non - Java Regular Expression removing everything but numbers from String
java remove non alphabetic characters from string (3)
I have two strings
string1 = 44.365 Online order
string2 = 0 Request Delivery. Now I would like to apply a regular expression to these strings that filters out everything but numbers so I get integers like
string1 = 44365 and
string2 = 0.
How can I accomplish this?
This is the Google Guava #CharMatcher Way.
String alphanumeric = "12ABC34def"; String digits = CharMatcher.JAVA_DIGIT.retainFrom(alphanumeric); // 1234 String letters = CharMatcher.JAVA_LETTER.retainFrom(alphanumeric); // ABCdef
If you only care to match ASCII digits, use
String digits = CharMatcher.inRange('0', '9').retainFrom(alphanumeric); // 1234
If you only care to match letters of the Latin alphabet, use
String letters = CharMatcher.inRange('a', 'z') .or(inRange('A', 'Z')).retainFrom(alphanumeric); // ABCdef
You can make use of the
^. It considers everything apart from what you have infront of it.
So if you have
[^y] its going to filter everything apart from y. In your case you would do something like
String value = string.replaceAll("[^0-9]","");
where string is a variable holding the actual text!
string1 = string1.replaceAll("[^0-9]", ""); string2 = string2.replaceAll("[^0-9]", "");