help with reflection

[Marco Vanoli]

Hi,
I have a javabean;
in my program i have to analyze the bean , then put in a list all properties name (String) that have a set method and also a get method. (some properties could have only get or set method).

What can i use to do this work..??

I thinked to use the java.lang.reflect showMethods(bean) but i have to parse all stings and make checks for get and set.. it is cumbersome.

Isn' t there a quickest pratice to do this?
tnk

[Ernest Friedman-Hill]

The java.beans.Introspector class does exactly what you need. It provides all the information in a nicely structured way.

[Marco Vanoli]

Yes think this is the right way but no example ho to use it

can somebody gimme an example of how to use Introspector on a bean to show its properies?

tnk

[Michael Ernest]

Use Introspector's getBeanInfo() method and provide the class that has your bean properties as an argument. This method returns a BeanInfo object which will then return a list of properties from the class.

The challenge to you is to try it; post your code here for review if you like. More than happy to help you with code that isn't quite doing what you want.

[Marco Vanoli]

Nice , i do it

Class c;
c = Class.forName("full.Fuzzy.BetaSet");
BeanInfo b = Introspector.getBeanInfo(c );

PropertyDescriptor[] pd = b.getPropertyDescriptors();
      for (int i = 0; i < pd.length; i++) {
         String pdString = pd[i].getName();
         System.out.println( pdString);}

Is it ok? It seems to work ..

Thank you very much!

[Michael Ernest]

Nicely done; nothing to it.