How to get the attribute...?

Question

well im trying to create JTable from a vector which will contain random Objects from random classes haveing random number of attributes for example:
class x{
int id;
String name;
String surname;
class y {
String title;
String author;
etc.
like i said i have a vector of such objects and wanna make a JTable from it... i tried to make it like this:
JTable table = new JTable(vector a, vector b)
but i get nullpointer exception because (i supose) vector b had objects of class x and it cant be converted somehow to JTable rows...
so im trying to make an array[][] which should contais all objects with all attributes of one of those classes
well i dont know if u will understand what im talking about cause my english sux...
anyway the problem is that:
lets say i have a vector containing:
new x(1,"a","b")
new x(2,"x","y")
etc
lets say my vector is v
how to get gor example any string from first object?
i had something like this:
v.get(i).getClass().getFields()[k]
where:
- i is the i element in vector
- k is the attrribute which i wanna get
i tried many combinations (after i get Field) but all i get was something like:
java.lang.reflect.Field
or
java.lang.String
and i want to get for example "a" not a type:/
plz helkp me if u can or tell me how to do something like this in other way:/
thx alot for all answers...

Answer 1

well it is not a Swing problem...
maybe u dont understand the problem...
lets say i have a class
Person{
int id;
String name;
String surname;
and the array in main:
Person[] people;
lets say that there is 100 people...
and i wanna to outprint first person surname BUT without useing Person class methods...
so i should do something like
System.out.pintln(""+
Person[1].getClass().... <--> and what next?
in other words how to get and outprint a String attribute from java.lang.Class