Absolute Java (6th Edition)
6th Edition
ISBN: 9780134041674
Author: Walter Savitch, Kenrick Mock
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 4, Problem 9PP
Define a class whose objects are records on animal species. The class should have instance variables for the species name, population, and growth rate. The growth rate is a percentage that can be positive or negative and can exceed 100%. Include a suitable collection of constructors, mutator methods, and accessor methods. Include a toString method and an equals method. Include a boolean valued method named endangered that returns true when the growth rate is negative and returns false otherwise. Write a test
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
box1 and box2 are instances of the Box class. Attributes length, width, and height of both box1 and box2 are read from input. Then, two strings are read from input. In the Box class, define instance method print_measurements() with self and one string as parameters to output the string parameter in one line, and the following in the next line:
The value of attribute length
' by '
The value of attribute width
' by '
The value of attribute height
Give a complete definition of a class called TitledPerson, which youderive from the class Person in Listing 8.1. The class TitledPerson hasone additional String instance variable for a title, such as Ms., Mr.,or The Honorable. The class TitledPerson has two constructors: adefault constructor and one that sets both the name and the title. It hasa writeOutput method, a reset method, an equals method, an accessormethod getTitle that returns the title, and a mutator method setTitlethat changes the person’s title. For two titled people to be equal, theymust have the same name and the same title. You may want to use theclass Student in Listing 8.2 as a model.
PLEASE FAST
Define a class called Country. A Country has populationSize, area, capital, currency, and abbreviation (2-3 letters taken from the country name). Define at least two constructors, at least two getter methods, at least two setter methods, and Override the toString() and the equals() methods. The equals() method must return true if the two countries have the same name and same populationSize and false otherwise.
The abbreviation is the first letter and the second letter of the country name and must be generated automatically (e.g. if the country name is Palestine the abbreviation is PA, if the country name is Jordan the abbreviation is JO.)
Write a main method, define an array of country objects, read countries data from the user, if two countries have the same abbreviation add the last letter from the country name to the abbreviation of the country inserted last. Display countries whose area is greater than 10000 km2.
Chapter 4 Solutions
Absolute Java (6th Edition)
Ch. 4 - Write a method called makeItNewYears that could be...Ch. 4 - Write a method called yellIfNewYear that could be...Ch. 4 - Prob. 3STECh. 4 - Write a method called happyGreeting that could be...Ch. 4 - Prob. 5STECh. 4 - Write a method called advanceYear that could be...Ch. 4 - Prob. 7STECh. 4 - Prob. 8STECh. 4 - Consider the definition of the method monthString...Ch. 4 - The method writeOutput in Display 4.2 uses the...
Ch. 4 - Rewrite the definitions of the methods getDay and...Ch. 4 - Rewrite the method getMonth in Display 4.2 using...Ch. 4 - In the definition of precedes in Display 4.7, we...Ch. 4 - Prob. 14STECh. 4 - Following the style guidelines given in this book,...Ch. 4 - Prob. 16STECh. 4 - List all the accessor methods in the class...Ch. 4 - List all the mutator methods in the class...Ch. 4 - Write a better version of the method dateOK with...Ch. 4 - What is the signature of each of the following...Ch. 4 - Prob. 21STECh. 4 - Prob. 22STECh. 4 - Prob. 23STECh. 4 - If a class is named CoolClass, what names are...Ch. 4 - Suppose you have defined a class such as the...Ch. 4 - What is a no-argument constructor? Does every...Ch. 4 - What would be the last line in the dialogue in...Ch. 4 - What would be the last line in the dialogue in...Ch. 4 - Write a program that outputs a certain coded...Ch. 4 - Prob. 2PPCh. 4 - Define a class called Journal that could be used...Ch. 4 - Define a class called WordCount whose objects...Ch. 4 - Write a grading program for a class with the...Ch. 4 - Prob. 7PPCh. 4 - Redefine the class Date in Display 4.13 so that...Ch. 4 - Define a class whose objects are records on animal...Ch. 4 - Prob. 10PPCh. 4 - Prob. 11PPCh. 4 - This programming project extends Programming...Ch. 4 - Your Community Supported Agriculture (CSA) farm...Ch. 4 - A comma-separated values (CSV) file is a simple...Ch. 4 - Prob. 15PP
Additional Engineering Textbook Solutions
Find more solutions based on key concepts
The decimal number 17 is equal to the binary number 10010 11000 10001 01001
Digital Fundamentals (11th Edition)
The ___________ statement causes a loop to terminate immediately.
