1. Exception Handling Strategies
2. Exception Handling Strategy - Overview
3. Exception Handling Requirements
4. Application Survival
5. Notifying Relevant Parties
6. Error Diagnostics and Reproduction
7. Separation of Abstraction Layers
8. More Readable and Maintainable Code
9. Error Location and Context
10. Error Causes, Types and Reactions
11. Strategy Elements
12. Error Detection
13. Error Information Gathering
14. Throwing Exceptions
15. Propagating Exceptions
16. Catching Exceptions
17. An Exception Handling Strategy Template
18. An Exception Class Template
19. Throwing the AppException
20. Propagating the AppException
21. The ErrorInfo List
22. Catching the AppException
23. Avoid Exception Hierarchies

Throwing exception is the next step after error detection and information gathering. When you detect an error, you need to determine if you need to throw an exception, and what information to include in that exception.

What information to embed in the exception is determined in the previous stage - Error Information Gathering

Here is a simple example:

String errorId = ...
String errorDescription = ...
String contextId = ....

throw new MyException(errorId, errorDescription, contextId);

Later in this tutorial trail I will show you an Exception class definition that is much better suited to address the requirements listed earlier in this trail.