PROJECT: Java Schools [MVP] - #1

MVP

Add appropriate exception handling routines.

• You must specifically handle the following exceptions:
  • a resource is not found where it should be - for example, you look up a student who is not there
  • a resource is found where it should not be - for example, you try to enroll a student in a course where they are already enrolled
  • a non-handled endpoint is accessed (a URL not found exception)
• All other exceptions should be handled by some generic exception handled that you provide.
• All exception messages should start with the phrase "Found an issue with School: " followed by any system-generated messages you think appropriate.
• The following is the format for the error messages
  • Title - The title of the exception
  • Status - Http Status Code
  • detail - Detailed message for the client
  • timestamp - date and time of the exception
  • developer - message for developers about this error message, things like class and code causing the error
  • List of Validation Errors - If data validation errors caused this error, the list of them will appear here

This change is