class that keeps track of the sales of...Ch. 5 - Consider a class MotorBoat that represents...Ch. 5 - Prob. 8ECh. 5 - Prob. 9ECh. 5 - Prob. 10ECh. 5 - Write a program to answer questions like the...Ch. 5 - Define a class called Counter. An object of this...Ch. 5 - Prob. 3PCh. 5 - Define a Trivia class that contains information...Ch. 5 - Define a Beer class that contains the following...Ch. 5 - Write a grading program for an instructor whose...Ch. 5 - Add methods to the Person class from Self-Test...Ch. 5 - Create a class that represents a grade...Ch. 5 - Write a program that uses the Purchase class in...Ch. 5 - Write a program to answer questions like the...Ch. 5 - Consider a class that could be used to play a game...Ch. 5 - Consider a class BasketballGame that represents...Ch. 5 - Consider a class ConcertPromoter that records the...Ch. 5 - Prob. 9PPCh. 5 - Consider a class Movie that contains information...Ch. 5 - Repeat Programming Project 18 from Chapter 4, but...Ch. 5 - Prob. 12PP
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