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How can I find all matches to a regular expression in android. I founds it for Perl, Python etc but not for android.
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To count the number of regex matches, call the match() method on the string, passing it the regular expression as a parameter, e.g. (str. match(/[a-z]/g) || []). length . The match method returns an array of the regex matches or null if there are no matches found.
Throw in an * (asterisk), and it will match everything. Read more. \s (whitespace metacharacter) will match any whitespace character (space; tab; line break; ...), and \S (opposite of \s ) will match anything that is not a whitespace character.
The regular expression \b[A]\w+ can be used to find all words in the text which start with A. The \b means to begin searching for matches at the beginning of words, the [A] means that these matches start with the letter A, and the \w+ means to match one or more word characters.
If you need to know if a string matches a regular expression RegExp , use RegExp.prototype.test() . If you only want the first match found, you might want to use RegExp.prototype.exec() instead.
Here's an example:
import java.util.regex.Matcher;
import java.util.regex.Pattern;
...
// Find all the words of "foo bar".
Matcher m = Pattern.compile("\\w+").matcher("foo bar");
while (m.find()) {
System.out.println("Found: " + m.group(0));
}
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