Answered: By using the following line, a new…

Engineering

Computer Science

By using the following line, a new instance of the Transcript class will be created.

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Complete the Course class by implementing the courseSize() method, which returns the total number of students in the course. Given classes: Class LabProgram contains the main method for testing the program. Class Course represents a course, which contains an ArrayList of Student objects as a course roster. (Type your code in here.) Class Student represents a classroom student, which has three fields: first name, last name, and GPA. Ex. For the following students: Henry Bendel 3.6 Johnny Min 2.9 the output is: Course size: 2 public class LabProgram { public static void main (String [] args) { Course course = new Course(); // Example students for testing course.addStudent(new Student("Henry", "Bendel", 3.6)); course.addStudent(new Student("Johnny", "Min", 2.9)); System.out.println("Course size: " + course.courseSize()); } } public class Student { private String first; // first name private String last; // last name private…
You have created the following class called Course: public class Course { private String code; private long grade; } public String getCode() { return code; } public void setCode (String code) { this.code = code; } public long getGrade() { return grade; } public void setGrade (long grade) ( this.grade grade; } How would you use aggregation in a Student class to show that a student has one or more courses? public class Student { private ArrayList coursel } public class Student extends Course private ArrayList coursel public class Student extends Course public class Student { private Course courseList; }
Using an appropriate package and test class name, write the following tests for GamerProfile's constructor: testNameShouldNotBeNull testNameShouldNotBeEmpty testNameShouldNotBeBlank testShouldCreateValidGamerProfile Hint: use assertTrue or assertFalse for getters involving boolean values Hint: get the game list from the gamer and call the list's isEmpty along with an assertTrue or assertFalse, as appropriate.GamerProfile:public class GamerProfile { private String userName; private boolean pvpEnabled; private boolean online; private ArrayList<GameInfo> gameLibrary; public GamerProfile(String userName) { this.userName = userName; this.pvpEnabled = false; this.online = false; gameLibrary = new ArrayList<GameInfo>(); } // Getter for the getUserName variable public String getUserName() { return userName; } // Getter for the PvpEnabled…
Elevator simulation. I need help fixing this class The Simulation Class initializes and holds objects for Passengers, Elevators, and Floors. It reads and parses input files to create the necessary objects and sets the number of simulation iterations. The class also has methods to move the elevators up and down the building, as well as to pick up and drop off passengers. public class Simulation { private int numFloors; private ArrayList<Passenger> passengers; private ArrayList<Elevator> elevators; private ArrayList<Floor> floors; private int numIterations; public Simulation(String inputFile) throws FileNotFoundException { passengers = new ArrayList<>(); elevators = new ArrayList<>(); floors = new ArrayList<>(); // Read input file and initialize simulation parameters Scanner scanner = new Scanner(new File(inputFile)); while (scanner.hasNextLine()) { String line =…
Each object that is created from its "template" is called a(n) ?
Create a class called StudentBirthYear. It should only have two members, both of them arrays. One of type string called Names. The second of type int called BirthYears. Now in your main class create a StudentBirthYear object. Make sure both arrays are of the size 13. Add thirteen different names and thirteen different birth years. Then display each name with its birth year using only 1 for loop. Only use a for loop, no other kind of loop.
The Delicious class – iterative methods The Delicious class must:• Define a method called setDetails which has the following header: public void setDetails(String name, int price, boolean available) This must find in the ArrayList the Chicken with the given name, change itspricePerKilo to the given price parameter and set whether it is in stock or not. A value of true for the available parameter means the chicken is in stock and a value of false means it is sold out (not in stock). Note that there will only be at most one Chicken object of the given name stored in the ArrayList.• Define a method called removeChicken that takes a single String parameter representing a chicken’s name. This method must remove from the ArrayList the Chicken object (if any) with the given name. The method must return true if a cheese with the given name was found and removed, and false otherwise.The Delicious class – challenge method In the Delicious class complete the findClosestAvailable method: This…
In python and include doctring: First, write a class named Movie that has four data members: title, genre, director, and year. It should have: an init method that takes as arguments the title, genre, director, and year (in that order) and assigns them to the data members. The year is an integer and the others are strings. get methods for each of the data members (get_title, get_genre, get_director, and get_year). Next write a class named StreamingService that has two data members: name and catalog. the catalog is a dictionary of Movies, with the titles as the keys and the Movie objects as the corresponding values (you can assume there aren't any Movies with the same title). The StreamingService class should have: an init method that takes the name as an argument, and assigns it to the name data member. The catalog data member should be initialized to an empty dictionary. get methods for each of the data members (get_name and get_catalog). a method named add_movie that takes a Movie…
1. Create a UML using the UML Template attached. 2. In this lab, you will be creating a roulette wheel. The pockets are numbered from 0 to 36. The colors of the pockets are as follows: Pocket 0 is green. For pockets 1 through 10, the odd-numbered pockets are red and the even-numbered pockets are black. For pockets 11 through 18, the odd-numbered pockets are black and the even-numbered pockets are red. For pockets 19 through 28, the odd-numbered pockets are red and the even-numbered pockets are black. For pockets 29 through 36, the odd-numbered pockets are black and the even-numbered pockets are red. Create a class named RoulettePocket. The class's constructor should accept a pocket number. The class should have a method named getPocketColor that returns the pocket's color, as a string. Demonstrate the class in a program that asks the user to enter a pocket number, and displays whether the pocket is green, red, or black. The program should display an error message if the user…
User.java User is a class that represents a user in the music player application. Every User contains a library which stores all their Playlists. A User can create Playlists or add Playlists made by other users to their library. Additionally, they can also share Playlists with other Users. Each User has the following attributes: username - Represents the username of the user The name of a user should never be null library Represents the library of the User. A list that contains all the playlists the user has created or added. Every user's library will start with a playlist called "Liked" which stores the songs that the user has liked. This playlist should have a creation Date of 0. Save for the Liked playlist, a user's library should be sorted in order of recency. That is, a more recently created playlist should appear earlier than an older one. currentPlaying Represents the song the user is currently listening to. -If it is null, then the user is not listening to any song. User should…
• RectangleTest class: o Perform the following actions in the main method: • Create an object named r1 of the Rectangle class using the default constructor. • Using the set methods, initialize rl to have width 3.0 and length 5.2. • Use the printDimensions method to output all the data (width & length) related to r1. • Create another object named r2 of the Rectangle class with width 2.6 and length 5.4 using the overloaded constructor. • Print out r2 (width & length) using the get methods. • Print out the area and the perimeter of r1 using the calculateArea and calculatePerimeter methods. • Print out the area and the perimeter of r2 using the calculateArea and calculatePerimeter methods.
forceAppliedValue and contactAreaValue are read from input. Declare and assign pointer myBallObject with a new BallObject object. Then, set myBallObject's forceApplied and contactArea to forceAppliedValue and contactAreaValue, respectively. Ex: if the input is 6.5 7.5, then the output is: BallObject's forceApplied: 6.5 Ballobject's contactArea: 7.5 1 #include 2 #include 3 using namespace std; 5 class Ballobject { 6 public: 8 9 Ballobject(); void Print (); 10 11 12 }; 13 Ballobject::Ballobject() { 14 15 double forceApplied; double contactArea; Check forceApplied = 0.0; contactArea = 0.0; 16 } 17 void Ballobject::Print() { 18 cout << "Ballobject's forceApplied: << fixed << setprecision (1) << forceApplied << endl; 1 CS Scanned with CamScanner I Next level 2 3 4 5 DD-D- D