When you create a class and want to include the capability to compare its objects so they can use the Array.Sort() or Array.BinarySearch() method, you must Two of these are true. be careful not to override the existing IComparable.CompareTo() method write a CompareTo() method for the class include at least one numeric field within the class

When you create a class and want to include the capability to compare its objects so they can use the Array.Sort() or Array.BinarySearch() method, you must Two of these are true. be careful not to override the existing IComparable.CompareTo() method write a CompareTo() method for the class include at least one numeric field within the class

Microsoft Visual C#

7th Edition

ISBN:9781337102100

Author:Joyce, Farrell.

Publisher:Joyce, Farrell.

Chapter9: Using Classes And Objects

Section: Chapter Questions

Problem 20RQ

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1. Declare an array to save 4 Dog objects. The Dog class is provided below. Look into the Dog class and find what attributes are needed for a dog object. Then initialize five dogs with the following information: Lily, 5 years old Jacob, 2 years old Sugar, 8 years old Bush, 3 years old 2. Print out every dog using a for loop (use either regular for loop or for-each loop, your choice). But you may find when you print out, the name and age are not displayed. Why? 3. Fix this problem by implementing the toString method in the Dog class. Dog Class: public class Dog { private String name; private int age; public Dog(String name, int age) { this.name = name; this.age = age; } public void setName(String name) { this.name = name; } }
Write code for a test class with the following details:1. Create an object of each class mentioned in Question 3, assuming the values for the data members of each class. Create an array that takes the objects of ALL the classes as its elements. Write an enhanced for loop to display the object details. 2. the dealer in Question 4 decides to offer 2% percent discount on the commission at runtime. Write codewith explanation. 3. Add code to the test class that writes the invoice details of Question 6 to a txt document Syntax of the q3 code is given below: import java.util.*; class Car{ //class car String[] name; int reg_number,eng_number, chassis_num,status; String[] city, model, color, date_reg,date_arr,type; float price; float abstract calculate (float price); } class Dealer extends Car{ //inherits from Car String[] deal_name, deal_id, deal_add, deal_pno; float dealer_com ; float abstract calculate (float price) { dealer_com= 0.01*price +…
Create a BowlingTeam class The class has 2 fields: a field for the team name and an array that holds the team members’ names. Create get and set methods for the teamName field. Add a setMember method that sets a team member’s name. The method requires a position and a name, and it uses the position as a subscript to the members array. Add a getMember method that returns a team member’s name. The method requires a value used as a subscript that determines which member’s name to return. Create a BowlingTeamDemo class. In the main method include the following: Declare 2 variables: name and a constant NUM_TEAMS that holds 4 Bowling Team objects. Declare and instantiate an array teams of BowlingTeam objects. Using nested for loops, prompt the user to enter the 4 team names and enter the team members’ names. Using another nested for loop, output each team’s name and their team members’. Output should look like: Members of team The Lucky Strikes Carlos Diego Rose Lynn Members of team I…
Task on Key index Searching & Sorting Create a KeyIndex class with the following properties : Fields: int [ ] k; Description An array of integers. Note: You may maintain another global variable if needed (but you can’t use more than one). Constructor: KeyIndex(int [ ]a) Description: This constructor takes an array of integers a and populates array k with the element in a as indices into k. Note: make sure the build-up of your array k supports negative and non-distinct integers. Methods: search (int val) Description: This method searches for the value val within the array and returns true if found or false otherwise. sort () Description: This method will return the sorted form of the array that had been passed into the constructor. NOTE: Create a tester class or write tester statements to check whether the methods in your KeyIndex class work properly. You need to submit both the classes as a part of your assignment.…
JavaDriver Program Write a driver program that contains a main method and two other methods. Create an Array of Objects In the main method, create an array of Food that holds at least two foods and at least two vegetables. You can decide what data to use. Method: Print Write a method that prints the text representation of the foods in the array in reverse order (meaning from the end of the array to the beginning). Invoke this method from main. Method: Highest Sugar Food Write a method that takes an array of Food objects and finds the Food that has the most sugar. Note that the method is finding the Food, not the grams of sugar. Hint: in looping to find the food, keep track of both the current highest index and value. Invoke this method from main.
Create a class named "Hotel" (3 marks) - The class must have 4 attributes. (Choose any 4 attributes you want) - This class must have two constructors, Getter Methods, and Setter Methods. - toString() method should return the name of the hotel.  In the main class that has the main method: - In the main method, Create 4 objects or more from the class Hotel and store them in a normal array. (3 mark) - Create an external method that takes the array as an argument. It will add all the elements of the normal array into an ArrayList. Then, call the method to test it and print all elements data from the ArrayList
