in java pleaseit is all one questionProblem 1. Modify the Firm example from this chapter such thatall employees can be given different vacation options dependingon their classification. Provide a method called vacation thatreturns the number of vacation days a person has. Give allemployees a standard number of vacation days (10), then overridethe method in the various employee classes as appropriate.Modify the driver program to demonstrate this new functionality.Problem 2. Modify the Firm project discussed in class such that itaccomplishes its polymorphism using an interface called Payable,containing the pay method.Extra Credit (the Comparable interface. Staff members can be comparablebased on their pay. Modify the driver program to display the firm'smembers in increasing order of their pay. (You may use any of thealready implemented searching methods in the lecture.)Modify the Firm project to also implement

//Staff.java public class Staff { private StaffMember[] staffList; public Staff () { staffList…

piea s all one question roblem 1. Modify the Firm example from this chapter such that employees can be given different vacation options depending their classification. Provide a method called vacation that turns the number of vacation days a person has. Give all nployees a standard number of vacation days (10), then override e method in the various employee classes as appropriate. odify the driver program to demonstrate this new functionality. oblem 2. Modify the Firm project discussed in class such that it complishes its polymorphism using an interface called Payable, entaining the pay method. tra Credit e Comparable interface. Staff members can be comparable sed on their pay. Modify the driver program to display the firm's embers in increasing order of their pay. (You may use any of the ready implemented searching methods in the lecture.) Modify the Firm project to also implement

piea s all one question roblem 1. Modify the Firm example from this chapter such that employees can be given different vacation options depending their classification. Provide a method called vacation that turns the number of vacation days a person has. Give all nployees a standard number of vacation days (10), then override e method in the various employee classes as appropriate. odify the driver program to demonstrate this new functionality. oblem 2. Modify the Firm project discussed in class such that it complishes its polymorphism using an interface called Payable, entaining the pay method. tra Credit e Comparable interface. Staff members can be comparable sed on their pay. Modify the driver program to display the firm's embers in increasing order of their pay. (You may use any of the ready implemented searching methods in the lecture.) Modify the Firm project to also implement

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

data structures in java
JAVA A company needs to develop an object-oriented library with a few Java classes forthe following task. Overall, they want the classes to model the geometric shapes and calculatetheir areas. These geometric shapes include Square, Rectangle, Circle, and Triangle.The above four shapes share common attributes such as name and color. The area of a shapecan be calculated by using a method area( ) which can be implemented only until the exactshape is known. Different shapes need a different area( ) method.1) Design a Java abstract class called Shape to model this situation, which will serve as a parentclass. Write its code;2). All the above shapes should be drawable by the users by calling the draw( ) method.Different shapes are drawn differently. You should design a Java interface named Drawableto provide this method for the shape classes to implement in their own ways. Write its code;3). Write the code for the four classes: Square, Rectangle, Circle, and Triangle.Note:• You should decide…
Task 2: General AbstractsFor this task you will be asked to create the Java classes described in the UMLdiagram in Task 1.Instructions1. The class Person has the following implementations in addition to thosespecified above:• the dateOfBirth attribute is of type java.util.Date• public getter methods for the attributes• a public constructor Person with the following method signature:public Person(String idNumber, String name, Date dateOfBirth)• declare an abstract compareTo method in Person with the followingsignature:public int compareTo(Person p);2. The class called VaccineRecord has the following extra details:• the enum called VaccineType has the following possible values:JJ,AZ,MD,PF• the public constructor for the VaccineRecord has the following signa-ture:public VaccineRecord(VaccineType type, String batchCode);• the date attribute is of type java.util.Date3. The class called Patient that extends the Person class has the followingadditional attributes and behaviours:• the public…
In this project, a rational number is defined as a fraction in which the numerator and denominator are integers with the denominator being non-zero. Requirements To ensure consistency among solutions each implementation must implement the following requirements. • Your implementation should reflect the definition of a simplified rational number at all times. • A long (integer) is used to represent both the numerator and denominator. • The Rational class must be able to handle both positive and negative numbers. • The rational number must be in simplest form after every operation; that is, 8 6 shall be immediately reduced to 4 3 . In order to simplify a rational number properly, use the the Euclidean Algorithm to determine the greatest common divisor of the two numbers. • All methods that have an object as parameter must be able to handle an input of null. • By definition, the denominator of a fraction cannot be zero since it leads to an undefined value. In Java, this division by zero…
Your assignment for this course is to implement a beginner level Book Management System (BMS) in Java language. BMS contains 2 classes: Bookand BookList. The Book class has the following attributes: code: a String object, that hold the book’s code. title: a String object, that hold the book’s title. qua: int variable, that hold the number of books with the same code in the library. price: a double variable, that hold the book’s price. The BookList class contains only one data member: ArrayList<Book> t. When running the program display the menu as below:1. Input & add book(s) to the end.2. Display all books.3. Search a book for given code.4. Update the book’s price for given code.5. Find the (first) max price value.6. Sort the list ascendingly by code.7. Remove the book having given code.8. Load data from file.0. Exit.Notes:(1) The book’s code must be unique in the list.(2) Display all books in format (code, title, quantity, price).(5)…
Using JAVA
Convert the following UML diagram into the Java code. Write constructor, mutator and accessor methods for the given class. Create an instance of the class in a main method using a Demonstration class. Note: The structure of the class can be compiled and tested without having bodies for the methods. Just be sure to put in dummy return values for methods that have a return type other than void. Exercise Log ExerciseID: integer ExerciseCategory: string TimeSpent: float Calories: float
It should be written in Python
This is the question: Design and implement a class called Bug, which represents a bug moving along a horizontal wire. The bug can only move for one unit of distance at a time, in the direction it is facing. The bug can also turn to reverse direction. For your design, create a UML Class diagram similar to Figure 5.5 on page 180 of the textbook. Note that you need to include the constructor in the methods section if you code a constructor. Bug will require a toString method to return the current position and which direction the bug is facing to the driver so it can be output.Hint: Remember that a horizontal line has a zero position in the middle with positive to the right and negative to theleft. Consider that a bug will land on the wire at some point before starting along the wire.Write an interactive test driver that instantiates a Bug, then allows the user to manipulate it with simple commands like Output (to see the position and direction), Move, Turn, Exit ... single letters work…
Please write Java Code per the instructions and make sure code compiles before submitting. Thank you!
Student Information: student_id, civil_id name, address, phone number, email (Class that contain overloaded method) 1.Draw the Class diagram(UML Diagram). 2.Write a JAVA program for Student Information using method overloading concept (Object Class and Driver Class)
Write the Movie class. The UML diagram of the class is represented below: 1. Implement the class strictly according to its UML one-to-one (do not include anythingextra, and do not miss any data fields or methods). 2. Implement a MovieTest class to test the class Movie you just created.• Create two Movie objects: one using the no-args constructor and one from theconstructor with all fields.• Print the contents of both objects. Please submit a screenshot. Hint: toString()method.