[Simple-support] problems to deserialize an xml file

[Mouad El G. <mou...@gm...>]

I am trying the first time to deserialize an xml file to a given object with following codelines:

Serializer serializer = new Persister();
File source = new File(getPath() + getFileName());
UserConfiguration conf = decoder.read(UserConfiguration.class, source);

But i become following exception:
org.simpleframework.xml.core.InstantiationException: Type class java.beans.XMLDecoder is not compatible with class com.flowfact.client.app.configuration.UserConfiguration
	at org.simpleframework.xml.core.Factory.getOverride(Factory.java:106)
	at org.simpleframework.xml.core.ObjectFactory.getInstance(ObjectFactory.java:63)
	at org.simpleframework.xml.core.Composite.read(Composite.java:125)
	at org.simpleframework.xml.core.Traverser.read(Traverser.java:78)
	at org.simpleframework.xml.core.Persister.read(Persister.java:544)
	at org.simpleframework.xml.core.Persister.read(Persister.java:526)
	at org.simpleframework.xml.core.Persister.read(Persister.java:507)
	at org.simpleframework.xml.core.Persister.read(Persister.java:489)
	at org.simpleframework.xml.core.Persister.read(Persister.java:471)
	at org.simpleframework.xml.core.Persister.read(Persister.java:452)
	at org.simpleframework.xml.core.Persister.read(Persister.java:431)
	at com.flowfact.client.app.configuration.UserConfiguration.readXStream(UserConfiguration.java:232)
	at com.flowfact.util.configuration.Configuration.load(Configuration.java:121)
	at com.flowfact.client.app.FlowFactActivator.getUserConfiguration(FlowFactActivator.java:106)
	at com.flowfact.client.app.splashHandlers.InteractiveSplashHandler.requestTargetServerInformation(InteractiveSplashHandler.java:351)
	at com.flowfact.client.app.ApplicationWorkbenchAdvisor.preStartup(ApplicationWorkbenchAdvisor.java:59)
	at org.eclipse.ui.internal.Workbench$27.runWithException(Workbench.java:1359)
	at org.eclipse.ui.internal.StartupThreading$StartupRunnable.run(StartupThreading.java:31)
	at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
	at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:133)
	at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:3800)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3425)
	at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2293)
	at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2198)
	at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:493)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:288)
	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:488)
	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
	at com.flowfact.client.app.FlowFactApplication.start(FlowFactApplication.java:28)
	at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:193)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:382)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:549)
	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:504)
	at org.eclipse.equinox.launcher.Main.run(Main.java:1236)
	at org.eclipse.equinox.launcher.Main.main(Main.java:1212)

Does anybpdy know what is the reason? 

Thanks

Mouad

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