ADDITIONAL SYSTEM INFORMATION :
Get the issue with Windows 11, JDK 21 and JDK 24.

A DESCRIPTION OF THE PROBLEM :
Unable to parse well-formed XML with escaped entities
With https://bugs.openjdk.org/browse/JDK-8343004 the jdk.xml.maxGeneralEntitySizeLimit was set from unlimited to 100000 in JDK 24. That's why the problem is exposed until now.
When parsing a well-formed XML with SAXParser and jdk.xml.maxGeneralEntitySizeLimit=2, the parser throws JAXP00010003, claiming entity "[xml]" has a size of "3" bytes, exceeding the "2" limit. The XML contains escaped entities (&, <, >), and no "[xml]" entity is defined, making the error message unclear. This may indicate a bug in SAXParser’s entity handling or error reporting under strict limits. My XML is:

<?xml version="1.0" encoding="UTF-8"?>
<root>
<Description>Depn prov - f &amp; f &lt; f &gt; f</Description>
</root>

When using JDK 24 with the default jdk.xml.maxGeneralEntitySizeLimit (100,000), I encounter an error parsing an XML containing escaped entities (e.g., &, <, >) if the entity content exceeds 100,000.
The same problem exists in JDK 21, but it is hidden because maxGeneralEntitySizeLimit=0 by default.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Run the Test Case code to reproduce the issue with JDK 21 and 24.


EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
It should run successfully with no error.
ACTUAL -
Get error:
[Fatal Error] :3:48: JAXP00010003: The length of entity "[xml]" is "3" that exceeds the "2" limit set by "jdk.xml.maxGeneralEntitySizeLimit".
Exception in thread "main" org.xml.sax.SAXParseException; lineNumber: 3; columnNumber: 48; JAXP00010003: The length of entity "[xml]" is "3" that exceeds the "2" limit set by "jdk.xml.maxGeneralEntitySizeLimit".
at java.xml/com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1252)
at java.xml/com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:643)
at com.bgu.lang.xml.SAXSimpleTest_SUN_14640.testSAXParse(SAXSimpleTest_SUN_14640.java:72)
at com.bgu.lang.xml.SAXSimpleTest_SUN_14640.main(SAXSimpleTest_SUN_14640.java:54)

---------- BEGIN SOURCE ----------
import java.io.StringReader;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;
import org.xml.sax.InputSource;
import org.xml.sax.XMLReader;
public class SAXSimpleTest_SUN_14640 {
public static void main(final String[] args) throws Exception {
System.setProperty("jdk.xml.maxGeneralEntitySizeLimit", "2");
// @formatter:off
xmlString = """
<?xml version="1.0" encoding="UTF-8"?>
<root>
<Description>Depn prov - f &amp; f &lt; f &gt; f</Description>
</root>
""";
// @formatter:on
testSAXParse(xmlString);
}

private static void testSAXParse(final String xmlString) throws Exception {
SAXParserFactory spf = SAXParserFactory.newInstance();
spf.setNamespaceAware(true);
SAXParser saxParser = spf.newSAXParser();
XMLReader reader = saxParser.getXMLReader();
reader.parse(new InputSource(new StringReader(xmlString)));
}
}
---------- END SOURCE ----------