What is a professional resource that you would use to help programmers learn more about troubleshooting structures?

ASSIGNMENT

How do we know the results of these Java programming calculations are correct?
What is the best way to manage large embedded structures in Java?
What is a professional resource that you would use to help programmers learn more about troubleshooting structures?
Why did you choose this resource?
How would a professional programmer use this resource to become more efficient at using structures?
Please be sure to validate your opinions and ideas with citations and references in APA format.