The Contact class implements the Comparable interface and therefore provides a definition of the compareTo method. In this case, the contacts are sorted by last name; if two contacts have the same last name, their first names are used.

The Contact class implements the Comparable interface and therefore provides a definition of the compareTo method. In this case, the contacts are sorted by last name; if two contacts have the same last name, their first names are used.

Microsoft Visual C#

7th Edition

ISBN:9781337102100

Author:Joyce, Farrell.

Publisher:Joyce, Farrell.

Chapter9: Using Classes And Objects

Section: Chapter Questions

Problem 19RQ

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Part 2: Sorting the WorkOrders via dates Another error that will still be showing is that there is not Comparable/compareTo() method setup on the WorkOrder class file. That is something you need to fix and code. Implement the use of the Comparable interface and add the compareTo() method to the WorkOrder class. The compareTo() method will take a little work here. We are going to compare via the date of the work order. The dates of the WorkOrder are saved in a MM-DD-YYYY format. There is a dash '-' in between each part of the date. You will need to split both the current object's date and the date sent through the compareTo() parameters. You will have three things to compare against. You first need to check the year. If the years are the same value then you need to go another step to check the months, otherwise you compare them with less than or greater than and return the corresponding value. If you have to check the months it would be the same for years. If the months are the same you…
Sally and Harry implement two different compareTo methods for a classthey are working on together. Sally’s compareTo method returns −1, 0, or +1,depending on the relationship between two objects. Harry’s compareTo methodreturns −6, 0, or +3. Which method is suitable?
The Contact class implements the Comparable interface and thereforeprovides a definition of the compareTo method. In this case, the contacts aresorted by last name; if two contacts have the same last name, their first namesare used.
Write a class Point for 2D Cartesian co-ordinates. The class should have 2 fields: abscissa(x) and ordinately). The class should have a method which takes a Point object as parameter and finds the distance between the two points (calling object & argument). The class should also have a static method that takes 2 point objects and returns their midpoint as a new Point object. (No driver class or no other methods required) The distance (d) between 2 points (x1, y1) and (x2, y2) is given by: d = (x1 – x2)2 + (y1 – y2)² The midpoint (x3, y3) between 2 points (x1, y1) and (x2, y2) is given by: x3 = (x1+x2)/2 y3 = (y1+y2)/2
An object of the class Timer is used to indicate when a certain amount of time (in seconds) has elapsed, after which it provides a “DING”. The required data field is remainingTime which is the number of seconds until the “DING”. When a Timer object is constructed, it is set with the desired number of seconds. When the timer “ticks”, it is one second closer to the “DING”. This is represented with the tick() method. The dingCheck() method indicates whether the timer should be “DINGING”. Provide the code for the constructor method, and the methods getRemainingTime(), tick(), and dingCheck(). public class Timer { // Methods // Data private int remainingTime; }
Suppose a call center has three levels of employees: respondent, manager, and director. An incoming telephone call must first be allocated to a respondent who is free. If the respondent cannot handle the call, the call must be escalated to a manager. If the manager is occupied, then the call should be escalated to a director. Design YOUR OWN classes and data structures for this problem. Implement a method dispatchCall() that assigns a call to the first available employee.
In this problem you will first write an interface and then modify classes to implement the interface. Write an interface, GeometricSolid, which has one method, volume. The volume method takes no arguments and returns a double. You are provided with three classes: Cylinder, Sphere, and RightCircularCone Modify the classes so that they implement the GeometricSolid interface. Supply the appropriate method for each class. You can use Google search to find the formula for the volume. Make sure that you use Math.PI in your calculations. Notice in InterfaceRunner that the objects are added to an ArrayList of GeometricSolids. Provide Javadoc. Cylinder.java /*** Models a Cylinder*/public class Cylinder {private double radius;private double height; /*** Constructor for objects of class Cylinder* @param radius the radius of the Cylinder* @param height the height of this Cylinder*/public Cylinder(double radius, double height){this.radius = radius;this.height = height;}/*** Gets the radius of this…
using python language Suppose a call center has three levels of employees—respondent, manager, and director. An incoming telephone call must first be allocated to a respondent who is free. If the respondent cannot handle the call, the call must be escalated to a manager. If the manager is occupied, then the call should be escalated to a director. Design your own classes and data structures for this problem. Implement a method dispatchCall() that assigns a call to the first available employee.
The Doctor program described in Chapter 5 combines the data model of a doctor and the operations for handling user interaction. Restructure this program according to the model/view pattern so that these areas of responsibility are assigned to separate sets of classes. The program should include a Doctor class with an interface that allows one to obtain a greeting, a signoff message, and a reply to a patient’s string. To implement the greeting, define a method named greeting for the Doctor class. To implement the signoff message, define a method named farewell for the Doctor class. Both greeting and farewell should return a string with a greeting or farewell message respectively. The reply function is defined for you, it should be added as a method for the Doctor class. The rest of the program, in a separate main program module, handles the user’s interactions with the Doctor object. Develop this program with a terminal-based user interface. Note: The program should output in the…
A. Writing an Interface In this problem you will first write an interface and then modify classes to implement the interface. Write an interface, GeometricSolid, which has one method, volume. The volume method takes no arguments and returns a double. You are provided with three classes: Cylinder, Sphere, and RightCircularCone Modify the classes so that they implement the GeometricSolid interface. Supply the appropriate method for each class. You can use Google search to find the formula for the volume. Make sure that you use Math.PI in your calculations. Notice in InterfaceRunner that the objects are added to an ArrayList of GeometricSolids. since I couldn't fit all images with two screen shots I left the link here link: https://codecheck.it/files/18040616319p6jy6gzkdzuq08nmlp81251t
In Java, declaring a class abstract is useful ... When it doesn't make sense to have objects of that class. To prevent developers from further extending the class. When default implementations of some methods are not desirable. When it makes sense to have objects of that class.
Add a list of procedures in your patient class, fill them and print them with the patient data. This is called composition which is a "has a" relationship. A patient has procedures. Write a class named Patient that has attributes for the following data: First name, middle name, and last name Address, city, state, and ZIP code Phone number Name and phone number of emergency contact The Patient class’s _ _init_ _ method should accept an argument for each attribute. The Patient class should also have accessor and mutator methods for each attribute. Next, write a class named Procedure that represents a medical procedure that has been performed on a patient. The Procedure class should have attributes for the following data: Name of the procedure Date of the procedure Name of the practitioner who performed the procedure Charges for the procedure The Procedure class’s _ _init_ _ method should accept an argument for each attribute. The Procedure class should also have accessor and mutator…