java reflect will run 10 times longer than invoking method explicitly. however, it is not noticable, and most frameworks use that. don't worry, just use it; runtime should not be the major issue in java programming. as long as you don't let user wait couple of hours, it's acceptable.
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{
if ( name.equals("id")
{
id = value;
}
else
{
//etc.
}
}