Some magnificently shite code

INF1OP_NoughtsAndCrosses.java

public class NoughtsAndCrosses {
	boolean drawn;
	int winner;
	
	public NoughtsAndCrosses(int[][] board) {
		// First check all columns
		for (int x = 0; x < 3; x++) {
			Integer winner = board[x][0];
			
			// Check if all items in this column are the same
			for (int y = 0; y < 3; y++) { 
				if (board[x][y] == 0 || board[x][y] != winner) {
					winner = null;
					break;
				}
			}
			
			if (winner != null) {
				this.winner = winner;
				return;
			}
		}
		
		// First check all rows
		for (int y = 0; y < 3; y++) {
			Integer winner = board[0][y];
			
			// Check if all items in this row are the same
			for (int x = 0; x < 3; x++) { 
				if (board[x][y] == 0 || board[x][y] != winner) {
					winner = null;
					break;
				}
			}
			
			if (winner != null) {
				this.winner = winner;
				return;
			}
		}
		
		// Check diag 1
		winner = (board[0][0] == board[1][1] && board[1][1] == board[2][2] && board[0][0] == board[2][2]) ? board[0][0] : 0;
		if (winner != 0) {
			return;
		}
		
		// Check diag 2
		winner = (board[0][2] == board[1][1] && board[1][1] == board[2][0] && board[2][0] == board[2][0]) ? board[2][0] : 0;
		if (winner != 0) {
			return;
		}
		
		drawn = true;
	}
	
	public boolean isDraw() {
		return drawn;
	}
	
	public int whoWon() {
		return winner;
	}
}