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  1. import javax.script.Invocable;
  2. import javax.script.ScriptEngine;
  3. import javax.script.ScriptEngineManager;
  4.  
  5. class Ideone
  6. {
  7.     public static void main(String[] args) throws Exception
  8.     {
  9.         System.out.println(("aa").replaceAll("(a)(?!b)\\1", "c"));
  10.     }
  11. }
  12.  
Success #stdin #stdout 0.11s 320576KB
comments (?)
stdin 
Standard input is empty
stdout 
c
https://ideone.com/62pe45
language:
Java (12.0.1)
created:
10 years ago
visibility:
public

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