Thread: Counting # of 7's in an integer

Hi everyone, I'm in an entry level Java class and I'm supposed to be able to count the # of 7's within an integer. I've read the chapters and looked online for help but can't seem to figure it out. We just learned loops (do, while, for) and if statements so I'm thinking I need to use some of those to solve it. Here's what I came up with so far:

public class CountSevens 
{
public static void main(String[] args) 
{
    // ask the user for input and assign to a variable
    System.out.print("Please enter an integer: ");
    Scanner in = new Scanner(System.in);
    int number = in.nextInt();
 
    // calculate the number of digits that have a 7
    int count = 0;
    if (number == 0)
    {
        System.out.println("There are no 7's.");
    }
    while (number % 10 == 7)
    {
        count++;
        number = number/10;     
    }
    System.out.println(count);
}
}

Thanks for any help!