Below is code that defines a Quadrilateral class (a shape with four sides), which has four floating point instance variables that correspond to the four side lengths: import math class Quadrilateral: definit__(self, ab,c,d): self.a = a self.b = b self.c = c self.d = d def perimeter (self): return self.a + self.b + self.c + self.d def area (self): print("Not enough information") def_lt__(self, other): return self.perimeter () < other.perimeter ()

Below is code that defines a Quadrilateral class (a shape with four sides), which has four floating point instance variables that correspond to the four side lengths: import math class Quadrilateral: definit__(self, ab,c,d): self.a = a self.b = b self.c = c self.d = d def perimeter (self): return self.a + self.b + self.c + self.d def area (self): print("Not enough information") def_lt__(self, other): return self.perimeter () < other.perimeter ()

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

See similar textbooks

Similar questions

JAVA PROGRAMMING Write two java files for this assignment: Circle.java, and Main.java. The Circle.java file will create an actual class. The Circle class: MEMBER VARIABLE double radius double x double y Eight methods: Six of the methods are simple: getter’s and setter’s for x, y, and radius. There should also be a getArea method that returns the area (derived from the radius) A doesOverlap method. This method should accept a Circle as an argument, and return true if this circle overlaps the circle that the method was invoked on. [Note: two circles overlap if the sum of their radius' is greater than or equal to the distance between their centers.] void setX(double value) double getX() void setY(double value) double getY() void setRadius(double value) double getRadius() double getArea() boolean doesOverlap(Circle otherCircle) second class will be the typical replit Main class, with its static main method .It should contain code that tests the Circle class. submit code that…
Implement the following classes: Polygon numSide: int /* constructor */ /* accessor-mutator */ + area (): double + perimeter (): double Triangle sideA: double sideB: double sidec: double /* constructor */ /* accessor-mutator */ + area () : double + perimeter (): double Create an object for Triangle class and invoke area and perimeter method. Input Format Take triangle sides (sideA,sideB,sideC) as input from user. Constraints For Triangle, sideB+sideC > sideA
Java - Access Specifiers Create a class named Circle that has attributes radius, area, and circumference and make the attributes private. Make a public method that sets the radius and a method that prints all attributes. Ask the user input for radius. Note: Use the PI from the math functions Inputs A line containing an integer 10 Sample Output Radius: 20 Area: 1256.64 Circumference: 125.66
In Python, #Create a basket class, which has a class/static attribute pricelist (string/float dictionary - you can hardcode this) #The constructor should set the name to the name passed as a parameter and initialise the contents (empty) #You should provide an addItem method taking product,quantity which adds this to the contents #and a getQuantity method taking a product, which returns the relevant quantity
Java Program The assignment requires two classes. Put all classes in the same package. Class Employee Attributes (all private): id: String lastName: String firstName: String salary: int Methods: Parameterized constructor for initializing a new Employee instance Getters for all attributes toString method to display an Employee's attributes (See output of executable below) Executable Class Create an array of at least eight Employee objects. Be sure to use many with identical last names, but don't order them by name in the array. Create an ArrayList from the array. Sort the ArrayList first by last name and then by first name. Using the forEach method and a lambda expression, print all employees alphabetically sorted by name. Create a LinkedList from the ArrayList. Create an iterator capable of cycling both forward and backward through the LinkedList. Iterate forward through the LinkedList without generating any output. Then iterate backwards through the LinkedList to print…
Using java Hamburger ClassWrite a Hamburger class with the following six attributes:• bun - the type of bun the burger will be on• patties - the number of patties on the burger• cheese - whether or not the burger will have cheese• price - the price of the burger• toppings - an array of five toppings; it will need to start empty Write getters/setters for all attributesexcept the toppings array.Your constructor should create a single on white with no cheese and no toppings with a price of $2.99.Your class should include the following methods in this order, please: addCheese - this method has noparameters that adds cheese to the burger and increases the price by 75 centssuperSizeIt - this method has no parameters and adds a patty to the burger and increases the price by 1.50addToppings - this method would present the user with at least five toppings (your choice) stored in an array of Stringobjects. If the user indicates the wants the item, store the String in the toppings array. There…
