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  1. import java.util.*;
  2. import java.lang.*;
  3.  
  4. class Main
  5. {
  6. 	public static void main (String[] args) throws java.lang.Exception
  7. 	{
  8. 		System.out.println("aoeu".matches("(?<=\\\\().+?(?=\\\\){1})"));
  9. 	}
  10. }
Runtime error #stdin #stdout #stderr 0.07s 381248KB
comments (?)
stdin 
Standard input is empty
stdout 
Standard output is empty
stderr 
Exception in thread "main" java.util.regex.PatternSyntaxException: Look-behind group does not have an obvious maximum length near index 19
(?<=\\().+?(?=\\){1})
                   ^
	at java.util.regex.Pattern.error(Pattern.java:1924)
	at java.util.regex.Pattern.group0(Pattern.java:2812)
	at java.util.regex.Pattern.sequence(Pattern.java:2018)
	at java.util.regex.Pattern.expr(Pattern.java:1964)
	at java.util.regex.Pattern.compile(Pattern.java:1665)
	at java.util.regex.Pattern.<init>(Pattern.java:1337)
	at java.util.regex.Pattern.compile(Pattern.java:1022)
	at java.util.regex.Pattern.matches(Pattern.java:1128)
	at java.lang.String.matches(String.java:2063)
	at Main.main(Main.java:8)
https://ideone.com/AIxErd
language:
Java (12.0.1)
created:
10 years ago
visibility:
public

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