Library class: Fields: books as arraylist to store all the books available in the library B3 B1 B2 В4 B5 Constructor: Library() } : No parameterized constructor to create the books object Methods: 1. addBook(Book bookobj): to add a new book to the arraylist; send the book object as a parameter to this method. 2. searchBook(String name): search a book by a given name in the arraylist. if exits print bookX found; otherwise print not found!!! 3. RemoveBook(String name): to delete a book object from arraylist by a given name: Hint: you need to use iterator class and remove method. Book class: Fileds: bookld, bookname. Constructor: two parameterized constructor that accepts name a parameter Book(int ID, String name) ..... Methods: 1. Accessor method to return the name of the book 2. Mutator method to change the id of the book. Use this Main method: in your program: public static void main(String args[]) { Library lib=new Library(); lib.addBook(new Book("b1")); lib.addBook(new Book("b2"));…
Determine if the following statement are true or false Screen shot shows the text's arraycollection When comparing two objects using the == operator, what is actually compared is the contents of the objects. The equals method of the Object class returns true only if the two objects being compared have identical attributes. A collection allows retrieval of information based on the size of the information. With the text's array-based collection implementation, the set of stored elements is scattered about the array.
For this assignment, you need to build a class that contains basic information about students and courses that have those students on the roster. You also need to build a menu that supports basic CRUD functionality for those courses. The requirements are as follows: The student class should contain the following data about a student: Name (dynamic char array) Classification (char) Major (dynamic char array) StudentId (can be an int or a dynamic char array) The course class should contain the following data about a course: Course Name (dynamic char array) Course Code (char array of size 7) Location (char array of size 10) Roster (dynamic student array) The menu program should act as a driver program that manages a dynamically allocated array of courses and allows the user to: Add a course to the list Add students to a course Update a course to change any of the data above including edits to students or adding/removing students from the roster List courses including students in the…
please help me with the pseudocode of the program for the project. Need a class which will contain: Student Name Student Id Student Grades (an array of 3 grades) A constructor that clears the student data (use -1 for unset grades) Get functions for items a, b, and c, average, and letter grade Set functions for items a, n, and c Note that the get and set functions for Student grades need an argument for the grade index. Need another class which will contain: An Array of Students (1 above) A count of number of students in use You need to create a menu interface that allows you to: Add new students Enter test grades Display all the students with their names, ids, test grades, average, and letter grade Exit the program Add comments and use proper indentation. Nice Features: I would like that system to accept a student with no grades, then later add one or more grades, and when all grades are entered, calculate the final average or grade. I would like the system to display the…
continue from first question, Client class:The client program will allow entry of these data for several different student into an ArrayList and then perform some analysis and queries.Your client class (program) will provide the user with a menu to perform the following operations. You will also need to load the information of the students from a CSV file (student.csv) before displaying the menu. You only need one ArrayList and one menu for this. For the csv file, your first item can be U or G to differentiate whether the entry is creating a UndergraduateStudent object, or a GraduateStudent object. You can then decide how you want other data to be listed in the csv file. You should specify clearly in your documentation the data format of the CSV files used in this assignment.1. Quit (exit the program)2. Add (to the ArrayList) all the marks information about an undergraduate or graduate student by reading it from another CSV file. Your program will ask for the file name.3. Given student…
This class will allow a user to enter 5 scores into an array. It will then rearrange the datain descending order and calculate the mean for the data set.Attributes: data[]— the array which will contain the scores mean — the arithmetic average of the scoresMethods: Average — the constructor. It will allocate memory for the array. Use a forloop to repeatedly display a prompt for the user which should indicate that userCopyright © 2019 Pearson Education, Inc., Hoboken NJshould enter score number 1, score number 2, etc. Note: The computer startscounting with 0, but people start counting with 1, and your prompt should accountfor this. For example, when the user enters score number 1, it will be stored inindexed variable 0. The constructor will then call the selectionSort and thecalculateMean methods. calculateMean — this is a method that uses a for loop to access each scorein the array and add it to a running total. The total divided by the number ofscores (use the length of the array),…