What is the reason for the errors?

Question

Java

I have the following code:

public class GuessGame {
  Player p1;
  Player p2;
  Player p3;

  public void startGame() {
    p1 = new Player();
    p2 = new Player();
    p3 = new Player();

    int guessp1 = 0;
    int guessp2 = 0;
    int guessp3 = 0;

    boolean p1isRight = false;
    boolean p2isRight = false;
    boolean p3isRight = false;

    int targetNumber = (int) (Math.random() * 10);
    System.out.println("random number from 0 to 9");

    while(true) {
      System.out.println("number, that you need to guess - " + targetNumber);

      p1.guess();
      p2.guess();
      p3.guess();

      guessp1 = p1.number;
      System.out.println("P1 think, that is " + guessp1);

      guessp2 = p2.number;
      System.out.println("P2 think, that is " + guessp2);

      guessp3 = p3.number;
      System.out.println("P3 think, that is " + guessp3);

      if (guessp1 == targetNumber) {
        p1isRight = true;
      }

      if (guessp2 == targetNumber) {
        p2isRight = true;
      }

      if (guessp3 == targetNumber) {
        p3isRight = true;
      }

      if (p1isRight || p2isRight || p3isRight) {
        System.out.println("We have a winner!");
        System.out.println("Did the first player guess?" + p1isRight);
        System.out.println("Did the second player guess?" + p2isRight);
        System.out.println("Did the third player guess?" + p3isRight);
        System.out.println("Game over.");
        break;
      } else {
        System.out.println("Players should to try again.");
      }
    }
  }
}

Please explain why the compiler throws errors:

GuessGame.java:2: error: cannot find symbol
        Player p1;
        ^
  symbol:   class Player
  location: class GuessGame
GuessGame.java:3: error: cannot find symbol
        Player p2;
        ^
  symbol:   class Player
  location: class GuessGame
GuessGame.java:4: error: cannot find symbol
        Player p3;
        ^
  symbol:   class Player
  location: class GuessGame
GuessGame.java:7: error: cannot find symbol
                p1 = new Player();
                         ^
  symbol:   class Player
  location: class GuessGame
GuessGame.java:8: error: cannot find symbol
                p2 = new Player();
                         ^
  symbol:   class Player
  location: class GuessGame
GuessGame.java:9: error: cannot find symbol
                p3 = new Player();
                         ^
  symbol:   class Player
  location: class GuessGame
6 errors

Answer 1

does not find the Player class
, perhaps there is no such file. not in this package. and so on.

Answer 2

So what was the problem?