Starting Out with C++ from Control Structures to Objects (8th Edition)
A class is analogous to a(n) _______. a. house b. blueprint c. drafting table d. architect
Starting Out with Java: From Control Structures through Data Structures (3rd Edition)
Hotel Suites Occupancy Write a program that calculates the occupancy rate of the 120 suites (20 per floor) loca...
Starting Out with C++: Early Objects (9th Edition)
Run the hello, world program on your system. Experiment with leaving out parts of the program, to see what erro...
C Programming Language
Explain how entities are transformed into tables.
Database Concepts (7th 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
- Please in pyth coding with correct indentation 4a) Given that you have a Liquid class that can be initialized with any amount of gallons, liters, ounces, etc, write the first line of the method that will allow you to add together two Liquid objects using operator overloading. Again, write ONLY the first line (method definition) – you do NOT have to write the entire method. 4b) Given that you have L1 and L2 which are instances of the Liquid class, write a line of code that uses operator overloading to add them together and assign the result to L3.arrow_forward1. Making a class called Day. Two of its variables are month and year. The best type for the year would be? it will be Int. Can you explained it! 2. While unit testing, what is the last step before running the test? The Answer is Implement your class or methods. Please explain! 3. With respect to unit testing, what would it mean for your code to have 100% coverage? This means All class constructors and class methods have tests. Please explainarrow_forwardConsider the following Student Class An. EngineeringStudent "is-a" Student whose major is Engineering. In additional to the name, number of credit hours, and GPA, an Engineering electrical, computer, etc. Write the complete defoe the Engineeringstudent class including the implementation of the methods.arrow_forward
- this is the whole problem i did 1 to 3 im stuck at 4 Create a class called Student, with the following attributes/variables:a. studentName (String)b. studentNumber (int)sc. regYear(long)d. faculty(String)e. department(String)2. Add the following methods in Student:a. accessors and mutators for all variablesb. toString methodi. Formulate your toString so that it only shows studentName,studentNumber and faculty3. Create a class called MyFriends, with the following attributes variables:a. studentArray(Student[])4. Add the following methods in MyFriends:a. fillArrayi. Using scanner ask how many students does the user want to inputii. Capture user input for all of his friends(Of course we are assuming all your friends would be similarUWC students, go ask around and meet new friends, alsopreferably not in the same Computer Science department … ifpossible … only if possible)b. maini. Call the fillArray methodii. Count how many Computer Science studentsiii. If half or more students are…arrow_forwardSolve B please(A) Write a class called Course having data members: courseNum (String such as ITCS214), courseName (String such as Data Structures), credits (int), section (int). Include the following public methods in the class: Default constructor (without any parameters), constructor with 4 parameters, set and get methods for all attributes, equals and toString methods (B) Write a class called Student having following data fields: idNum (long), firstName (String), lastName (String), gender (char), email (String), coursesRegistered (ArrayList of type Course). Note that coursesRegistered is a list of type ArrayList (Java class) in which each element is of class type Course. The coursesRegistered is the list of courses in which the student is currently registered. It has following methods: Default constructor (without any parameters), constructor with 5 parameters (except for coursesRegistered), set and get methods for all attributes, equals, and printCoursesRegistered. The list…arrow_forwardConsider the following class: public class theClass { private double value; private string str; public static int count; public theClass () { } public theClass (double d, int, x, String s) { } public void print() { } public static void incrementCount() { } } a) How many members do class theClass have? b) Compare the purpose of the two constructors. c) Use the reference this to write the definition of a method print( )to output the value of the instance data members separated by commas. d) Write a statement to create an object myClass of the class theClass and initialise the instance variables to 5, 10.75 and the string Class. e) Write a definition (heading) for a copy constructor for the class.arrow_forward
