Suggestions for sorting dates

Question

Hi everyone,
Im in need of sorting a few Date objects in descending order.
I was thinking of storing them in some sort of vector/array but not sure how i could swap the objects in those positions.
eg. if date at vector.elementAt(4) > date at vector.elementAt(0) swap positions.
What would you people recommend i use to sort dates?

Answer 1

i've been trying to add dates to an array but its not adding for some reason. here is a bit of my code:
         Date[] dates = new Date[500];
                       z = 0;
               for (x=0;x<books.size();x++)
                  for (y=0;y<((Book)books.elementAt(x)).transactions.size();y++)
                     if ((((Transaction)((Book)books.elementAt(x)).transactions.get(y)).memberID).equals(memberID))
               dates[z] = (((Transaction)((Book)books.elementAt(x)).transactions.get(y)).dateRent);
                        z++;
                        System.out.println (dates[z]);
               }i know the dates are not adding to the array because when i try to print it out i just get null. and i know there is no problem with the dates im trying to add because i can print them out fine.