/media/sda-magnetic/david/Dokumente-15/fernuni-hagen/cs-i-ii/old-cs-2-03/java-new/2021-04-05/GameOfLife.java

public class GameOfLife {
  boolean[][] feld = {
      { false, false, false, false, false },
      { false, false, true, false, false },
      { false, true, true, true, false },
      { false, false, true, true, false },
      { false, false, false, false, false } };

  void print() {
    for (int i = 0; i < feld.length; i++) {
      for (int j = 0; j < feld[i].length; j++) {
        if (feld[i][j]) {
          System.out.print("o ");
        } else {
          System.out.print(". ");
        }
      }
      System.out.println();
    }
  }

  void nextGeneration() {
        int i;
        int j;
        int count = 0;
        boolean feld2 [][] = {
      { false, false, false, false, false },
      { false, false, false, false, false },
      { false, false, false, false, false },
      { false, false, false, false, false },
      { false, false, false, false, false } };
        
        for (i = 1;  i < (feld.length -1);  i++) {
            for (j = 1;  j < (feld[i].length -1);  j++) {
                count = 0;
                if (feld[i-1][j-1] == true)
                    count++;
                if (feld[i-1][j] == true)
                    count++;
                if (feld[i-1][j+1] == true)
                    count++;
                if (feld[i][j-1] == true)
                    count++;
                if (feld[i][j+1] == true)
                    count++;
                if (feld[i+1][j-1] == true)
                    count++;
                if (feld[i+1][j] == true)
                    count++;
                if (feld[i+1][j+1] == true)
                    count++;
                if (feld [i][j]) {
                    if ((count == 2) || (count == 3))
                        feld2 [i][j] = true;
                    else
                        feld2 [i][j] = false;
                }
                else {
                    if (count == 3)
                        feld2 [i][j] = true;
                    else
                        feld2 [i][j] = false;
                }
            }
        }
        
        for (i = 0;  i < feld.length;  i++)
            for (j = 0;  j < feld [i].length;  j++)
                feld [i][j] = feld2[i][j];
  }

  public static void main(String[] args) {
    GameOfLife myGame = new GameOfLife();
    for (int i = 0; i < 10; i++) {
      myGame.nextGeneration();
      myGame.print();
      System.out.println();
    }
  }
  
  
}