if (obj!=null) { if (memberObjHash.contains(obj))  { memberObjHash.remove(obj); return obj; } else return null;
if (memberObjHash.contains(obj))  { memberObjHash.remove(obj); return obj;
  public Object removeMemberObject (Object obj) {     if (obj!=null) {      if (memberObjHash.contains(obj))  {        memberObjHash.remove(obj);        return obj;      }      else        return null;    }    else      return null;  }