Question

I am trying to store a string into an integer array with the following code:

public LargeInteger(String s) {      
    for (int i = 0; i < s.length(); i++) {
        intArray[i] =  Integer.parseInt( s.charAt(i));
    }
}

eclipse is giving me an error saying: the method parseInt(string) is not applicable for the arguments (char)

What am I doing wrong?

Answer 1

You need to parse the char, or convert it to a String.

If you’re trying to get one digit at a time, and you know your input is a digit, then the easiest way to convert a single digit to an int is just

intArray[i] = Character.digit(s.charAt(i), 10); // in base 10

If you want to keep using Integer.parseInt, then just do

intArray[i] = Integer.parseInt(String.valueOf(s.charAt(i)));
// or
intArray[i] = Integer.parseInt(s.substring(i, i+1));