hello,
my client is a Applet
in my Web Service i try to implement Observer Interface to watch any change
in my Object Store
the moment i call function "notifyObservers()" in Class which extends
Observable,
it has to call the "update(java.util.Observable aObservable, Object
aObject)" function in Web Service
but, it raises the following exception in Applet:
Any comments? suggestions?
VINK
java.lang.NullPointerException
at
org.apache.axis.message.SOAPFaultBuilder.endElement(SOAPFaultBuilder.java:13
4)
at
org.apache.axis.encoding.DeserializationContext.endElement(DeserializationCo
ntext.java:671)
at org.apache.crimson.parser.Parser2.maybeElement(Parser2.java:1489)
at org.apache.crimson.parser.Parser2.content(Parser2.java:1700)
at org.apache.crimson.parser.Parser2.maybeElement(Parser2.java:1468)
at org.apache.crimson.parser.Parser2.content(Parser2.java:1700)
at org.apache.crimson.parser.Parser2.maybeElement(Parser2.java:1468)
at org.apache.crimson.parser.Parser2.parseInternal(Parser2.java:499)
at org.apache.crimson.parser.Parser2.parse(Parser2.java:304)
at
org.apache.crimson.parser.XMLReaderImpl.parse(XMLReaderImpl.java:433)
at javax.xml.parsers.SAXParser.parse(SAXParser.java:346)
at
org.apache.axis.encoding.DeserializationContext.parse(DeserializationContext
.java:204)
at org.apache.axis.SOAPPart.getAsSOAPEnvelope(SOAPPart.java:378)
at org.apache.axis.client.Call.invoke(Call.java:1268)
at org.apache.axis.client.Call.invoke(Call.java:1113)
at org.apache.axis.client.Call.invoke(Call.java:1043)
at org.apache.axis.client.Call.invoke(Call.java:676)
at GenericApplet.SendCommand(GenericApplet.java:275)
at GenericApplet.actionPerformed(GenericApplet.java:194)
at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
at
javax.swing.AbstractButton$ForwardActionEvents.actionPerformed(Unknown
Source)
at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown
Source)
at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown
Source)
at java.awt.AWTEventMulticaster.mouseReleased(Unknown Source)
at java.awt.Component.processMouseEvent(Unknown Source)
at java.awt.Component.processEvent(Unknown Source)
at java.awt.Container.processEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(Unknown
Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown
Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
