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  1. import java.util.regex.*;
  2.  
  3. class Ideone
  4. {
  5. 	public static void main (String[] args) throws java.lang.Exception
  6. 	{
  7. 		System.out.println("[a]".replaceAll("[]\\[]", ""));
  8. 	}
  9. }
Success #stdin #stdout 0.09s 47860KB
comments (?)
stdin 
Standard input is empty
stdout 
a
https://ideone.com/q9OGTm
language:
Java (HotSpot 12)
created:
2 years ago
visibility:
secret

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