error during grouping files based on the date field

error during grouping files based on the date field

I have a large file which has 10,000 rows and each row has a date appended
at the end. All the fields in a row are tab separated. There are 10 dates
available and those 10 dates have randomly been assigned to all the 10,000
rows. I am now writing a java code to write all those rows with the same
date into a separate file where each file has the corresponding rows with
that date.
I am trying to do it using string manipulations, but when I am trying to
sort the rows based on date, I am getting an error while mentioning the
date and the error says the literal is out of range. Here is the code that
I used. Please have a look at it let me know if this is the right
approach, if not, kindly suggest a better approach. I tried changing the
datatype to Long, but still the same error. The row in the file looks
something like this: Each field is tab separated and the fields are:
business id, category, city, biz.name, longitude, state, latitude, type, date
**
qarobAbxGSHI7ygf1f7a_Q ["Sandwiches","Restaurants"] Gilbert Jersey Mike's
Subs -111.8120071 AZ 3.5 33.3788385 business 06012010
** The code is:
File f=new File(fn);
if(f.exists() && f.length()>0)
{
BufferedReader br=new BufferedReader(new FileReader(fn));
BufferedWriter bw = new BufferedWriter(new
FileWriter("FilteredDate.txt"));
String s=null;
while((s=br.readLine())!=null){
String[] st=s.split("\t");
if(Integer.parseInt(st[13])==06012010){
Thanks a lot for your time..