Fill in the method inventoryCost() below for the partial class definition given. The method should total the cost of all remaining items. Presume a class Item that has a getPrice() method returning the item's cost as an int. public class VendingMachine { // much more code would be here public int inventoryCost() } //_items contains all the items still in the machine private List _items;

Fill in the method inventoryCost() below for the partial class definition given. The method should total the cost of all remaining items. Presume a class Item that has a getPrice() method returning the item's cost as an int. public class VendingMachine { // much more code would be here public int inventoryCost() } //_items contains all the items still in the machine private List _items;

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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Consider the following class hierarchy: class Animal { ... } class Mammal extends Animal { ... } class Cat extends Mammal { ... } Write a generic method printArray that takes an array of any type and prints each element of the array. If the element is an instance of Animal or its subclass, the method should call the toString method of the object to print its details. Otherwise, the method should simply print the element. Your method should have the following signature: public static <T> void printArray(T[] array)
c# programMake a class called Employees, with attributes Name, Gender, Experience, Salary and ID.Make a delegate called EligiblePromo. This delegate takes an employees object as a parameter and returns a boolean value indication whether or not the employee should be promoted.Make a PromoteEmployee() method that takes an arraylist of Employees and delegate of type EligiblePromo as parametersNB: PromoteEmployee() methos loops through each Employees object and passes it to the delegate(25)
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Data Structure & Algorithum java program Do the following: 1) Add a constructor to the class "LList" that creates a list from a given array of objects.2) Add a method "addAll" to the "LList" class that adds an array of items to the end of the list. The header of the method is as follows, where "T" is the generic type of the objects in the list. 3) Write a Test/Driver program that thoroughly tests all the methods in the class "LList".
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Crete a program that implements at least 4 combination of method overriding and overloading. Decide which class to use to properly illustrate your solution.