How struts invoking form getters and setters of a property

hi,
can anyone explain me how struts framework was calling the form properties getters and setters
i have an idea like preparing a string such that
if propert of text box is propertName, preparring a string with get and set making first letter capital
setPropertyName
getPropertyName
and invoking that method in form property
but i dont think this is the exact way struts follow , there could be a prcise and direct way to invoke propert methods
i have another idea
getting the declared method of the form class and search for the string propertyname in the methods name, and sure this is also not perfect way
with regards
satya

can anyone tell where i can find libraries for access/manipulate beans.
and sample example to invoke getters and setter of the property but not like preparing String "setPropertyName" or "getPropertyName" and invoking the method i beleive there should be standard way
and also setPropertyName may take different type parameters i cannot keep number of if conditions to check for different datatypes
with regards
satya

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