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  1. #1
    aruna1 is offline Member
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    Default need help to make this regular expression

    hello,
    I'm trying to make a regular expression to read content of a text file under following restriction. "The text on file can consist only of lowercase English characters 'a' to 'z', the space character ' ' , '\', '{' and '}' "

    can some one help me to make regular expression that can match this kind of content?
    i tried following

    "[a-z]+|\\\\+|\\{+|\\}+" but didn't work

    thanks

  2. #2
    DarrylBurke's Avatar
    DarrylBurke is offline Member
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    Default

    It looks like you've been looking at someone else's regexes and tried to club something together without really understanding what each part does. All you need is a single character class containing all valid characters.
    Java Code:
    "[a-z \\\\{}]+"
    There's a great regex tutorial here:
    Regular Expression Tutorial - Learn How to Use Regular Expressions

    db

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