How to sort array list wich is contain diffrent objects

[kavita vala]

I have a arraylist which contains objects
Like

  
Serviceprovider serv;
while(result.next())
 serv = new  Serviceprovider();  
 arraylist.add(serv);
}

In serv object i have different listing fields like name , email, postedate etc.
I have to sort this arraylist by postedate .

I do not want to write it in query because on later stage i divide this arraylist in two
different category.

How can i do it.


Please help for that
Thanks in advance .

[Jesper de Jong]

Use the method Collections.sort() that takes a List and a Comparator.

The Comparator is the thing that determines how the objects are sorted; implement your own Comparator that compares the objects by the fields that you want to sort on.

[Campbell Ritchie]

If the contents of your List are not appropriate for the Comparator<T>, you will suffer a ClassCastException. That is why you ought to be using the generic version of the List.