SAXException with semicolon
<element>&amp</element>
<element>&</element>

org.xml.sax.SAXParseException: The reference to entity "amp" must end with the ';' delimiter.
at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(DOMParser.java:249)
at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(DocumentBuilderImpl.java:284)
at javax.xml.parsers.DocumentBuilder.parse(DocumentBuilder.java:208)

DocumentBuilderFactory.newInstance().newDocumentBuilder().parse(file);

import java.io.*;
import javax.xml.parsers.DocumentBuilderFactory;

public class Test {
    public static void main(String[] args) throws Exception {
        File file = new File("test.xml");
        DocumentBuilderFactory.newInstance()
            .newDocumentBuilder()
                .parse(file);
    }
}

<element>&</element>

<element>&amp</element>