According to the code check, my code didn't assign false to isGameStopped, but in line 17 it does!

package com.codegym.games.ticktacktoe; import com.codegym.engine.cell.*; public class TicTacToeGame extends Game { private boolean isGameStopped; private int[][] model = new int[3][3]; private int currentPlayer; public void initialize(){ setScreenSize(3, 3); startGame(); updateView(); } public void startGame(){ isGameStopped = false; currentPlayer = 1; for(int i = 0; i < model.length; i++){ for(int j = 0; j < model[i].length; j++){ model[i][j] = 0; updateCellView(i, j, 0); } } } public void updateCellView(int x, int y, int value){ String text = ""; Color cellColor = Color.WHITE; Color textColor = Color.WHITE; switch(value){ case 0: text = " "; textColor = Color.WHITE; break; case 1: text = "X"; textColor = Color.RED; break; case 2: text = "O"; textColor = Color.BLUE; break; default: break; } //setCellValue(x, y, text); setCellValueEx(x, y, cellColor, text, textColor); } public void updateView(){ for (int i = 0; i < model.length; i++){ for (int j = 0; j < model[i].length; j++){ updateCellView(i, j, model[i][j]); } } } public void onMouseLeftClick(int x, int y){ if (isGameStopped){ return; } if (model[x][y] != 0){ return; } model[x][y] = currentPlayer; updateView(); currentPlayer = currentPlayer==1? 2 : 1; } }