Game Of Life Java - Counting neighbors with 2D arrays and for loops -


i working on conway's game of life program in eclipse @test cases. of methods pass tests except neighborcount method. have seen posts of method working loops , reason not work on code.

i trying wrap around 2d array locating neighbor cells loops. having trouble updating new society after counting neighbors. if please take @ code , locate error in methods, appreciated. thank in advance. have attached of code in case have error in method affecting neighborcount().

    public class gameoflife {      private int therows;     private int thecols;     private char[][] society;       public gameoflife(int rows, int cols) {         // complete method.         society = new char[rows][cols];         (int r = 0; r < rows; r++) {             (int c = 0; c < cols; c++) {                 society[r][c] = ' ';             }         }         therows = rows;         thecols = cols;     }      public int numberofrows() {          return therows;     }       public int numberofcolumns() {          return thecols;     }      public void growcellat(int row, int col) {         // complete method         (int r = 0; r < society.length; r++) {             (int c = 0; c < society[r].length; c++) {                 society[r][c] = 'o';             }         }      }      public boolean cellat(int row, int col) {                 if (society[row][col] == 'o') {                     return true;                 } else {                      return false;                 }          }      @override     public string tostring() {         string res = "";         (int r = 0; r < society.length; r++) {             (int c = 0; c < society[r].length; c++)                  res = res + society[r][c];          }         return res;     }      public int neighborcount(int row, int col) {          int count = 0;         for(int = row - 1; <= row + 1; i++) {             if (i >= 0 && >= society.length)                 for(int j = col - 1; j <= col + 1; j++)                      if (j >= 0 && j >= society[i].length)                          if (i != row || j != col)                              if (society[i][j] == 'o')                                  count++;         }          return count;     }      public void update() {         // complete method         char[][] newsociety = new char[society.length][society[0].length];          (int r = 0; r < society.length; r++) {             (int c = 0; c < society[r].length; c++)                  newsociety[r][c] = society[r][c];         }     } }

looks have >= instead of < in 2 places :

public int neighborcount(int row, int col) {      int count = 0;     for(int = row - 1; <= row + 1; i++) {         if (i >= 0 && < society.length) // fixed here             for(int j = col - 1; j <= col + 1; j++)                  if (j >= 0 && j < society[i].length) // fixed here                     if (i != row || j != col)                          if (society[i][j] == 'o')                              count++;     }      return count; }

if going access society[i][j], want make sure 0 <= < society.length , 0 <= j < society[i].length.


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