Question

I FINALLY have the map and points(arrays) working for my app. Quick question: I have a fatal exception with substring(), a “stringIndexOutOfBoundException”

In general, what is that referring to?

An I going past the end of a string using substring()?

Thanks,

Answer 1

Yes, you’re going past the end of your strings bounds generally.

The Java API even tells you so…

IndexOutOfBoundsException – if beginIndex is negative or larger than the length of this String object.

You should get used to using the API. It tells you what exceptions a method throws and why.

Try printing the Strings length and value before attempting substring. That’ll help you see the problem.

For example…

String testing = "Hello StackOverflow";
System.out.println("Length of testing = " + testing.length);
System.out.println("Value of testing = " + testing);
testing.substring(1,2);