i need help in compliting this code it's a tictactoe game using java :

 

import java.util.Scanner;

import java.io.FileReader;

import java.io.BufferedReader;

 

public class TicTacToeGame{

 /** symbol for X */

 public static final Character ex = 'X';

  

 /** symbol for O */

 public static final Character oh = 'O';

 

 /** symbol for empty grid element */

 public static final Character empty = ' ';

  

 /** board is the grid that the game is played on; 

  * each element must be one of ex, oh or empty*/

 public static Character[][] board;

  

  

 /** rows is the number of rows (N) in the game board */

 public static int rows;

   

 /** columns is the number of columns (M) in the game board */

 public static int columns;

  

 /** win_condition is the value of K, the winning condition of the game */

 public static int win_condition; 

  

 /** specifies if the game is 1p (human-human) or 2p (human-computer) */

 public static boolean human_human_game;

  

  

 /** Checks for a win based on the last symbol played in the game

  * 

  * It is assumed that the position specified by the last_row_played

  * and last_column_played is valid and that the symbol in the board

  * at that position is not empty. (It must be <em>ex</em> or <em>oh</em>)

  * 

  * @param last_row_played is the row of the last symbol played

  * @param last_column_played is the column of the last symbol played

  * @return the length of the winning row/column/diagonal of symbols 

  * if the last move is a winning move, or -1 if the last move is not 

  * a winning move.

  */

 public static int win(int last_row_played, int last_column_played){

  // add your code and change the return value

  return -2;

 }

  

 /** main method to run the game 

  * 

  * @param args optional command line arguments to 

  * specify if the game is 1p (human-computer) or

  * 2p (human-human). Expect the string "2p" if any

  * command line argument is given.

  */

 public static void main(String[] args){

   

  /*------------------------------------------

   * handle command line arguments if any   

   * to determine if the game is human-human 

   * or human-computer            

   *------------------------------------------*/

  if( args.length > 0){

   /* there are commend line arguments present */

    

   // add your code here

    

  }else{

   /* there are no command line argument present */

    

   // add your code here

    

  }

   

  /*------------------------------------

   * read N-M-K data from init file  

   * N = rows             

   * M = columns           

   * K = win_condition        

   *------------------------------------*/

   

  /*-------------------------------------

   *-------------------------------------

   * BEGIN : Do NOT change the code here

   *-------------------------------------*/

  BufferedReader file_input;

  FileReader  file;

  String    file_name = "init"; 

  String    line;

   

  try{

   file = new FileReader(file_name);

   file_input = new BufferedReader(file);

    

   line = file_input.readLine();

   rows = Integer.parseInt(line);

    

   line = file_input.readLine();

   columns = Integer.parseInt(line);

    

   line = file_input.readLine();

   win_condition = Integer.parseInt(line);

    

   /* always close your files you are done with them! */

   file_input.close();

    

  }catch(Exception e){

   /* somethine went wrong! */

   System.err.println("Failure to read data from init file properly");

   System.err.println(e);

   System.err.println("Program ending");

   return;

  }

 

   

  /*-------------------------------------

   * END : Do NOT change the code here

   *------------------------------------- 

   *-------------------------------------*/

 

   

  /* create and initialize the game board */

   

  /* allocate memory for the board array */

  board = new Character[rows][columns];

   

  // add code to initialize all elements to empty

   

   

  /* code to drive the game */

   

  // add your code here

   

   

 }

  

}