https://jsoup.org/: jsoup is a Java library for working with real-world HTML. It provides a very convenient API for extracting and manipulating data, using the best of DOM, CSS, and jquery-like methods. jsoup implements the WHATWG HTML5 specification, and parses HTML to the same DOM as modern browsers do. (Jonathan Hedley)
  • Jonathan Hedley 
package org.jsoup;

import java.io.IOException;

public class UncheckedIOException extends RuntimeException {
    public UncheckedIOException(IOException cause) {
        super(cause);
    }

    public UncheckedIOException(String message) {
        super(new IOException(message));
    }

    public IOException ioException() {
        return (IOException) getCause();
    }
}