when i created the jar file (epublib-tools,viewer mainclasss)using eclipse default build,can read the epub files but failed show the table of contents.errors shown below please help me

[januprasad]

Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException: in is null at java.util.zip.ZipInputStream.(Unknown Source) at java.util.zip.ZipInputStream.(Unknown Source) at nl.siegmann.epublib.epub.EpubReader.readEpub(EpubReader.java:59) at nl.siegmann.epublib.epub.EpubReader.readEpub(EpubReader.java:39) at nl.siegmann.epublib.viewer.Viewer.(Viewer.java:57) at nl.siegmann.epublib.viewer.Viewer$9.run(Viewer.java:338) at java.awt.event.InvocationEvent.dispatch(Unknown Source) at java.awt.EventQueue.dispatchEventImpl(Unknown Source) at java.awt.EventQueue.access$200(Unknown Source) at java.awt.EventQueue$3.run(Unknown Source) at java.awt.EventQueue$3.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source) at java.awt.EventQueue.dispatchEvent(Unknown Source) at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source) at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source) at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source) at java.awt.EventDispatchThread.pumpEvents(Unknown Source) at java.awt.EventDispatchThread.pumpEvents(Unknown Source) at java.awt.EventDispatchThread.run(Unknown Source) 12484 [AWT-EventQueue-0] ERROR nl.siegmann.epublib.epub.PackageDocumentReader - Cover resource cover not found 12500 [AWT-EventQueue-0] ERROR nl.siegmann.epublib.epub.NCXDocument - remote resource is not cached : [http://www.daisy.org/z3986/2005/ncx-2005-1.dtd] cannot continue java.lang.RuntimeException: remote resource is not cached : [http://www.daisy.org/z3986/2005/ncx-2005-1.dtd] cannot continue at nl.siegmann.epublib.epub.EpubProcessorSupport$EntityResolverImpl.resolveEntity(EpubProcessorSupport.java:57) at com.sun.org.apache.xerces.internal.util.EntityResolverWrapper.resolveEntity(Unknown Source) at com.sun.org.apache.xerces.internal.impl.XMLEntityManager.resolveEntityAsPerStax(Unknown Source) at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$DTDDriver.dispatch(Unknown Source) at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$DTDDriver.next(Unknown Source) at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$PrologDriver.next(Unknown Source) at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(Unknown Source) at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(Unknown Source) at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source) at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source) at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source) at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(Unknown Source) at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(Unknown Source) at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(Unknown Source) at nl.siegmann.epublib.util.ResourceUtil.getAsDocument(ResourceUtil.java:123) at nl.siegmann.epublib.util.ResourceUtil.getAsDocument(ResourceUtil.java:103) at nl.siegmann.epublib.epub.NCXDocument.read(NCXDocument.java:90) at nl.siegmann.epublib.epub.EpubReader.processNcxResource(EpubReader.java:126) at nl.siegmann.epublib.epub.EpubReader.readEpubResources(EpubReader.java:112) at nl.siegmann.epublib.epub.EpubReader.readEpub(EpubReader.java:99) at nl.siegmann.epublib.epub.EpubReader.readEpub(EpubReader.java:59) at nl.siegmann.epublib.epub.EpubReader.readEpub(EpubReader.java:39) at nl.siegmann.epublib.viewer.Viewer$1.actionPerformed(Viewer.java:161) at javax.swing.AbstractButton.fireActionPerformed(Unknown Source) at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source) at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source) at javax.swing.DefaultButtonModel.setPressed(Unknown Source) at javax.swing.AbstractButton.doClick(Unknown Source) at javax.swing.plaf.basic.BasicMenuItemUI.doClick(Unknown Source) at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(Unknown Source) at java.awt.Component.processMouseEvent(Unknown Source) at javax.swing.JComponent.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.Window.dispatchEventImpl(Unknown Source) at java.awt.Component.dispatchEvent(Unknown Source) at java.awt.EventQueue.dispatchEventImpl(Unknown Source) at java.awt.EventQueue.access$200(Unknown Source) at java.awt.EventQueue$3.run(Unknown Source) at java.awt.EventQueue$3.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source) at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source) at java.awt.EventQueue$4.run(Unknown Source) at java.awt.EventQueue$4.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source) at java.awt.EventQueue.dispatchEvent(Unknown Source) at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source) at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source) at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source) at java.awt.EventDispatchThread.pumpEvents(Unknown Source) at java.awt.EventDispatchThread.pumpEvents(Unknown Source) at java.awt.EventDispatchThread.run(Unknown Source)