Answer to Question #265635 in Computer Networks for nothando

Question

Write a Database class that creates and maintain a list of multimedia items. Your class must use the subclasses defined above to provide the following minimum functionality: a) add an item to the list b) remove an item to the list c) print out a list of items (to the screen) d) depreciates each item

Answer 1

import java.util.ArrayList;

public class Database {
 private ArrayList<Item>items;

 public Database(){
 items = new ArrayList<>();
 }

 public void addItem(Item item){
 items.add(item);
 }
 
 public void removeItem(String name){
 for (int i = 0; i < items.size(); i++) {
 if(items.get(i).getName().equals(name)){
 items.remove(i);
 break;
 }
 }
 }
 
 public void printList(){
 for (Item item:items) {
 System.out.println(item);
 }
 }
 
 public void depreciateItems(){
 for (Item item:items) {
 item.setCost(0);
 }
 }
}