Simple,
Look at the stack trace that the StackOverflowError produces so you know where in your code it occurs and use it to figure out how to rewrite your code so that it doesn't call itself recursively (the likely cause of your error) so it won't happen again.
StackOverflowErrors are not something that needs to be handled via a try...catch clause but it points to a basic flaw in the logic of your code that needs to be fixed by you.