Computer Science You are required to develop a small chatting application where two or more friends can communicate each other through messages. Create a class Message which has Date d, and message (string). Provide getters/setters, constructors, toString. Create a class Friend having String name, String contact, email and ArrayList of Messages provide getters/setters, constructors, toString addMessage(Message m) method which will add new message to the list. Provide following options to the user using JFrame. Login which will help user login to the application. View Friends (Display List of All Friends) View Messages ( This should display all message of a Friend) Send message (This should ask for friend name and message match the friend name and write that message to the array list).
Create a RightTriangle class given the following design: RightTriangle variables: base, height methods: 2 constructors, 1 that set default values and another that accepts to parameters. setBase - changes the base. Requires one parameter for base. setHeight - changes the height. Requires one parameter for height. getBase - returns the triangle base. getHeight - returns the triangle height. area - returns the area of the triangle (1/2bh) given the current base and height
JAVAclass: Main.java, Quadratic.java, TestQuadratic.java Create a class called Quadratic for representing a one-variable quadratic expression of the form: ax2 + bx + c a,b and c here are the coefficients. The class should contain the following methods: * A constructor that accepts values for a, b, and c. * public double getA() * public double getB() * public double getC() * public double evaluate (int x) * will return the value of the expression at point x * public double discriminant() - that will return (b2 - 4ac) * public boolean isImaginaryRoots() - roots are imaginary if (b2 - 4ac) < 0 * public boolean isRealRoots() - roots are real if (b2 - 4ac) >= 0 // these methods can only be invoked if the roots are not imaginary * public float firstRoot() * public float secondRoot() * public boolean isPerfectSquare(); // If the first and second roots are equal * Try to override the toString methods * Write a sample main program that will work as shown below. Example output:…
JAVA PROGRAM Chapter 7. PC #1. Rainfall Class Write a RainFall class that stores the total rainfall for each of 12 months into an array of doubles. The program should have methods that return the following: • the total rainfall for the year • the average monthly rainfall • the month with the most rain • the month with the least rain Demonstrate the class in a complete program. Main class name: RainFall (no package name) NOTE, THE MAIN CLASS NAME needs to be Rainfall as mentioned above AND IT HAS TO PASS ALL THE TEST CASES WHEN I UPLOAD IT TO HYPERGRADE. THANK YOU Enter the rainfall amount for month 1:\n1.2ENTEREnter the rainfall amount for month 2:\n2.3ENTEREnter the rainfall amount for month 3:\n3.4ENTEREnter the rainfall amount for month 4:\n5.1ENTEREnter the rainfall amount for month 5:\n1.7ENTEREnter the rainfall amount for month 6:\n6.5ENTEREnter the rainfall amount for month 7:\n2.5ENTEREnter the rainfall amount for month 8:\n3.3ENTEREnter the…
Assignment:The BankAccount class models an account of a customer. A BankAccount has the followinginstance variables: A unique account id sequentially assigned when the Bank Account is created. A balance which represents the amount of money in the account A date created which is the date on which the account is created.The following methods are defined in the BankAccount class: Withdraw – subtract money from the balance Deposit – add money to the balance Inquiry on:o Balanceo Account ido Date created
Create an Employee class. Attributes(must be private): Employee has a name and basic_salary Methods:Employee(string, float); //ConstructorAllowances are computed as: float getHouseRent(); //House rent is 45% of the basic pay. float getMedicalAllowance(); //Medical Allowance is 5% of the basic pay. float getConveyanceAllowance(); //Conveyance allowance is 10% of the basic payfloat getGrossPay(); //Salary including rent and allowances{You can implement additional function/s if needed} Then Create an Organization class. Organization has 10 Employees (Hint: You will need an array of pointers to Employee class) Organization can calculate the total amount to be paid to all employees Organization can print the details(name & salary) of all employees Note: Use main,header and functions.cpp to write code.