ADDITIONAL SYSTEM INFORMATION :
Linux Mint 19
java version "11" 2018-09-25
Java(TM) SE Runtime Environment 18.9 (build 11+28)
Java HotSpot(TM) 64-Bit Server VM 18.9 (build 11+28, mixed mode)

A DESCRIPTION OF THE PROBLEM :
Creating an XML file with the attached source code works, but many error messages appear in the console

REGRESSION : Last worked in version 10.0.2

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Run the source code and look at the console

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
No error messages
ACTUAL -
Error messages

---------- BEGIN SOURCE ----------
import java.io.FileNotFoundException;
import java.io.FileOutputStream;

import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.TransformerFactoryConfigurationError;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;

import org.w3c.dom.Document;
import org.w3c.dom.Element;

public class XMLWarning {
public static void main(String[] args) {
try {
Document dom = DocumentBuilderFactory.newInstance().newDocumentBuilder().newDocument();
Element rootEle = dom.createElement("doc");
Element e = dom.createElement("val1");
e.appendChild(dom.createTextNode("val2"));
rootEle.appendChild(e);
dom.appendChild(rootEle);
Transformer transformer = TransformerFactory.newInstance().newTransformer();
DOMSource domSource = new DOMSource(dom);
StreamResult streamResult = new StreamResult(new FileOutputStream("Test.xml"));
transformer.transform(domSource, streamResult);
} catch (ParserConfigurationException | FileNotFoundException | TransformerException | TransformerFactoryConfigurationError e) {
e.printStackTrace();
}
}
}
---------- END SOURCE ----------

FREQUENCY : always