- Note: Write a Java program given below Question # 1: Define a class for Students with field name, age, marks. Define getter and setter for all the fields. In the setter method, if age is less than 0, print that Age is less than zero. Similarly, if marks is less than zero or greater than 100, print in correct marks and don’t assign marks to member variable. In the Test class, create student’s object and assign the marks and age to appropriate values. Try assigning incorrect values to check if getter and setter methods work as expected.arrow_forwardConsider a class Movie that contains the following information about a movie. The class has the following attributes: Title MPAA Rating (e.g. G, PG, PG-13, R) Number of people who rated this movie as a 1 (Terrible) Number of people who rated this movie as a 2 (Bad) Number of people who rated this movie as a 3 (OK) Number of people who rated this movie as a 4 (Good) Number of people who rated this movie as a 5 (Great) Implement the Movie class such that it is able to contain the above information. Include constructor that would accept two parameters and initialize the movie's title to the value of its first parameter and the movie's MPAA rating to the value of its second parameter, and public rating to 0. Also include access member functions for title and MPAA rating. Include a member function to increment the public rating that will only accept integer values between 1 and 5. Finally, write a member function that would return the average public rating of a movie. Write a…arrow_forwardI tried to get this answered before but I couldn't get the code to work fully from what he gave me. " //Definition of class rectangle public class Rectangle { //Declare required variables private double w; private double h; //No-argument constructor public Rectangle() { //Assign "w" to "1" w = 1; //Assign "h" to "1" h = 1; } //Parameterized constructor public Rectangle(double wid, double ht) { //Assign "wid" to "w" this.w = wid; //Assign "ht" to "w" this.h = ht; } //Method definition for width public double getWidth() { //Return width return w; } //Method definition for height public double getHeight() { //Return height return h; } //Method definition for perimeter public double getPerimeter() { //Return the perimeter return 2.0*(w + h); } //Method definition for area public double getArea() { //Return the area return w*h; } }//Definition of test class public class Test { //Definition of main class public static void main(String[] args) { //Create an object for rectangle class…arrow_forward
- 1) Write a class called Room, which has three private instance variables: a) a double width, representing the width of the room in feet, b) a double length, representing the length of the room in feet, and c) an int floor, representing the building floor that the room is on. 2) Write a default constructor for the class Room that sets the width to 10, the length to 12.5, and the floor to 1. 3) Write get and set methods (“getters” and “setters”) for the three instance variables. For the set methods for the width and length, only positive values should be set. If the input is 0 or a negative number, the variables should not be changed. 4) Write a constructor for the class Room that takes in two double parameters and an int, and sets length to the larger double, width to the smaller double, and floor to the int. Use the setters from part (b). 5) Override the default toString method for the class Room, so when called by an instance of Room created by the default constructor from part (a)…arrow_forwardWrite a class called Book having the following data members: title (String), author1 (String), author2(String), publisher (String), yearPublication (int), isbn (String), accessionNum (long), issuedTo (LibMember). Include following public methods in the class: Default constructor (without any parameters), constructor with 6 parameters (except for issuedTo – initialize issuedTo to null), set and get methods for all attributes, equals and toString. NOTE: The ISBN is a unique 13 digit number assigned by the publisher. It is like barcode. As there can be multiple copies of a book in a library, the libraries assign a unique number, called accession number, to every book in the library to keep track of the books in the library. Assume that accession number starts from 1001.arrow_forwardcan you please answer number 4 for me 1. Create a class called Student, with the following attributes/variables:a. studentName (String)b. studentNumber (int)sc. regYear(long)d. faculty(String)e. department(String)2. Add the following methods in Student:a. accessors and mutators for all variablesb. toString methodi. Formulate your toString so that it only shows studentName,studentNumber and faculty3. Create a class called MyFriends, with the following attributes variables:a. studentArray(Student[])4. Add the following methods in MyFriends:a. fillArrayi. Using scanner ask how many students does the user want to inputii. Capture user input for all of his friends(Of course we are assuming all your friends would be similarUWC students, go ask around and meet new friends, alsopreferably not in the same Computer Science department … ifpossible … only if possible)b. maini. Call the fillArray methodii. Count how many Computer Science studentsiii. If half or more students are Computer Science…arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
EBK JAVA PROGRAMMINGComputer ScienceISBN:9781337671385Author:FARRELLPublisher:CENGAGE LEARNING - CONSIGNMENT
Microsoft Visual C#Computer ScienceISBN:9781337102100Author:Joyce, Farrell.Publisher:Cengage Learning,
EBK JAVA PROGRAMMING
Computer Science
ISBN:9781337671385
Author:FARRELL
Publisher:CENGAGE LEARNING - CONSIGNMENT
Microsoft Visual C#
Computer Science
ISBN:9781337102100
Author:Joyce, Farrell.
Publisher:Cengage Learning,
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