PlayerRoster.java:139: error: class, interface, or enum expected import java.util.Scanner; PlayerRoster.java:140: error: class, interface, or enum expected import java.util.ArrayList; 2 errors

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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public class Player {
    private int jerseyNumber;
    private int rating;

    public Player(int jerseyNumber, int rating) {
        this.jerseyNumber = jerseyNumber;
        this.rating = rating;
    }

    public int getJerseyNumber() {
        return jerseyNumber;
    }

    public void setJerseyNumber(int jerseyNumber) {
        this.jerseyNumber = jerseyNumber;
    }

    public int getRating() {
        return rating;
    }

    public void setRating(int rating) {
        this.rating = rating;
    }

    @Override
    public String toString() {
        return "Jersey number: " + jerseyNumber + ", Rating: " + rating;
    }
}
public class RosterManager {
    private ArrayList<Player> roster;

    public RosterManager() {
        roster = new ArrayList<>();
    }

    public void addPlayer(Player player) {
        roster.add(player);
    }

    public void updatePlayerRating(int jerseyNumber, int newRating) {
        for (Player player : roster) {
            if (player.getJerseyNumber() == jerseyNumber) {
                player.setRating(newRating);
                break;
            }
        }
    }

    public void outputPlayersAboveRating(int ratingThreshold) {
        System.out.println("ABOVE " + ratingThreshold);
        for (Player player : roster) {
            if (player.getRating() > ratingThreshold) {
                System.out.println(player);
            }
        }
    }

    public void replacePlayer(int jerseyNumber, Player newPlayer) {
        for (int i = 0; i < roster.size(); i++) {
            if (roster.get(i).getJerseyNumber() == jerseyNumber) {
                roster.set(i, newPlayer);
                break;
            }
        }
    }

    public void outputRoster() {
        System.out.println("ROSTER");
        for (int i = 0; i < roster.size(); i++) {
            System.out.println("Player " + (i + 1) + " -- " + roster.get(i));
        }
    }

    public static void main(String[] args) {
        Scanner scnr = new Scanner(System.in);
        RosterManager manager = new RosterManager();

        for (int i = 0; i < 5; i++) {
            System.out.println("Enter player " + (i + 1) + "'s jersey number:");
            int jerseyNumber = scnr.nextInt();

            System.out.println("Enter player " + (i + 1) + "'s rating:");
            int rating = scnr.nextInt();

            Player player = new Player(jerseyNumber, rating);
            manager.addPlayer(player);
        }

        char option;
        do {
            System.out.println("\nMENU");
            System.out.println("u - Update player rating");
            System.out.println("a - Output players above a rating");
            System.out.println("r - Replace player");
            System.out.println("o - Output roster");
            System.out.println("q - Quit");
            System.out.println("Choose an option:");

            option = scnr.next().charAt(0);
            scnr.nextLine(); // Consume the newline character

            switch (option) {
                case 'u':
                    System.out.println("Enter a jersey number:");
                    int jerseyToUpdate = scnr.nextInt();
                    System.out.println("Enter a new rating for the player:");
                    int updatedRating = scnr.nextInt();
                    manager.updatePlayerRating(jerseyToUpdate, updatedRating);
                    break;
                case 'a':
                    System.out.println("Enter a rating:");
                    int ratingThreshold = scnr.nextInt();
                    manager.outputPlayersAboveRating(ratingThreshold);
                    break;
                case 'r':
                    System.out.println("Enter a jersey number to replace:");
                    int jerseyToReplace = scnr.nextInt();
                    System.out.println("Enter a new jersey number:");
                    int newJersey = scnr.nextInt();
                    System.out.println("Enter a rating for the new player:");
                    int newRating = scnr.nextInt();
                    Player newPlayer = new Player(newJersey, newRating);
                    manager.replacePlayer(jerseyToReplace, newPlayer);
                    break;
                case 'o':
                    manager.outputRoster();
                    break;
                case 'q':
                    System.out.println("Goodbye!");
                    break;
                default:
                    System.out.println("Invalid option. Please choose a valid option.");
            }
        } while (option != 'q');
    }
}
import java.util.Scanner;
import java.util.ArrayList;
public class PlayerRoster {
   public static void main(String[] args) {
      Scanner scnr = new Scanner(System.in);

      RosterManager.main(args);
   }
}

PlayerRoster.java:139: error: class, interface, or enum expected
import java.util.Scanner;
PlayerRoster.java:140: error: class, interface, or enum expected
import java.util.ArrayList;
2 errors
Transcribed Image Text:PlayerRoster.java:139: error: class, interface, or enum expected import java.util.Scanner; PlayerRoster.java:140: error: class, interface, or enum expected import java.util.ArrayList; 2 errors
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