Intparse error. I have been trying to fix for hours.

[TBB3]

I am trying to create a method that when called will break an String consisting of an integer into individual digits, then converting these digits into integers and fill an array with these integers.

I keep getting the error:
java.lang.NumberFormatException: For input string: ""
at java.lang.NumberFormatException.forInputString(Num berFormatException.java:65)
at java.lang.Integer.parseInt(Integer.java:504)
at java.lang.Integer.parseInt(Integer.java:527)
at add.stringSplit(add.java:56)
at add.main(add.java:27)"

I feel really stupid and have been looking for solutions online, but I can't find anything relevant.
Any help would seriously be appreciated. I wasted my whole Saturday on this.

    private int[] stringSplit (String fullString)
    {
        int[] tempArray = new int[fullString.length()];
        for(int i = 0; i < fullString.length(); i++)
        {
            String  x = fullString.substring(i,i);
            tempArray[(i)] = Integer.parseInt(x);
        }
        return tempArray;

[helloworld922]

Read the documentation for the substring method. The end index is not included in the resultant substring.

[javapenguin]

// Java doc

public String substring(int beginIndex,
               int endIndex)
 
Returns a new string that is a substring of this string. The substring begins at the specified beginIndex and extends to the character at index endIndex - 1. Thus the length of the substring is endIndex-beginIndex.
 
Examples:
 
     "hamburger".substring(4, 8) returns "urge"
     "smiles".substring(1, 5) returns "mile"
 
 
Parameters:
    beginIndex - the beginning index, inclusive.
    endIndex - the ending index, exclusive.
Returns:
    the specified substring.
Throws:
    IndexOutOfBoundsException - if the beginIndex is negative, or endIndex is larger than the length of this String object, or beginIndex is larger than endIndex.

You are telling it to return a substring of nothing.

[TBB3]

Ah, thank you very much. I knew it would be something simple in the end, which made it even more frustrating!

Say you are wanting to return a substring of the final letter, would you still tell it to stop at a point after the word that doesn't exist?

For example, would this work?

"hamburger".substring(8, 9) returns "r"

Really appreciate the help guys.

[helloworld922]

yes, that's correct (try it yourself and see).