July 2017
Intermediate to advanced
158 pages
3h 41m
English
Content preview from Java 9 Regular Expressions
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Use predefined character classes instead of longer versions
We discussed predefined character classes and Unicode character classes in Chapter 2, Understanding the Core Concepts of Java Regular Expressions. We need to make good use of it. So use \d instead of [0-9] or \D instead of [^0-9], and use \w instead of [a-zA-Z_0-9] or \W instead of [^a-zA-Z_0-9].
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