Types of Exceptions
Here are two of the rules about how
try/catch blocks work:
- The first
catch{} block to match the type of exception thrown
is the one that gets control.
- The most specific exception types should appear first in the structure,
followed by the more general exception types.
To make full sense of these rules you need to know more about exception types.
Here is a hierarchy diagram of Exception:
In arranging the try{} blocks, a child class should
appear before any of its ancestors.
If class A is not an ancestor or descendant of class B,
then it doesn't matter which appears first.
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