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  1. import java.util.*;
  2. import java.util.regex.*;
  3.  
  4. class Ideone
  5. {
  6. 	public static void main (String[] args) throws java.lang.Exception
  7. 	{
  8. 		 String exp = "foofoobarfoo";
  9.          exp = Pattern
  10.                 .compile("(foo)(foo)")
  11.                 .matcher(exp)
  12.                 .replaceAll(gr -> gr.group(1) + "911" + gr.group(2) + "911");
  13.  
  14.         System.out.println(exp); //  foo911foo911barfoo
  15. 	}
  16. }
Success #stdin #stdout 0.15s 48736KB
comments ()
stdin
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Standard input is empty
stdout
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foo911foo911barfoo
https://ideone.com/h1NqtN
language:
Java (HotSpot 12)
created:
2 years ago
visibility:
secret

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