Android replace with regex

Question

I have a string in Android. I would like to wrap all the instances of 4 or more continuous digits with some html. I imagine this will be done with regex, but I have a hard time getting even the most basic regular expressions to work.

Can someone help me with this?

I would like to change:

var input = "My phone is 1234567890 and my office is 7894561230";

To

var output = "My phone is <u>1234567890</u> and my office is <u>7894561230</u>";

Keppil · Accepted Answer · 2012-09-11 21:01:56Z

40

This will do it:

String input = "My phone is 1234567890 and my office is 7894561230";
String regex = "\\d{4,}";
String output = input.replaceAll(regex, "<u>$0</u>");
System.out.println(output);

answered Sep 11, 2012 at 21:01

Keppil

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3 Comments

raydowe Over a year ago

Amazing, I didn't realize you can use $# with String.replaceAll. That makes life way easier. Thanks.

Rahmathullah M Over a year ago

@Keppil, whats is this "\\d{4,}" . i want replace an <iframe src= with <a href= tag keeping the url same. how to get this done?

Keppil Over a year ago

@RahmathullahMPulikkal: \\d{4,} means 4 or more numbers. There are many posts on SO on how to search and replace strings, you should be able to find one to help you rather quickly.

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