Field.set(Object obj, Object value)

Question

As I parse an XML file (Using SAX XML Reader) I'm also building objects dynamically as I go on parsing. I'm using Field.set() successfully to assign values to String or Integer instance variables, but If one of these objects has an instance variable which is say, a vector. then how can I dynamically add (using addElement(object)) objects to it? Could please someone help?
// Get the Class object of member
// Assume member is the current object
Class memberClass = member.getClass();
// Dynamically access the instance variable
memberField = memberClass.getDeclaredField(currentElement);
// Set the value of the instance variable
memberField.set(member,newValue);
Thanks,
Ahmet

Answer 1

This is still a problem for me and I am yet to find a solution. I'd like to define the problem once again and hope for a suggestion that might lead to a solution:
I've got an object called "member" whose instance variables are dynamically being set from a SAX parser ContentHandler modules. In this "member" object all but one instance variables are of type String. With the below logic, I have no problem of setting values for these dynamically;
// Get the Class object of member
Class memberClass = member.getClass();
// Dynamically access the instance variable
memberField = memberClass.getDeclaredField(currentElement);
// Set the value of the instance variable, which is parsed value gotten from String s = new String(ch, start, end); in characters method in ContentHandler class
memberField.set(member,s);
The problem arises when I want to set the only instance variable in the member class which is of type Vector. My intention is to use xxxx.addElements(someObject) where someObject is already created and initialized. How can I use memberField.set(member,s) when the field is Vector and instead of setting a value I want to use addElements.