Program To Detect Number 7 And Its Multiples

I just started learning Java, I was asked to write a simple program that prints a message if it encounters the number 7 or its multiple.

This should be achievable using simple loops and simple operations...

Here is my attempt:

Java Code:

Scanner scan = new Scanner(System.in);
int i, j, temp;
i = scan.nextInt(); // Awaiting user input
j = scan.nextInt(); // Awaiting user input
if (i > j){ // i = 10 j = 0
temp = i; // temp = 10

[Code]...

Now it works fine for numbers that are less than 70...

Example for output with i = 15, and j = 25:

Java Code:

15
16
!!!
18
19
20
!!!
22
23
24
25 mh_sh_highlight_all('java');

I am not sure what to do in case if for example 'i' and 'j' are very big numbers

I mean, I need it to detect the 7s even if it in the thousands place, actually - no matter how big is the number... So far I only made it to work for numbers that are less than 70...