How can I find int values within a string

java string parsing int parseint
Fraser Price picture Fraser Price · Jun 12, 2013 · Viewed 9k times · Source

I have a string, e.g. "ksl13<br>m4n", and I want to remove all non-digit characters in order to get the int 134.

Integer.parseInt(s) obviously isn't going to work, but not sure how else to go about it.

Answer

assylias picture assylias · Jun 12, 2013

You can use a regex first:

String s = "ksl13 m4n";
String clean = s.replaceAll("\\D+",""); //remove non-digits

Then you can use Integer.parseInt:

int i = Integer.parseInt(clean);

and i will be 134.

Related questions

How to convert/parse from String to char in java?

How do I parse a String value to a char type, in Java? I know how to do it to int and double (for example Integer.parseInt("123")). Is there a class for Strings and Chars?

Read More
In Java, how do I parse XML as a String instead of a file?

I have the following code: DocumentBuilderFactory.newInstance().newDocumentBuilder().parse(xmlFile); How can I get it to parse XML contained within a String instead of a file?

Read More
How can I parse a String to BigDecimal?

I have this String: 10,692,467,440,017.120 (it's an amount). I want to parse it to a BigDecimal. The problem is that I have tried both DecimalFormat and NumbeFormat in vain.

Read More