protected void tearDown(){
  objArray=null;
  myobjArray=null;
  ll=null;
  myll=null;
  reversedLinkedList=null;
  myReversedLinkedList=null;
  s=null;
  mys=null;
  hm=null;
}

protected void tearDown ( ) { objArray = null ; myobjArray = null ; ll = null ; myll = null ; reversedLinkedList = null ; myReversedLinkedList = null ; s = null ; mys = null ; hm = null ; }
tears down the fixture , for example , close a network connection . this method is called after a test is executed .
