исключение при создании XML-файла

Я пытаюсь создать файл XML. При создании файла я получаю эту ошибку. Я действительно не знаю, что это такое. Это действительно странная ошибка. Файл создан правильно, но внутри него ничего не написано.

Exception in thread "AWT-EventQueue-0" java.lang.AbstractMethodError: gnu.xml.dom.DomDocument.getXmlStandalone()Z
    at com.sun.org.apache.xalan.internal.xsltc.trax.DOM2TO.setDocumentInfo(DOM2TO.java:377)
    at com.sun.org.apache.xalan.internal.xsltc.trax.DOM2TO.parse(DOM2TO.java:131)
    at com.sun.org.apache.xalan.internal.xsltc.trax.DOM2TO.parse(DOM2TO.java:98)
    at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transformIdentity(TransformerImpl.java:683)
    at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(TransformerImpl.java:727)
    at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(TransformerImpl.java:340)
    at org.w3c.jigmonitor.controller.Controller.writePerformancesXmlFile(Controller.java:191)
    at org.w3c.jigmonitor.controller.Controller.actionPerformed(Controller.java:68)
    at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2018)
    at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2341)
    at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
    at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
    at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)
    at java.awt.Component.processMouseEvent(Component.java:6505)
    at javax.swing.JComponent.processMouseEvent(JComponent.java:3321)
    at java.awt.Component.processEvent(Component.java:6270)
    at java.awt.Container.processEvent(Container.java:2229)
    at java.awt.Component.dispatchEventImpl(Component.java:4861)
    at java.awt.Container.dispatchEventImpl(Container.java:2287)
    at java.awt.Component.dispatchEvent(Component.java:4687)
    at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4832)
    at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4492)
    at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4422)
    at java.awt.Container.dispatchEventImpl(Container.java:2273)
    at java.awt.Window.dispatchEventImpl(Window.java:2719)
    at java.awt.Component.dispatchEvent(Component.java:4687)
    at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:703)
    at java.awt.EventQueue.access$000(EventQueue.java:102)
    at java.awt.EventQueue$3.run(EventQueue.java:662)
    at java.awt.EventQueue$3.run(EventQueue.java:660)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
    at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)
    at java.awt.EventQueue$4.run(EventQueue.java:676)
    at java.awt.EventQueue$4.run(EventQueue.java:674)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:673)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:244)
    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:163)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:151)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:147)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:139)
    at java.awt.EventDispatchThread.run(EventDispatchThread.java:97)

это код, который я использую для создания XML-файла:

DocumentBuilderFactory docFactory = DocumentBuilderFactory.newInstance();
                    DocumentBuilder docBuilder = docFactory.newDocumentBuilder();

                    Document doc = docBuilder.newDocument();
                    Element rootElement = doc.createElement("performances");
                    doc.appendChild(rootElement);

                    Attr attr = doc.createAttribute("date");
                    attr.setValue(dateFormat.format(cal.getTime()).toString());
                    rootElement.setAttributeNode(attr);

                    //Uptime
                    Element uptime = doc.createElement("uptime");
                    rootElement.appendChild(uptime);

                    Element days = doc.createElement("days");
                    days.appendChild(doc.createTextNode(new Long(duptime).toString()));
                    uptime.appendChild(days);

                    Element hours = doc.createElement("hours");
                    hours.appendChild(doc.createTextNode(new Long(huptime).toString()));
                    uptime.appendChild(hours);

                    Element minutes = doc.createElement("minutes");
                    minutes.appendChild(doc.createTextNode(new Long(muptime).toString()));
                    uptime.appendChild(minutes);

                    Element seconds = doc.createElement("seconds");
                    seconds.appendChild(doc.createTextNode(new Long(suptime).toString()));
                    uptime.appendChild(seconds);

                    //TotalHitCount
                    Element totalhitcount = doc.createElement("totalhitcount");
                    totalhitcount.appendChild(doc.createTextNode(new Long(stats.gettotal_hit_count()).toString()));
                    rootElement.appendChild(totalhitcount);

                    //EmittedBytes
                    Element emittedbytes = doc.createElement("emittedbytes");
                    emittedbytes.appendChild(doc.createTextNode(new Long(stats.getemitted_bytes()).toString()));
                    rootElement.appendChild(emittedbytes);

                    //Avghitsec
                    Element avghitsec = doc.createElement("avghitsec");
                    avghitsec.appendChild(doc.createTextNode(new Float(stats.getavg_hit_sec()).toString()));
                    rootElement.appendChild(avghitsec);

                    //Avgbyteshit
                    Element avgbyteshit = doc.createElement("avgbyteshit");
                    avgbyteshit.appendChild(doc.createTextNode(new Long(stats.getavgbytes_hit()).toString()));
                    rootElement.appendChild(avgbyteshit);

                    //Avgbps
                    Element avgbps = doc.createElement("avgbps");
                    avgbps.appendChild(doc.createTextNode(new Long(stats.getavgbps()).toString()));
                    rootElement.appendChild(avgbps);

                    //Total Threads
                    Element totalthreads = doc.createElement("totalthreads");
                    totalthreads.appendChild(doc.createTextNode(new Long(stats.gettotal_threads()).toString()));
                    rootElement.appendChild(totalthreads);

                    //Idle Threads
                    Element idlethreads = doc.createElement("idlethreads");
                    idlethreads.appendChild(doc.createTextNode(new Long(stats.getidle_threads()).toString()));
                    rootElement.appendChild(idlethreads);

                    TransformerFactory transformerFactory = TransformerFactory.newInstance();
                    Transformer transfomer = transformerFactory.newTransformer();
                    DOMSource source = new DOMSource(doc);
                    StreamResult result = new StreamResult(new File("/home/mazzy/Scrivania/perfor_"+dateFormat.format(cal.getTime()).toString()+".xml"));

                    transfomer.transform(source, result);

Я получил это исключение в transfomer method.any идея, что я получил эту ошибку?

Ответы на вопрос(2)

public class AbstractMethodError extends IncompatibleClassChangeError

Thrown when an application tries to call an abstract method. Normally, this error is caught by the compiler; this error can only occur at run time if the definition of some class has incompatibly changed since the currently executing method was last compiled.

Похоже, вы могли пропустить jar реализации

Решение Вопроса

Это какая-то проблема конфигурации, вызванная наличием различных JAR-файлов в вашем пути к классам, когда вы компилировали свой код из тех, которые находятся в вашем пути к классам, когда вы его запускаете.

Ваш ответ на вопрос