1I need the code in Java for this digram for the system library, but the code must contain the details in the table shown, as well as a screenshot in netbeans Library-location-librarian idBooks Database-book Title-bookAuthor-bookld+update()Librarian-name-librarian id+issueStatus()+searchBook()+verifyMember()+issueBook()+payment()Patron-details-patronld+search()+request()+payFine()Vendor-bookDetails+search()+supplyBooks()+paymentDetails()Patron Record-patronld-type-dateOfMembership-noBooksIssued-maxBookLimit-name-address-phoneNo-finesOwed+retrieveMember()+increase Bookslssued()+decreaseBooklssued()+payFine() Fields with proper data typesat least 4 fields for the superclassat least 2 fields for other classes or subclasses)User-defined Methods with proper returntypes and scopeat least 2 user-defined methods for each classImplementation of a User Defined PackageDemonstration of OOP feature 1(Encapsulation)Demonstration of OOP feature 2 (Inheritance)Demonstration of OOP feature 3(Polymorphism)Proper naming conventionProper comments in each program and withinthe program

Introduction Java is a kind of programming language that is an oriented object-based language that…

Answered: Java | bartleby

Engineering

Computer Science

Java

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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Which (if any) of the following conditions are necessary for using polymorphism? Select all correct answers. The classes involved are in the same hierarchy. None of the classes can be abstract. All of the subclasses involved override the same method. The object reference cannot be of an interface type. An object reference of the superclass is used to call any methods. A superclass object is referenced by a subclass reference. Which of the following (if any) are true of abstract methods? Select all correct answers. Abstract methods must have a method body. Abstract methods cannot be declared in a class that isn't abstract itself. Abstract methods cannot be private or static. Abstract methods can only be declared in an interface. Abstract methods cannot be called. Constructor methods can be abstract.
Which (if any) of the following conditions are necessary for using polymorphism? Select all correct answers. The classes involved are in the same hierarchy. None of the classes can be abstract. All of the subclasses involved override the same method. The object reference cannot be of an interface type. An object reference of the superclass is used to call any methods. A superclass object is referenced by a subclass reference. Which of the following (if any) are true of abstract methods? Select all correct answers. Abstract methods must have a method body. Abstract methods cannot be declared in a class that isn't abstract itself. Abstract methods cannot be private or static. Abstract methods can only be declared in an interface. Abstract methods cannot be called.
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a c++ program in which class A is base class for class B. While Class C is derived from class B and class D is derived from class E. Provide explicit implementation of default constructors and destructors. Write a test program which initializes each class object and shows execution order of constructor and destructor by printing appropriate messages. Modify the above classes and provide overloaded constructor implementation for each class. (Note: Use base initialize for this purpose) Note: Solve as soon as possible use oop concepts
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Question 3:1. Explain the importance of method signature in method overriding.2. The system might want to use an overridden method (function) with a common signature across therelevant classes Seller, Dealer, Buyer, and distinct classes Car and Invoice for maintaining thefinances. Details of the classes can be seen in Table 1. Explain with proper syntax as to how this canbe achieved using object-oriented programming.3. Write Java code (for the methods only) that implements the method with the same signature for eachclass with the following details:a. Calculates the commission earned by the dealer. A dealer charges 1% commission eachto the buyer and seller on sale price of the car.b. The profit or loss for the seller. A seller earns profit (incurs loss) computed as thedifference between the sale and purchase price of the car. Sales Tax is deducted at therate of 17% on the profit earned. No sales tax is charged in case of loss. The methodshould display an appropriate message…
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Programming problem: Currency Simulator A. Create an abstract base class called Currency with two integer attributes, both of which are non-public (Python programmers - it is understood that there is nothing private in Python but try to not access the attributes directly from outside the classes). The int attributes will represent whole part (or currency note value) and fractional part (or currency coin value) such that 100 fractional parts equals 1 whole part. B. Create two derived classes - Dollar and Pound - with one additional non-public string attribute which will contain the name of the currency (Dollar or Pound) respectively. DO NOT add this attribute to the base Currency class. C. In your base Currency class, add public methods for the following, where appropriate (C++ students are allowed to use friend methods as long as a corresponding class method is defined as well): Default Construction (i.e. no parameters passed). Construction based on one single input of type double -…
Class A is the top-level category, while classes B and C are its children. So, although B and C have certain common characteristics and methods, B and C's implementations of a number of those methods are quite different. Use reasoning to determine if A will be a concrete class, abstract class, or interface.
The decorator pattern is used when subclassing is not possible or practical to add functionality Select one: True False