Revise paste Untitled

import java.util.Random;
public class Main {

public static void main(String[] args) {
        Random random = new Random();
        char[][] mat = new char[3][3];
        
        for(int i = 0; i < 3; i++) {
            for(int j = 0; j < 3; j++) {
                int r = random.nextInt(100);
                if(r % 2 == 0) {
                    mat[i][j] = 'O';
                }
                else {
                    mat[i][j] = 'X';
                }
            }
        }
        for(int i = 0; i < 3; i++) {
            for(int j = 0; j < 3; j++) {
                System.out.print(mat[i][j]);
            }
            System.out.println();
        }
        String winner = "No winner";
        if(mat[0][0] == 'X' && mat[0][1] == 'X' && mat[0][2] == 'X') {
            winner = "X";
        }
        if(mat[0][0] == 'O' && mat[0][1] == 'O' && mat[0][2] == 'O') {
            winner = "O";
        }
        if(mat[1][0] == 'X' && mat[1][1] == 'X' && mat[1][2] == 'X') {
            winner = "X";
        }
        if(mat[1][0] == 'O' && mat[1][1] == 'O' && mat[1][2] == 'O') {
            winner = "O";
        }

if(mat[2][0] == 'X' && mat[2][1] == 'X' && mat[2][2] == 'X') {
            winner = "X";
        }
        if(mat[2][0] == 'O' && mat[2][1] == 'O' && mat[2][2] == 'O') {
            winner = "O";
        }
        if(mat[0][0] == 'X' && mat[1][0] == 'X' && mat[2][0] == 'X') {
            winner = "X";
        }
        if(mat[0][0] == 'O' && mat[1][0] == 'O' && mat[2][0] == 'O') {
            winner = "O";
        }
        if(mat[0][1] == 'X' && mat[1][1] == 'X' && mat[2][1] == 'X') {
            winner = "X";
        }
        if(mat[0][1] == 'O' && mat[1][1] == 'O' && mat[2][1] == 'O') {
            winner = "O";
        }
        if(mat[0][2] == 'X' && mat[1][2] == 'X' && mat[2][2] == 'X') {
            winner = "X";
        }
        if(mat[0][2] == 'O' && mat[1][2] == 'O' && mat[2][2] == 'O') {
            winner = "O";
        }

if(mat[0][0] == 'X' && mat[1][1] == 'X' && mat[2][2] == 'X') {
            winner = "X";
        }
        if(mat[0][0] == 'O' && mat[1][1] == 'O' && mat[2][2] == 'O') {
            winner = "O";
        }

if(mat[0][2] == 'X' && mat[1][1] == 'X' && mat[2][0] == 'X') {
            winner = "X";
        }
        if(mat[0][2] == 'O' && mat[1][1] == 'O' && mat[2][0] == 'O') {
            winner = "O";
        }
        System.out.println("The winner is: " + winner);

}
}