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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6.  
  7. /* Name of the class has to be "Main" only if the class is public. */
  8. class Ideone
  9. {
  10. 	public static void main (String[] args) throws java.lang.Exception
  11. 	{
  12. 		String s = "09123456789";
  13. 		String r = s.replaceAll("(\\d{4})(\\d{3})(\\d{4})", "$1 $2 $3");
  14. 		System.out.println(r);
  15. 	}
  16. }
Success #stdin #stdout 0.04s 4386816KB
comments (?)
stdin 
Standard input is empty
stdout 
0912 345 6789
https://ideone.com/SLgOur
language:
Java (HotSpot 12)
created:
8 years ago
visibility:
public

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