java.util.regex.PatternSyntaxException: Unclosed character class near index 3 [[]] ^

  1. 0

    Replace All `[ ]` character from the string

    Stack Overflow | 2 years ago | RishiKesh Pathak
    java.util.regex.PatternSyntaxException: Unclosed character class near index 3 [[]] ^
  2. 0

    Exception in thread "main" java.util.regex.PatternSyntaxException: Unclosed character class near index 41 ,"Metadata"[a-zA-Z0-9:{}" ,+()[]\_==*]*[}]

    Stack Overflow | 12 months ago | user3083516
    java.util.regex.PatternSyntaxException: Unclosed character class near index 41 ,"Metadata"[a-zA-Z0-9:{}" ,+()[]\_==*]*[}] ^
  3. 0

    Examples fail with RegEx exception

    GitHub | 3 years ago | fjenett
    java.util.regex.PatternSyntaxException: Unexpected internal error near index 1 \ ^
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  5. 0

    Not work for version 2.21 and later

    GitHub | 2 years ago | qianlvable
    java.util.regex.PatternSyntaxException: Unexpected internal error near index 1 \ ^
  6. 0

    Errors while extracting several files from a folder

    GitHub | 3 years ago | jonzl
    java.util.regex.PatternSyntaxException: Illegal/unsupported escape sequence near index 3 C:\Users\user123\files\ ^

  1. Handemelindo 1 times, last 1 month ago
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Root Cause Analysis

  1. java.util.regex.PatternSyntaxException

    Unclosed character class near index 3 [[]] ^

    at java.util.regex.Pattern.error()
  2. Java RT
    String.replaceAll
    1. java.util.regex.Pattern.error(Pattern.java:1924)
    2. java.util.regex.Pattern.clazz(Pattern.java:2493)
    3. java.util.regex.Pattern.sequence(Pattern.java:2030)
    4. java.util.regex.Pattern.expr(Pattern.java:1964)
    5. java.util.regex.Pattern.compile(Pattern.java:1665)
    6. java.util.regex.Pattern.<init>(Pattern.java:1337)
    7. java.util.regex.Pattern.compile(Pattern.java:1022)
    8. java.lang.String.replaceAll(String.java:2162)
    8 frames
  3. Unknown
    Test.main
    1. Test.main(Test.java:8)
    1 frame