I\'m having trouble with my return statement in the \'next()\' method. I\'m tryi

Question

I'm having trouble with my return statement in the 'next()' method. I'm trying to return the 2d array 'gameBoard'. Can you see what the issue is? I highlighted the 'next' method in blue.

//-----------------------------------------code---------------------------------------

import java.io.*;
import java.util.Scanner;
/////////////////////////////////////////////////////////////
class Hw09
{
   public static void main(String [] args) throws Exception
   {
      Board b = new Board(50,50);
      b.next();
      b.print();
   }

}// end class Hw09
/////////////////////////////////////////////////////////////
class Board
{
   private char[][] gameBoard;
   private int rmax;
   private int cmax;
//-------------------------------------------------------------------------------------
   public Board (int rmax, int cmax)
   {
      char[][] gameBoard = new char[rmax][cmax];
      for (int row = 0; row < rmax; row++)
      {
         for(int col = 0; col < cmax; col++)
         gameBoard[row][col] = 0;
      }
      for (int row = 20; row < 31; row++)
      {
      for(int col = 20; col < 31; col++)
      gameBoard[row][col] = 1;
      }
      this.rmax = rmax;
      this.cmax = cmax;
   }
//------------------------------------------------------------------------------------
   public void print()
   {
      for (int row = 0; row < rmax; row++)
      {
         for(int col = 0; col < cmax; col++)
            System.out.println(gameBoard[row][col]);  

      }
   }
//------------------------------------------------------------------------------------
   public void print(char char0, char char1)
   {
      for (int row = 0; row < rmax; row++)
      {
         for (int col = 0; col < cmax; col++)
         {
            if (gameBoard[row][col] == 0)
            {
               gameBoard[row][col] = char0;
               System.out.println(gameBoard[row][col]);
            }
            if (gameBoard[row][col] == 1)
            {
               gameBoard[row][col] = char1;
               System.out.println(gameBoard[row][col]);
            }
         }
      }
   }
//--------------------------------------------------------------------------------------
   public Board next()
   {
      for (int row = 0; row < rmax; row++)
      {
         for(int col = 0; col < cmax; col++)
         {
            int sum = (gameBoard[row-1][col-1]+gameBoard[row-1][col]+
                            gameBoard[row-1][col+1]+gameBoard[row][col-1]+
                            gameBoard[row] [col+1]+gameBoard[row+1][col-1]+
                            gameBoard[row+1][col]+gameBoard[row+1][col+1]);
            if (sum < 2 || sum > 3)
               reset(row,col);
            if (sum == 3)
               set(row,col);
         }
      }
            return gameBoard;
   }
//-------------------------------------------------------------------------------------
   public void set ( int r, int c) {gameBoard[r][c] = 1;}
//------------------------------------------------------------------------------------
   public void reset ( int r, int c) {gameBoard[r][c] = 0;}

Explanation / Answer

gameBoard is a 2d array so if you want to return it, you need to have the same returnValueType for your next() method which is char[][] in this case. Thus said, do this: public char[][] next() { // code goes here return gameBoard; }

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