java - sort arrays of array in lexiographical order -

i wondering how can sort arrays of array. example, have got char array like

0[a,b] 1[b,a] 2[a,a] 

and should sorted to:

0[a,a] 1[a,b] 2[b,a] 

in other words want sort different array locations in lexicographical order.

you can define implementation of comparator<t> that, t array of type wish sort lexicographically:

string[][] = ... arrays.sort(a, new comparator<string[]>() {     compare(string[] lhs, string[] rhs) {         // compare lhs rhs, , return result indicates         // 1 comes earlier lexicographically     } });