Select drop-down list in jquery

  Get selected value using class :-

$(".drop_down_class").val();

Get selected value using Id :-

$("#drop_down_id").val();

Get text of selected value :-

$("#drop_down_id").text();

How to sort a hashset

Covert set into list than sort it using collection utill

A HashSet does not guarantee any order of its elements

Set unSortedHashSet = new HashSet();

List sortedList = new ArrayList(unSortedHashSet);

Collections.sort(sortedList);

Java Object Class

Java Object Class is the root of the class hierarchy. Every class has Object as a superclass. All objects, including arrays, implement the methods of this class.