Question

I get the following error in my java code:

Exception in thread “main” java.lang.StringIndexOutOfBoundsException: String index out of range: 6

…which occurs at the following line:

if (strFactor.charAt(j) == strProduct.charAt(k)) {

Here is the code:

       for (int j=0; 0<=5; j++) {
            same = false;
            for (int k=0; k<=5; k++) {
                if (strFactor.length() == 6 && strProduct.length() == 6) {
                    if (strFactor.charAt(j) == strProduct.charAt(k)) {
                        same = true;
                    }
                }
            }
            if (!same) {
                return false;
            }
        }

Anyone have any idea why the index would ever be out of range?

Answer 1

I’m no Java programmer, but 0<=5 will always evaluate to true, so j reaches 6 (and would keep going were it not for that exception).