Diagonal Star Challenge, not understanding it's concept?

So below is a solution of a diagonal star challenge, which basically prints out stars based on the value assigned to the given parameter. Now I understand how nested loops functions, i will be compared with the index of j, but what I don't understand is, how is it printing out stars in a each row when there is only 1 if statement? If the loop meets one of it's conditions should it not just print out 1 star on each row? Why is it creating so many different patterns from just a single if statement?

public static void printSquareStar(int number) {
    if (number < 5) {
        System.out.println("Invalid Value");
    } else {
        for (int i = 0; i < number; i++) {
            for (int j = 0; j < number; j++) {
                if (i == 0 || j == 0 || i == j || i == (number - 1) ||
                    j == number - 1 || i + j == (number - 1)) {
                    System.out.print("*");
                }
                //none of these operations work then just leave a space
                //on that column
                else {
                    System.out.print(" ");
                }
            }
            //creates a new row
            System.out.println();
        }
    }
}

output:

*****
** **
* * *
** **
*****

In your If statement it prints a * I or j fits the criteria. the || is or, so it is saying if (i == 0 or j == 0 OR i == j OR i == (number - 1)
OR j == number - 1 OR i + j == (number - 1)) then print a *, but if I or j doesn't not fit that print a space. You could have an if else for every other case which would make it easier to read.