Main Tutorials

How to validate URL in Java

A short example to show the use of apache.commons.validator.UrlValidator class to validate an URL in Java.


import org.apache.commons.validator.UrlValidator;

public class ValidateUrlExample{
	
	public static void main(String[] args) {
		
	    UrlValidator urlValidator = new UrlValidator();
		
	    //valid URL
	    if (urlValidator.isValid("https://mkyong.com")) {
	       System.out.println("url is valid");
	    } else {
	       System.out.println("url is invalid");
	    }

	    //invalid URL
	    if (urlValidator.isValid("http://invalidURL^$&%$&^")) {
	        System.out.println("url is valid");
	    } else {
	        System.out.println("url is invalid");
	    }
	    
	}
}

Output


url is valid
url is invalid

Reference

  1. http://commons.apache.org/validator/apidocs/org/apache/commons/validator/UrlValidator.html

About Author

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Founder of Mkyong.com, love Java and open source stuff. Follow him on Twitter. If you like my tutorials, consider make a donation to these charities.

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Armando
13 years ago

urlValidator.isValid(“www.mkyong.com”)
***** url is invalid 🙁 ****

Thor Wehage
13 years ago

Looks pretty easy to use.
I can’t figure out how to include it as a dependency in maven. Do you happen to know how ?

Like in (lorem ipsum data) :

org.apache.commons
validator
1.1.1

best regards,
Thor

Hussain A Wahid
11 years ago
Reply to  mkyong

Hi ,
I executed the exact code using downloading the jar from http://mirrors.ibiblio.org/maven2/commons-validator/commons-validator/1.1.0/commons-validator-1.1.0.jar

but it fails for both the URL , validates nothing

Hugo
10 years ago

I don’t know if you’re having this problem yet.
But, verify the jar’s version. I’ve downloaded the 1.1.0 and the code didn’t work too.
Then, I’ve tried the 1.3.1 and it worked fine.

pat
3 years ago

and yet “.com” is a valid url? or even “:80” ?

Vitalii
5 years ago

ctrl+c ctrl+v from source docs, very helpful

gjr
7 years ago

is this valid url – http://mail.go

this code returns invalid in commons-validator:jar:1.4.1
and i am sure there are more like this..

sandesh
9 years ago

This is also possible using jsoup and json.If we use this we can have customized validation like validating the java script for url ,validate url for pagination , validate url for color swatches etc

Tawkeer hussain
11 years ago

It works…thanks

Hussain A Wahid
11 years ago

Hi ,
I executed the exact code using downloading the jar from http://mirrors.ibiblio.org/maven2/commons-validator/commons-validator/1.1.0/commons-validator-1.1.0.jar

but it fails for both the URL , validates nothing

Satish Sharma
11 years ago

Is there any way to customize UrlValidator so that “www.mkyong.com” can be validated? I want to validate some url which does not have protocols. like:
http://www.mkyong.com

Thor Wehage
13 years ago

thanx 🙂