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  1. import java.util.*;
  2. import java.lang.*;
  3. import java.io.*;
  4.  
  5. class Ideone
  6. {
  7. public static void main (String[] args) throws java.lang.Exception
  8. {
  9. String s = "10000000001000000000101000000001";
  10. String[] octets = s.split("(?<=\\G.{8})");
  11. System.out.println(Arrays.toString(octets));
  12. }
  13. }
Success #stdin #stdout 0.04s 2184192KB
stdin
Standard input is empty
stdout
[10000000, 00100000, 00001010, 00000001]