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java - how to get URL using relative path

I have a URL:

URL url=new URL("http://www.abc.com/aa/bb/cc/file.html");

and a relative path:

String relativePath="../file2.html"; //maybe is "/file3.html"

I want to get http://www.abc.com/aa/bb/file2.html using variable url and relativePath

How to do it?

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new URL(url, relativePath);

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