Creating URL from strings: absolute and realtive URLS

URLCreator.java

import java.net.URL;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.MalformedURLException;

public class URLCreator {
    public static void main(String[ ] args) throws MalformedURLException, URISyntaxException {
        //base URL
        URL urlPlateform = new URL("http://somehost.com/context");
        
        //relative URL we want to add to the base URL
        //since it's impossible to create 'relative' URL, we create URI to be able to verify it
        URI uriRelative = new URI("relative");
      
        //complete URL created as URI
        URI uriComplete = new URI("http://somehost.com/relative");
        
        //when URI to add to the base URL is relative, the result is a valid URL concatenating base URL ans relaive URL
        System.out.println(creerURL(uriRelative, urlPlateform).toString());
        //when URI to add to the base URL is absolute, the result is a valid URL created from the abolute URI (ignoring base URL)
        System.out.println(creerURL(uriComplete, urlPlateform).toString());

    }
    
    public static URL creerURL(URI uri, URL baseURL) throws MalformedURLException {
        if (!uri.isAbsolute()) {
            String nouveauURL = baseURL.toString() + "/" + uri.getPath();
            return new URL(nouveauURL);
            // return new URL(baseURL, (baseURL.getPath() + "/" + uri.getPath()));
        }
        return uri.toURL();
    }
    
    public static URL creerURLv2(URI uri, URL baseURL) throws MalformedURLException {
        if (!uri.isAbsolute()) {
            return new URL(baseURL, (baseURL.getPath() + "/" + uri.getPath()));
        }
        return uri.toURL();
    }
}