Tic - Tac - Toe game in java

tic

//import java.io.IOException;
import java.util.Scanner;

class playutility
{       //by default interface variables are static and final
	 int winner = 0, count = 0;
	 static int yes=1;
	 static Scanner scan = new Scanner(System.in);
     String data[] = new String[9];
     int index, flag, i, k, j;
	 String sign;
     static int player;

}



class B extends playutility
{  
	  
		public void playingLogic()
		{    initialize();
			 while (count < 9)
			 {
	             display();
	             player();
	             System.out.println("move for player "+player);
                 getIndex();    //checkAvailibility + takes input
	             //storeIndex();
	             if(yes==0)
	            	 continue;
	             System.out.println("yep");
	             checkIndex(); // checkHorizontal + checkVertical + checkDiagonal and decides value if winner
	             if(winner==1)
	            	 break;
	             count++;
	             
	        }
		displayWinner();	
		
	    }

		private void initialize()
	    {
		 for (i=0 ;i < 9; i++)
	         data[i] = " ";
		
	     }
		
		 private void display()
		 {   //try {
			//Runtime.getRuntime().exec("cls");
		//} catch (Exception e){}
			 //System("CLS");
			 System.out.println("\n\n");
			 System.out.println("\t\t\t"+ data[0]+" | "+ data[1]+" | "+ data[2]+"\n");
			 System.out.println("\t\t\t---------\n");
			 System.out.println("\t\t\t"+ data[3]+" | "+ data[4]+" | "+ data[5]+"\n");
			 System.out.println("\t\t\t---------\n");
			 System.out.println("\t\t\t" +data[6]+" | "+ data[7]+" | "+ data[8]+"\n");
			 
		 }
	
		private void player() //selects player  //abstraction 
            	{  
	              
		            if (count % 2 == 0)
		             {
                      sign = "X";
                       player = 1; 
                      }
		            else {
                       sign = "Y";
                       player = 2;
                         }
		
	              
              	}
		  
           private void getIndex()
      //>>     {   if(checkAvailable()==1)
               {
        	   
      	       index = scan.nextInt();
      	      // scan.next();
        	   checkAvailable();
        	   if(yes==0)
        	   {   // scan.next();
        	    // scan.close();
        		   return;}
        	       
        	   data[index - 1] = sign;
        	   //scan.nextInt();
        	   //scan.close();
               //}
               
	
           }
           
           private void checkAvailable()
           {  
	
        	   if (index < 1 || index > 9) {
        		   System.out.println("Allowed index is 1 to 9!!\n");
        		  yes=0;
        		   }
        	   //continue;
	
        	   else if (data[index - 1].equals("X") || data[index - 1].equals("Y"))
                    {
        		   System.out.println("Position Already occupied!!\n");
        		   yes=0;
        	   }
        	   // continue;
        	   else yes = 1;
	
           }
           private void checkIndex() {
        		checkHorizontal();
        		checkVertical();
        		checkDiagonal();
        		
        	}
private void checkHorizontal(){
	
	  for (i = 0; i < 9; i++)
	  {if (i % 3 == 0)
           flag = 0;

          if (data[i].equals(sign))
                  flag++;

          if (flag == 3) {
                  winner = 1;
                  //goto win;
          }
  }
	
}
private void checkVertical(){
	 for (i = 0; i < 3; i++) {
         for (k = i; k <= i + 6; k = k + 3) {
        	 flag = 0;
                 if (data[k] == sign)
                         flag++;
         }
         if (flag == 3) {
                 winner = 1;
                 //goto win;
         }
	 }
	
	
}
private void checkDiagonal(){
	  if ((data[0].equals(sign) && data[4].equals(sign) && data[8].equals(sign)) ||
              (data[2].equals(sign) && data[4].equals(sign) && data[6].equals(sign))) {
              winner = 1;}
	
	
}

private void displayWinner()
{
	//System.out.println("\f");
	
	display();
	  if (winner==1) {
          System.out.println("Player "+player+" is the winner. Congrats!!\n");
          }
	  else
	  {System.out.println("Match draw.. Best of luck for both\n");
	  }
		
	}

}



public class ticTacToe{

	public static void main(String[] args){
	 B obj = new B(); 
	 obj.playingLogic();
	   
	}

}