Create Lab6
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kxtzzl
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import java.util.ArrayList;
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import java.util.List;
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import java.util.Scanner;
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import java.util.Comparator;
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class ToyRoom {
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public static void variant() {
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int C13 = 2430 % 13;
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System.out.println("\n ---------------------------------------------------------------------------------------------------------------------");
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System.out.println(" C13 = " + C13 + ", So, the task is: Prepare the toy room for children of different age groups.");
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System.out.println(" ---------------------------------------------------------------------------------------------------------------------");
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}
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private List<Toy> toys;
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public ToyRoom() {
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this.toys = new ArrayList<>();
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}
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public void addToy(Toy toy) {
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toys.add(toy);
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}
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public void displayToys() {
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System.out.println(" -------------------------------------------------------");
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System.out.printf(" | %-20s | %-10s | %-15s |\n", "Name", "Price ($)", "Age Group");
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System.out.println(" |----------------------|------------|-----------------|");
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for (Toy toy : toys) {
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System.out.printf(" | %-20s | %-10.2f | %-15s |\n", toy.name, toy.price, toy.ageGroup);
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}
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System.out.println(" -------------------------------------------------------");
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}
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public void sortToys(boolean ascending) {
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if (ascending) {
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toys.sort(Comparator.comparingDouble(Toy::getPrice));
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} else {
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toys.sort(Comparator.comparingDouble(Toy::getPrice).reversed());
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}
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}
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public List<Toy> findToysByPriceRange(double minPrice, double maxPrice) {
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List<Toy> foundToys = new ArrayList<>();
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for (Toy toy : toys) {
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if (toy.getPrice() >= minPrice && toy.getPrice() <= maxPrice) {
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foundToys.add(toy);
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}
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}
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return foundToys;
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}
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public void findToysByName(String name) {
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List<Toy> foundToys = new ArrayList<>();
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for (Toy toy : toys) {
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if (toy.name.toLowerCase().contains(name.toLowerCase())) {
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foundToys.add(toy);
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}
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}
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if (!foundToys.isEmpty()) {
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System.out.println("\n Toys with matching name \"" + name + "\":");
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System.out.println(" -------------------------------------------------------");
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System.out.printf(" | %-20s | %-10s | %-15s |\n", "Name", "Price ($)", "Age Group");
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System.out.println(" |----------------------|------------|-----------------|");
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for (Toy toy : foundToys) {
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System.out.printf(" | %-20s | %-10.2f | %-15s |\n", toy.name, toy.price, toy.ageGroup);
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}
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System.out.println(" -------------------------------------------------------");
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} else {
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System.out.println(" No toys found with a matching name.");
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}
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}
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}
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abstract class Toy {
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protected String name;
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protected double price;
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protected String ageGroup;
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public Toy(String name, double price, String ageGroup) {
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this.name = name;
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this.price = price;
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this.ageGroup = ageGroup;
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}
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public double getPrice() {
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return price;
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}
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@Override
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public String toString() {
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return name + " - $" + price + ageGroup;
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}
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}
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class Car extends Toy {
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public Car(String name, double price, String ageGroup) {
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super(name, price, ageGroup);
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}
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}
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class Doll extends Toy {
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public Doll(String name, double price, String ageGroup) {
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super(name, price, ageGroup);
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}
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}
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class Ball extends Toy {
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public Ball(String name, double price, String ageGroup) {
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super(name, price, ageGroup);
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}
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}
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class Cube extends Toy {
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public Cube(String name, double price, String ageGroup) {
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super(name, price, ageGroup);
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}
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}
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public class Lab6 {
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public static void main(String[] args) {
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ToyRoom toyRoom = new ToyRoom();
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ToyRoom.variant();
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toyRoom.addToy(new Car("Small car 'Mcqueen'", 10.0, "1-3 years"));
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toyRoom.addToy(new Car("Small Car 'Audi'", 12.0, "1-3 years"));
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toyRoom.addToy(new Car("Medium Yellow Car", 15.0, "3-6 years"));
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toyRoom.addToy(new Car("Medium Blue Car", 18.0, "3-6 years"));
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toyRoom.addToy(new Car("Car on R/C", 30.0, "6-10 years"));
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toyRoom.addToy(new Doll("Doll that can talk", 25.0, "1-3 years"));
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toyRoom.addToy(new Doll("Doll 'Barbie'", 10.0, "3-6 years"));
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toyRoom.addToy(new Doll("Bear Teddy", 14.5, "6-12 months"));
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toyRoom.addToy(new Ball("Yellow Ball", 5.0, "6-12 months"));
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toyRoom.addToy(new Ball("Big Blue Ball", 7.0, "1-3 years"));
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toyRoom.addToy(new Ball("Football Ball", 12.5, "6-10 years"));
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toyRoom.addToy(new Cube("Cubes with pictures", 6.5, "6-12 months"));
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toyRoom.addToy(new Cube("Cubes with letters", 9.0, "3-6 years"));
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toyRoom.addToy(new Cube("Rubik's Cube", 14.0, "6-10 years"));
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boolean exit = false;
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Scanner scanner = new Scanner(System.in);
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while (!exit) {
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System.out.println("\n Select an option:");
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System.out.println(" 1 - Display all toys;");
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System.out.println(" 2 - Find toy by price range;");
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System.out.println(" 3 - Sort toys by price;");
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System.out.println(" 4 - Find a toy by name;");
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System.out.println(" Q - Quit;\n");
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String option = scanner.nextLine();
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switch (option.toLowerCase()) {
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case "1":
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System.out.println(" Toys in the Toy Room:");
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toyRoom.displayToys();
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break;
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case "2":
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System.out.print(" Enter the minimum price for the toy: ");
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double minPrice = scanner.nextDouble();
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scanner.nextLine();
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System.out.print(" Enter the maximum price for the toy: ");
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double maxPrice;
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do {
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maxPrice = scanner.nextDouble();
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scanner.nextLine();
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if (minPrice >= maxPrice) {
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System.out.println(" Error: The minimum price must be less than the maximum price. Please try again.");
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System.out.print(" Enter the maximum price for the toy: ");
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}
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} while (minPrice >= maxPrice);
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List<Toy> foundToys = toyRoom.findToysByPriceRange(minPrice, maxPrice);
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if (!foundToys.isEmpty()) {
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System.out.println("\n Found toys within the price range:");
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System.out.println(" -------------------------------------------------------");
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System.out.printf(" | %-20s | %-10s | %-15s |\n", "Name", "Price ($)", "Age Group");
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System.out.println(" |----------------------|------------|-----------------|");
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for (Toy toy : foundToys) {
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System.out.printf(" | %-20s | %-10.2f | %-15s |\n", toy.name, toy.price, toy.ageGroup);
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}
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System.out.println(" -------------------------------------------------------");
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} else {
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System.out.println("\n No toys found within the price range.");
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}
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break;
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case "3":
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System.out.println(" Choose the sorting order:");
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System.out.println(" A - Ascending");
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System.out.println(" D - Descending");
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String sortOrder = scanner.nextLine();
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boolean ascending = true;
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if (sortOrder.equalsIgnoreCase("D")) {
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ascending = false;
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}
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toyRoom.sortToys(ascending);
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System.out.println("\n Toys in the Toy Room after sorting:");
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toyRoom.displayToys();
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break;
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case "4":
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System.out.print(" Enter the toy name: ");
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String toyName = scanner.nextLine();
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toyRoom.findToysByName(toyName);
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break;
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case "q":
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exit = true;
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System.out.println(" Program exited. Thank you!");
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break;
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default:
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System.out.println(" Invalid option. Please try again.");
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}
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}
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}
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}
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