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FULL PRODUCT VERSION :
java version "1.9.0-ea"
Java(TM) SE Runtime Environment (build 1.9.0-ea-b66)
Java HotSpot(TM) 64-Bit Server VM (build 1.9.0-ea-b66, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
Mac OS X 10.9.5

A DESCRIPTION OF THE PROBLEM :
The following code tries to convert a xml-string to a pretty-print-xml-string which works with jdk7 and jdk8 but not with jdk9 anymore.

REGRESSION. Last worked in version 8u45

ADDITIONAL REGRESSION INFORMATION:
java version "1.8.0_45"
Java(TM) SE Runtime Environment (build 1.8.0_45-b14)
Java HotSpot(TM) 64-Bit Server VM (build 25.45-b02, mixed mode)

java version "1.7.0_67"
Java(TM) SE Runtime Environment (build 1.7.0_67-b01)
Java HotSpot(TM) 64-Bit Server VM (build 24.65-b04, mixed mode)

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
just javac and java. test fails if runtimeexception is thrown

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -


Java Tutorials and Examples 1
en-us


ACTUAL -

Java Tutorials and Examples 1 en-us

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
import org.w3c.dom.Document;
import org.w3c.dom.bootstrap.DOMImplementationRegistry;
import org.w3c.dom.ls.DOMImplementationLS;
import org.w3c.dom.ls.LSOutput;
import org.w3c.dom.ls.LSSerializer;
import org.xml.sax.InputSource;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import java.io.StringReader;
import java.io.StringWriter;
import java.io.Writer;

public class PrettyPrint {
public static void main(String[] args) throws Exception {
String xml = "<rss version=\"2.0\"> Java Tutorials and Examples 1 en-us";
Writer stringWriter = createPrettyPrint(xml);
String actual = stringWriter.toString();
String expected = "<rss version=\"2.0\">\n"
+ " \n"
+ " Java Tutorials and Examples 1\n"
+ " en-us\n"
+ " \n"
+ "\n";

if (!actual.equals(expected)) throw new RuntimeException("not equal");
}

private static Writer createPrettyPrint(String xml) throws Exception {
DOMImplementationRegistry registry = DOMImplementationRegistry.newInstance();
DOMImplementationLS domImplementation = (DOMImplementationLS) registry.getDOMImplementation("LS");
Writer stringWriter = new StringWriter();
LSOutput formattedOutput = domImplementation.createLSOutput();
formattedOutput.setCharacterStream(stringWriter);
LSSerializer domSerializer = domImplementation.createLSSerializer();
domSerializer.getDomConfig().setParameter("format-pretty-print", true);
// Set this to true if the declaration is needed to be in the output.
domSerializer.getDomConfig().setParameter("xml-declaration", false);
domSerializer.write(toXmlDocument(xml), formattedOutput);
return stringWriter;
}

private static Document toXmlDocument(String xmlString) throws Exception {
InputSource xmlInputSource = new InputSource(new StringReader(xmlString));
DocumentBuilder xmlDocumentBuilder = DocumentBuilderFactory.newInstance().newDocumentBuilder();
return xmlDocumentBuilder.parse(xmlInputSource);
}
}
---------- END SOURCE ----------