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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 email = "123456789@gamil.com";
  10. 		System.out.println(email.replaceAll("(\\G(?!^)|^[^@]{2})[^@](?=[^@]{2,}@)", "$1*"));
  11. 	}
  12. }
Success #stdin #stdout 0.07s 33848KB
comments (?)
stdin 
Standard input is empty
stdout 
12*****89@gamil.com
https://ideone.com/aooEEI
language:
Java (HotSpot 12)
created:
4 years ago
visibility:
secret

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