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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. import java.util.regex.*;
  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 p = "[[abc]]";
  13.     	System.out.println("abc[]".replaceAll(p, ""));
  14. 		System.out.println("abc[]".replaceAll("[[]]", ""));
  15.  
  16.     }
  17. }
Runtime error #stdin #stdout #stderr 0.1s 320576KB
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stdin
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Standard input is empty
stdout
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[]
stderr
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Exception in thread "main" java.util.regex.PatternSyntaxException: Unclosed character class near index 3
[[]]
   ^
	at java.util.regex.Pattern.error(Pattern.java:1955)
	at java.util.regex.Pattern.clazz(Pattern.java:2548)
	at java.util.regex.Pattern.sequence(Pattern.java:2063)
	at java.util.regex.Pattern.expr(Pattern.java:1996)
	at java.util.regex.Pattern.compile(Pattern.java:1696)
	at java.util.regex.Pattern.<init>(Pattern.java:1351)
	at java.util.regex.Pattern.compile(Pattern.java:1028)
	at java.lang.String.replaceAll(String.java:2211)
	at Ideone.main(Main.java:14)
https://ideone.com/1d7U2v
language:
Java (HotSpot 12)
created:
10 years ago
visibility:
secret

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