My most common use of reflection in real production code is doing things
like reading a config file into an annotated POJO. I like this because
of its type safety - can use reflection to determine the type of a
field, extract it from a config file (using the appropriate validation
rules for that type), and there is no risk of things being out of sync.
Adding a new config file option is just a matter of adding a new field
to a class. Annotations are quite nice here to specify any additional
validation rules to apply (e.g. an integer in the range 1 to 10).
So I like reflection in this case because it localizes dynamic typing to
a small area in the code - everything else can be statically typed.
Alan
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