5.13 Program: Soccer team roster (Java)

5.13.java

import java.util.Scanner;

public class PlayerRoster {
   public static void main(String[] args) {
      Scanner scan = new Scanner(System.in);
      int[][] players = new int[5][2];
      boolean keepAlive = true;
      char input;
      
      for (int i = 0; i < 5; i++) {
         System.out.println("Enter player " + (i+1) + "'s jersey number: ");
         players[i][0] = scan.nextInt();
         System.out.println("Enter player " + (i+1) + "'s rating: ");
         players[i][1] = scan.nextInt();
         System.out.println();
      }
      System.out.println();
      outputRoster(players, 0);
      
      while (keepAlive) {
         outputMenu();
         input = scan.next().charAt(0);
         if (input == 'q') {
            keepAlive = false;
            break;
         } else if (input == 'o') {
            outputRoster(players, 0);
         } else if (input == 'u') {
            System.out.println("Enter a jersey number: ");
            int jerseyNum = scan.nextInt();
            System.out.println("Enter a new rating for the player: ");
            int newRating = scan.nextInt();
            for (int l = 0; l < 5; l++) {
               if (players[l][0] == jerseyNum) {
                  players[l][1] = newRating;
               }
            }
         } else if (input == 'a') {
            System.out.println("Enter a rating: ");
            int rating = scan.nextInt();
            outputRoster(players, rating);
         } else if (input == 'r') {
            System.out.println("Enter a jersey number: ");
            int jerseyNum = scan.nextInt();
            boolean exists = true;
            for (int l = 0; l < 5; l++) {
               if (players[l][0] == jerseyNum) {
                  System.out.println("Enter a new jersey number: ");
                  players[l][0] = scan.nextInt();
                  System.out.println("Enter a rating for the new player: ");
                  players[l][1] = scan.nextInt();
               }
            }
            
         }
      }
      
      return;
   }
   
   public static void outputRoster(int[][] players, int min) {
      System.out.println(((min>0) ? ("ABOVE " + min) : ("ROSTER")));
      int item = 1;
      for (int[] player : players) {
         if (player[1] > min) {
            System.out.println("Player " + item + " -- Jersey number: " + player[0] + ", Rating: " + player[1]);
         }
         item++;
      }
      System.out.println();
   }
   
   public static void outputMenu() {
      System.out.println("MENU");
      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\n");
      System.out.println("Choose an option: ");  
   }
}

This worked for me using zyBooks (JAVA), Thank you

Thank you!!!

Thank you!!!

Hi chae709! if need help you can ask me direct or on fiverr "wasimkhan663".

thank you

this is the version that worked for me:

import java.util.Scanner;

public class PlayerRoster {
public static void main(String[] args) {
Scanner scan = new Scanner(System.in);
int[][] players = new int[5][2];
boolean keepAlive = true;
char input;

  for (int i = 0; i < 5; i++) {
     System.out.println("Enter player " + (i+1) + "'s jersey number:");
     players[i][0] = scan.nextInt();
     System.out.println("Enter player " + (i+1) + "'s rating:");
     players[i][1] = scan.nextInt();
     System.out.println();
  }
  outputRoster(players, 0);
  
  while (keepAlive) {
     outputMenu();
     input = scan.next().charAt(0);
     if (input == 'q') {
        keepAlive = false;
        break;
     } else if (input == 'o') {
        outputRoster(players, 0);
     } else if (input == 'u') {
        System.out.println("Enter a jersey number: ");
        int jerseyNum = scan.nextInt();
        System.out.println("Enter a new rating for the player: ");
        int newRating = scan.nextInt();
        for (int l = 0; l < 5; l++) {
           if (players[l][0] == jerseyNum) {
              players[l][1] = newRating;
           }
        }
     } else if (input == 'a') {
        System.out.println("Enter a rating: ");
        int rating = scan.nextInt();
        outputRoster(players, rating);
     } else if (input == 'r') {
        System.out.println("Enter a jersey number: ");
        int jerseyNum = scan.nextInt();
        boolean exists = true;
        for (int l = 0; l < 5; l++) {
           if (players[l][0] == jerseyNum) {
              System.out.println("Enter a new jersey number: ");
              players[l][0] = scan.nextInt();
              System.out.println("Enter a rating for the new player: ");
              players[l][1] = scan.nextInt();
           }
        }
        
     }
  }
  
  return;

}

public static void outputRoster(int[][] players, int min) {
System.out.println(((min>0) ? ("ABOVE " + min) : ("ROSTER")));
int item = 1;
for (int[] player : players) {
if (player[1] > min) {
System.out.println("Player " + item + " -- Jersey number: " + player[0] + ", Rating: " + player[1]);
}
item++;
}
System.out.println();
}

public static void outputMenu() {
System.out.println("MENU");
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\n");
System.out.println("Choose an option:");
}
}

For me OP's code was near perfect, I just had to remove the System.out.println(); on line 17.