Integer.parseInt() takes a String and turns it into a number.
To get each character use the String.toCharArray();
For example you can do the following:
String num = "12345";
char[] arr = num.toCharArray();
for (char n : arr)
{
int i = Integer.parseInt(n + "");
print(i);
}
BTW the n+"" is a shortcut to turn n into a String.