Aug 16, 2017 · How to use regex with String.matches in java Asked 8 years, 4 months ago Modified 8 years, 3 months ago Viewed 27k times

While substring looks for a specific string or value, regex looks for a format. It's more and more dynamic. You need regex, if you are looking for a pattern instead of a special value.

The regular expression means "a string containing a word, a space, one or more digits (which are captured in group 1), a space, a set of words and spaces ending with a space, followed by a time …

What I'm really interested in are the Java calls to take the regex string and use it on the source data to produce the value of [some number]. I should add that I'm only interested in a single [some number] …

Jan 14, 2023 · 364 Does Java have a built-in way to escape arbitrary text so that it can be included in a regular expression? For example, if my users enter "$5", I'd like to match that exactly rather than a …

Jan 19, 2012 · A casual Google of "java string matches documentation" reveals, in the top result, the phrase "str.matches (regex) yields exactly the same result as the expression".

In Java for String class there is a method called matches. How to use this method to check if my string has only digits using regular expression? I tried with below examples, but both of them retur...

Nov 26, 2013 · Note how with java you don't have to code the start (^) and end ($) of input, because String.matches() must match the whole string, so start and end are implied. However, this is just a …

Mar 25, 2012 · I have a string: String str = "a + b - c * d / e < f > g >= h <= i == j"; I want to split the string on all of the operators, but include the operators in ...

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 String or not. Note that String.contains does not …