java - Sorting 2d string array with integer -

i created 2d string array (called data) contains on first position integer (as string) , on second position link file.

examples:

["3", "test3.pdf"]; ["1", "test1.pdf"];  ["2", "test2.pdf"];  ["10", "test10.pdf"] 

so need sort array ascending integer. result of sorting should sorted array like:

["1", "test1.pdf"];  ["2", "test2.pdf"];["3", "test3.pdf"];["10", "test10.pdf"] 

i found sample code this:

arrays.sort(data, new comparator<string[]>() {     @override     public int compare(final string[] entry1, final string[] entry2) {         final string time1 = entry1[0];         final string time2 = entry2[0];         return time1.compareto(time2);     } }); 

but problem is, in case compares string logic, result be-> 1,10,2,3. cannot archive result this. know can do? can have 2d array of 1 type? not mix of string , integer?

the comparison can done converting first element integer, demonstrated in following snippet:

arrays.sort(data, new comparator<string[]>() {     @override     public int compare(final string[] entry1, final string[] entry2) {         final integer time1 = integer.valueof(entry1[0]);         final integer time2 = integer.valueof(entry2[0]);         return time1.compareto(time2);     } });