public class Player {
private String playerName;
private int number;

public Player(String name){
  this.playerName = name;
}

public int guessNumber() {
    return Integer.parseInt(JOptionPane.showInputDialog(playerName +"'s Turn\nGuess   
     the Number"));
    JOptionPane.showMessageDialog(null, playerName+ "'s GUESS is " + number);
}

public String getPlayerName() {
    return playerName;
}
 
}

public class GuessGame {

private int numberToGuess;
private Player p1;
private Player p2;
private Player p3;
 

//Would probably made amount of players dynamic as well.
public GuessGame(String player1, String player2, String player3){
    numberToGuess = (int) (Math.random()*10);
    p1 = new Player(player1);
    p2 = new Player(player2);
    p3 = new Player(player3);
}
 

//Would probably split this up in submethods too.
//The flagging is quite ugly too but I don't got time to edit it.
public void startGame(){
    int flagWinner = 0;
    while(0==flagWinner){
        if (p1.guessNumber()==numberToGuess){
            flagWinner = 1;
            break;
        }
        JOptionPane.showMessageDialog(null, p1.getPlayerName() + "'s Guess is Wrong!");
        if (p2.guessNumber()==numberToGuess){
            flagWinner = 2;
            break;
        }
        JOptionPane.showMessageDialog(null,p2.getPlayerName() + "'s Guess is Wrong!");
        if (p3.guessNumber()==numberToGuess){
            flagWinner = 3;
            break;
        }
        JOptionPane.showMessageDialog(null,p3.getPlayerName() + "'s Guess is Wrong!");
    }
    if (1 == flagWinner){
        JOptionPane.showMessageDialog(null,p1.getPlayerName()+ " Wins!");
    } else if (2 == flagWinner){
        JOptionPane.showMessageDialog(null,p2.getPlayerName()+ " Wins!");
    } else JOptionPane.showMessageDialog(null,p3.getPlayerName()+ " Wins!");
}

public static void main(String[] e){
GuessGame gg = new GuessGame(JOptionPane.showInputDialog("Enter Player 1 Name: "),JOptionPane.showInputDialog("Enter Player 2 Name: "),JOptionPane.showInputDialog("Enter Player 3 Name: ");

gg.startGame();
}
 
}

public class Player {
    private String playerName;
    private int number;

    public Player(String name){
      this.playerName = name;
    }

    public int guessNumber() {
        return Integer.parseInt(JOptionPane.showInputDialog(playerName 
            +"'s Turn\nGuess the Number"));
        JOptionPane.showMessageDialog(null, playerName+ "'s GUESS is " + number);
    }

    public String getPlayerName() {
        return playerName;
    }
}

public class GuessGame {

    private int numberToGuess;
    private Player p1;
    private Player p2;
    private Player p3;

    //Would probably made amount of players dynamic as well.
    public GuessGame(String player1, String player2, String player3){
        numberToGuess = (int) (Math.random()*10);
        p1 = new Player(player1);
        p2 = new Player(player2);
        p3 = new Player(player3);
    }

    //Would probably split this up in submethods too.
    //The flagging is quite ugly too but I don't got time to edit it.
    public void startGame(){
        int flagWinner = 0;
        while(0==flagWinner){
            if (p1.guessNumber()==numberToGuess){
                flagWinner = 1;
                break;
            }
            JOptionPane.showMessageDialog(null, p1.getPlayerName()
                + "'s Guess is Wrong!");
            if (p2.guessNumber()==numberToGuess){
                flagWinner = 2;
                break;
            }
            JOptionPane.showMessageDialog(null,p2.getPlayerName()
                + "'s Guess is Wrong!");
            if (p3.guessNumber()==numberToGuess){
                flagWinner = 3;
                break;
            }
            JOptionPane.showMessageDialog(null,p3.getPlayerName()
                + "'s Guess is Wrong!");
        }
        if (1 == flagWinner){
            JOptionPane.showMessageDialog(null,p1.getPlayerName()+ " Wins!");
        } else if (2 == flagWinner){
            JOptionPane.showMessageDialog(null,p2.getPlayerName()+ " Wins!");
        } else JOptionPane.showMessageDialog(null,p3.getPlayerName()+ " Wins!");
    }

    public static void main(String[] e){
        GuessGame gg = new GuessGame(
            JOptionPane.showInputDialog("Enter Player 1 Name: "),
            JOptionPane.showInputDialog("Enter Player 2 Name: "),
            JOptionPane.showInputDialog("Enter Player 3 Name: ")
        );
        gg.startGame();
    }
}