Please help with this Java problem!

package string.problems; 2 3 public class permutation { 000 N 50 public static void main(String[] args) { /* I * Permutation of String "ABC" is "ABC" "BAC" "BCA" "ACB" "CAB" "CA". * Write Java program to compute all Permutation of a String 10 11 12 13 12 }