попытка написать крестики нолики

import java.util.Random;
import java.util.Scanner;

  public class GAME {
    public static void main(String[] args) {
        /*  */
        Random rand = new Random();
        Scanner in = new Scanner(System.in);

        System.out.print("Введите имя игрока: ");
        String Name = in.nextLine();
        System.out.println(Name + ", Желаете увидеть правила?\n 1. да\n 2. нет");
        int rules = in.nextInt();
        if (rules == 1){
            System.out.println("ПРАВИЛА");
        }else {
            System.out.println("Желаем вам удачи, " + Name);
        }

        int sizemassiv = 3;
        System.out.println("Желаете ли начать первым?)\n 1. да\n 2. нет");
        int priority = in.nextInt();
        if (priority == 2) {
                //ходит система
                System.out.println("Игру начинает: СИСТЕМА, ее знак - X.");


                String[][] clearbord = clearboard(sizemassiv);
                System.out.println("Вот ваше поле: ");

                for (int i = 0; i < sizemassiv; i++) {
                    int ch = 0;
                    System.out.print(" ");
                    for (int j = 0; j < sizemassiv; j++) {
                        if (j < sizemassiv - 1) {
                            System.out.print(clearbord[i][j] + "  ");
                        } else {
                            System.out.print(clearbord[i][j]);
                        }

                    }
                    System.out.println(" ");
                }
                System.out.println("СИСТЕМА делает ход...");
                System.out.println("СИСТЕМА сделала ход!!");
                System.out.println("Вот ваше поле: ");
                String[][] hod1 = hodmachine1(clearbord);
                for (int i = 0; i < sizemassiv; i++) {
                    int ch = 0;
                    System.out.print(" ");
                    for (int j = 0; j < sizemassiv; j++) {
                        if (j < sizemassiv - 1) {
                            System.out.print(hod1[i][j] + "  ");
                        } else {
                            System.out.print(hod1[i][j]);
                        }

                    }
                    System.out.println(" ");
                }

                boolean win = false;
                if((hod1[0][0] == hod1[0][1] == hod1[0][2]) ||
                        (hod1[1][0] == hod1[1][1] == hod1[1][2]) ||
                        (hod1[2][0] == hod1[2][1] == hod1[2][2]) ||
                        (hod1[0][0] == hod1[1][0] == hod1[2][0]) ||
                        (hod1[0][1] == hod1[1][1] == hod1[2][1]) ||
                        (hod1[0][2] == hod1[1][2] == hod1[2][2]) ||
                        (hod1[0][0] == hod1[1][1] == hod1[2][2]) ||
                        (hod1[0][2] == hod1[1][1] == hod1[2][0])) {
                win = true;
            }
                // ходит система

        } else {
                //ходит игрок
                System.out.println("Игру начинает: " + Name + ", ваш знак - O.");
                String[][] clearbord = clearboard(sizemassiv);
                System.out.println("Вот ваше поле: ");

                for (int i = 0; i < sizemassiv; i++) {
                    int ch = 0;
                    System.out.print(" ");
                    for (int j = 0; j < sizemassiv; j++) {
                        if (j < sizemassiv - 1) {
                            System.out.print(clearbord[i][j] + "  ");
                        } else {
                            System.out.print(clearbord[i][j]);
                        }

                    }
                    System.out.println(" ");
                }


                String[][] hod1 = humanhod1(clearbord);
                System.out.println("Вот ваше поле: ");

                for (int i = 0; i < sizemassiv; i++) {
                    int ch = 0;
                    System.out.print(" ");
                    for (int j = 0; j < sizemassiv; j++) {
                        if (j < sizemassiv - 1) {
                            System.out.print(hod1[i][j] + "  ");
                        } else {
                            System.out.print(hod1[i][j]);
                        }

                    }
                    System.out.println(" ");
                }

                boolean win = false;
            if((hod1[0][0] == hod1[0][1] == hod1[0][2]) ||
                    (hod1[1][0] == hod1[1][1] == hod1[1][2]) ||
                    (hod1[2][0] == hod1[2][1] == hod1[2][2]) ||
                    (hod1[0][0] == hod1[1][0] == hod1[2][0]) ||
                    (hod1[0][1] == hod1[1][1] == hod1[2][1]) ||
                    (hod1[0][2] == hod1[1][2] == hod1[2][2]) ||
                    (hod1[0][0] == hod1[1][1] == hod1[2][2]) ||
                    (hod1[0][2] == hod1[1][1] == hod1[2][0])) {
                win = true;
            }
                //ходит игрок
            //////////////////////////////////////////////////////////////////////////////////////////////////////////
            //////////////////////////////////////////////////////////////////////////////////////////////////////////

        }
    }




    public static String[][] clearboard (int x){
            Scanner in = new Scanner(System.in);
            String[][] a = new String[x][x];
            for (int i = 0; i < x; i++) {
                for (int j = 0; j < x; j++) {
                    a[i][j] = "-";
                }
            }
            return a;
      }
      /*
      public static boolean isCellValid(int x, int y){
          boolean result = true;

          if (x < 0 || x >= 3 || y < 0 || y >= 3){
              result = false;
          } else if (a[y][x] != "-") {
              result = false;
          }

          return result;
      }*/

      public static String[][] hodmachine1(String[][] clearbord) {
          Random rand = new Random();
          boolean checkempty = true;

          String[][] a = clearbord;
          do {
              int n = rand.nextInt(2);
              int k = rand.nextInt(2);
              if (a[n][k] == "-") {
                  checkempty = true;
                  System.out.println("СИСТЕМА выбрала ячейку: " + (n+1) + " " + (k+ 1));
                  a[n][k] = "X";
              } else if (a[n][k] != "-") {
                  checkempty = false;
              }
          } while (checkempty = false);
          return a;
      }
      public static String[][] humanhod1(String[][] clearbord){
          Scanner in = new Scanner(System.in);


          boolean checkempty = true;
          String[][] a = clearbord;
          do {
              System.out.print("Выберите ячейку для хода: ");

              int n = in.nextInt() - 1;
              int k = in.nextInt() - 1;
              if (a[n][k] == "-") {
                  checkempty = true;
                  a[n][k] = "O";
              } else if (a[n][k] != "-") {
                  checkempty = false;
              }
          } while (checkempty = false);
          return a;
      }

  }