Java: An Introduction to Problem Solving and Programming plus MyProgrammingLab with Pearson eText -- Access Card Package (7th Edition)
7th Edition
ISBN: 9780133862119
Author: Walter Savitch
Publisher: PEARSON
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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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please i need add interface to my code please
// Java Program
interface University { public void add(int id, String name); } class Person { String name; int id; Person(String name, int id) { this.name = name; this.id = id; } } class Student extends Person { String Specialization; double gpa; Student(String name, int id, String Specialization, double gpa) { super(name, id); this.Specialization = Specialization; this.gpa = gpa; } } class Employee extends Person { String jop; int salary; Employee(String name, int id, String jop, int salary) { super(name, id); this.jop = jop; this.salary = salary; } }
public class Main { public static void main(String[] args) { // creating the Objects of sub classes Student s = new Student("Ritika", 20, "CSE", 7.5); Employee e = new…
Modify the given codes to remove the compilation errors.
1. public interface Carnivore {
int pieces = 10;
public static void eatGrass();
public int chew() {
return 13;
}
}
2. Interface HasWings {
public int getNumberOfWings();
}
abstract class Insect implements HasWings {
abstract int getNumberOfLegs();
}
public class Dragonfly extends Insect {
int getNumberOfLegs() {
return 6;
}
}
what is the output of the following codes :
code 1.
class A
{
{
System.out.print(1);
}
}
class B extends A
{
{
System.out.print(2);
}
}
class C extends B
{
{
System.out.print(3);
}
}
public class MainClass
{
public static void main(String[] args)
{
C c = new C();
}
}
code 2
class M
{
int i;
public M(int i)
{
this.i = i--;
}
}
class N extends M
{
public N(int i)
{
super(++i);
System.out.println(i);
}
}
public class MainClass
{
public static void main(String[] args)
{
N n = new N(26);
}
}
code 3
class M
{
int i;
public M(int i)
{
this.i = i--;
}
}
class N extends M
{
public N(int i)
{
super(++i);
System.out.println(i);
}
}
public class MainClass
{
public static void main(String[] args)
{
N n = new N(26);
}
}
Chapter 5 Solutions
Java: An Introduction to Problem Solving and Programming plus MyProgrammingLab with Pearson eText -- Access Card Package (7th 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 - Prob. 33STQCh. 5.4 - Prob. 34STQCh. 5.4 - Prob. 35STQCh. 5.4 - Prob. 36STQCh. 5.4 - Prob. 37STQCh. 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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