Enumeration how to go beginning element of a reqest.getParameterNames()

Question

if i do
Enumeration enu_p = req.getParameterNames();
twice will i get the parameterNames in same order - each time - i need to go through the list of paarmeter names twice in same order - if not how can i set the Enumeration object back to beginning so that i can go through each item twice?
ie.i have an Enumeration object , i loop through each item and do stuff then i want to start from the beginning of the enumaration an loop throough again - how can i do this .
or is it best to use some other collection object like list - if so how would i do that - could some one show some sample code - thanks
Enumeration enu_p = req.getParameterNames();
      while(enu_p.hasMoreElements()){....do stuff...}
//then need to set cursor  to beginning of enu_p and do
       while(enu_p.hasMoreElements()){....do stuff...}

Answer 1

ok thanks - this is what i actually do now - but wasnt sure if i would get paramters in same order as i 'm trying to do set some attributes in a prepared statement dynamically ie. - if a parameter is entered by user then incude it in the query so round on while loop i'm finding all the case where a parameter is enetred so formulating the string for prepared statement and the in 2nd wjile loop im going round all paramters and setting the values into the ? postions of the prepared statement - not sure if it'll work and its a bit messey but couldnt think of a better way - does any one else know of a better way of building a dynamic prepared statement ?
i'm going to post this under a new heading as my real question is is there a better way of creating a dynamic prepared statement