dynamically set data via setters at run time

[glen croteau]

I would like to dynamically set data via setters at run time.
For example:
I have a HashMap of name-value pairs:
color, blue


I would like to iterate this list and query a specific class to determine if it has a method setColor(String color).
Is this possible and also is it costly?

Thanks

[Vinoth Kumar Kannan]

You can very well use 'Reflections' - java.lang.reflect package to determine whether a class has a method with that name or not. Also, it is not costly as when ever a class is loaded by the JVM into its memory, a Class object is created for it internally and you are just going to query it. Just try diggin that package API, you'll get whatever you want.

[Paul Clapham]

There's also Introspection, which is specifically oriented towards Java Bean features like getters and setters.

[glen croteau]

Thanks! I got it using reflection.