Java Programming

Hi,
I am trying to sort an arrayList which has numbers as values.

Data in arrayList: 9, 8, 70, 7, 69, 68, 67, 66, 65, 64, 63, 62, 61, 60, 6, 59, 58, 57, 56, 55, 54, 53, 52, 51, 50, 5, 49, 48, 47, 46, 45, 44, 43, 42, 41, 40, 4, 39, 38, 37, 36, 35, 34, 33, 32, 31, 30, 3, 29, 28, 27, 26, 25, 24, 23, 22, 21, 20, 2, 19, 18, 17, 16, 15, 14, 13, 12, 11, 10, 1

<code>
package test;
import java.util.ArrayList;
import java.util.StringTokenizer;
import java.util.Collections;

public class ReadLine {

/**
* @param args
*/
public static void main(String[] args)
{
String test="9, 8, 70, 7, 69, 68, 67, 66, 65, 64, 63, 62, 61, 60, 6, 59, 58, 57, 56, 55, 54, 53, 52, 51, 50, 5, 49, 48, 47, 46, 45, 44, 43, 42, 41, 40, 4, 39, 38, 37, 36, 35, 34, 33, 32, 31, 30, 3, 29, 28, 27, 26, 25, 24, 23, 22, 21, 20, 2, 19, 18, 17, 16, 15, 14, 13, 12, 11, 10, 1";
ArrayList<String> arrayList=new ArrayList<String>();
StringTokenizer stringTokenizer=new StringTokenizer(test);
while (stringTokenizer.hasMoreElements())
{
arrayList.add(stringTokenizer.nextToken(","));
}
Collections.sort(arrayList);
System.out.println(arrayList);
}
}

</code>
The above code sorts the arraylist but the output is:
1, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 2, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 3, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 4, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 5, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 6, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 7, 70, 8, 9

which should have been rather like 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16 and so on....


Thanks in advance
regards
Prashanth