regex Archives - Page 28 of 29

Understanding regex in Java: split(“\t”) vs split(“\\t”) – when do they both work, and when should they be used

When using "\t", the escape sequence \t is replaced by Java with the character U+0009. When using "\\t", the escape sequence \\ in \\t is replaced by Java with \, resulting in \t that is ...

April 8, 2022
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How to match “any character” in regular expression?

Yes, you can. That should work. . = any char except newline \. = the actual dot character .? = .{0,1} = match any char except newline zero ...

April 7, 2022
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What does regular expression \\s,\\s do?

What does regular expression \\s*,\\s* do?

April 7, 2022
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Range of valid character for a base 64 encoding

I am interested in the following:Is there a list of characters that would never occur as part of a base 64 encoded string?For example *. I ...

April 6, 2022
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List of all special characters that need to be escaped in a regex

You can look at the javadoc of the Pattern class: http://docs.oracle.com/javase/8/docs/api/java/util/regex/Pattern.html You need to escape any char listed there if you want the ...

April 5, 2022
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Regular Expressions on Punctuation

April 4, 2022
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How to extract a substring using regex

Assuming you want the part between single quotes, use this regular expression with a Matcher: Example: String mydata = "some string with 'the data ...

April 4, 2022
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How to represent a fix number of repeats in regular expression?

April 4, 2022
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Using regex to match any character except =

I am trying to write a String validation to match any character (regular, digit and special) except =. Here is what I have ...

April 3, 2022
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How to use regex in String.contains() method in Java

String.contains String.contains works with String, period. It doesn’t work with regex. It will check whether the exact String specified appear in the current ...

April 3, 2022
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