• Java Reflection makes it possible to inspect classes, interfaces, fields and methods at runtime, without knowing the names of the classes, methods etc. at compile time.


• It is also possible to instantiate new objects, invoke methods and get/set field values using reflection.


• Java Reflection is quite very powerful and can be very useful.


• When you mapping objects to tables in a database at runtime, like Butterfly Persistence does.
Or, when mapping the statements in a script language to method calls on real objects at runtime, like Butterfly Container does when parsing its configuration scripts.

It is a advanced feature and should be used only by developers. Developers who have a strong Knowledge of the fundamentals of the language.

• Debuggers:-Debuggers can able to examine private members on classes.


• Class Browsers:-A class browser needs to be able to count the members of classes.


• Visual Development Environments:-Visual development environments can give benefit from making use of type information available in reflection to help the developer in writing right code.


• Test Tools.