vierInEinerReihe

 public void playGame(){
        while(winningPlayer == 0){
        placePiece();
            decideWinner();
        }
}

private void decideWinner(){
        boolean didIWin = true;
        for(int i = 0; i < 6; i++) {
            for (int j = 0; j < 7; j++) {
                String player = board[i][j]; //ist ok wenn alles auf 0 ist und ich so anfange??
                if (player == board[i + 1][j] &&
                        board[i + 1][j] == board[i + 2][j] &&
                        board[i + 2][j] == board[i + 1][j] &&
                        board[i + 1][j] == player) {
                    System.out.println("res: " + didIWin);
                    System.out.println("horizontale");
                    break;
                }
            }
            break;
        }

        for(int i = 0; i < 3; i++) {
            for (int j = 0; j < 4; j++) {
                String player = board[i][j];
                //upleft-rightdown-diagonal
                if (player == board[i + 3][j + 3] &&
                        board[i + 3][j + 3] == board[i + 2][j + 2] &&
                        board[i + 2][j + 2] == board[i + 1][j + 1] &&
                        board[i + 1][j + 1] == player) {
                    System.out.println("res: " + didIWin);
                    System.out.println("lookdown");
                    break;
                }
            }
            break;
        }

        for(int i = 3; i < 6; i++) {
            for (int j = 6; j <= 0; j--) {
                String player = board[i][j];
                //upleft-rightdown-diagonal
                if (player == board[i + 3][j - 3] &&
                        board[i + 3][j - 3] == board[i + 2][j - 2] &&
                        board[i + 2][j - 2] == board[i + 1][j - 1] &&
                        board[i + 1][j - 1] == player) {
                    System.out.println("res: " + didIWin);
                    System.out.println("lookup");
                    break;
                }

            }
            break;
        }        //horizontal

        for(int i = 0; i <= 6; i++){
            for(int j = 0; i < 4; j++){
                String player = board[i][j];

                //vertikal
                 if(player == board[i][j+1]&&
                        board[i][j+1] == board[i][j+2] &&
                        board[i][j+2] == board[i][j+3] &&
                        board[i][j+3] == player){
                    System.out.println("res: " + didIWin);
                    System.out.println("vertikale");
                    break;
                }

                break;
            }
            break;
        }


    }

 private void placePiece(){ // i will develop another TicTacToe with this logic

      switch(playerTurn){
          case 1:
            System.out.println("Player " + playerTurn + " please select which col to place your piece (1-7)");
            String input = new java.util.Scanner(System.in).nextLine();
            int colChoice = Integer.parseInt(input) - 1;
              String pieceToPlace = "X";
              board[getNextAvailableSlot(colChoice)][colChoice] = pieceToPlace;
              displayBoard();
              swapPlayerTurn();
              break;
          case 2:
              System.out.println("Player " + playerTurn + " places the piece");
              Random rdm = new Random();
              colChoice = rdm.nextInt(6)+1;
              pieceToPlace = "O";
              board[getNextAvailableSlot(colChoice)][colChoice] = pieceToPlace;
              displayBoard();
              swapPlayerTurn();
              break;
          default:
              System.out.println("no valid turn");
              break;

      }


    }