java - Sorting Arraylist for a string but only by date -

i have arraylist contains "2013-7-13 \n 12 hour(s) 23 minute(s) " such kind of records. how can sort date.

piece of code:

string date1 = c.getstring(c.getcolumnindex(tabprodb.key_date) ); string time1 = c.getstring(c.getcolumnindex(tabprodb.key_time) ); string date_time1 = date1 + "\n" +time1; toast.maketext(history.this, date_time1, toast.length_short).show(); listitems.add(date_time1); 

create own comparator<string> implementation, following:

note there no error checks, it's show how it.

 public static void main(string[] args) {      list<string> strings =         arrays.aslist("2013-7-13 \n 12 hour(s) 23 minute(s)",             "2013-7-10 \n 12 hour(s) 23 minute(s)");      collections.sort(strings, new comparator<string>() {        @override       public int compare(string o1, string o2) {          simpledateformat format = new simpledateformat("yyyy-mm-dd");          date date1;         date date2;         try {           date1 = format.parse(o1.split(" ")[0]);           date2 = format.parse(o2.split(" ")[0]);         } catch (parseexception e) {           throw new illegalargumentexception("could not parse date!", e);         }          return date1.compareto(date2);       }     });       system.out.println(strings);    }