exception creating xml file

Question

I'm trying to create an xml file.when I create the file I obtain this error. I don't really know what it is.it is a really strange error.the file is created correctly but nothing is written inside it.

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)

this is the code I use to create xml file:

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);

I got that exception in transfomer method.any idea what I got this error?

Michael Kay · Accepted Answer · 2012-07-12 09:50:34Z

2

It's some kind of configuration problem caused by having different JARs on your classpath when you compiled your code from those on your classpath when you run it.

answered Jul 12, 2012 at 9:50

Michael Kay

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MadProgrammer · Accepted Answer · 2012-07-12 09:23:12Z

1

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.

Sounds like you might've missing a implementation jar

answered Jul 12, 2012 at 9:23

MadProgrammer

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