Searched on Google with the first line of a JAVA stack trace?

We can recommend more relevant solutions and speed up debugging when you paste your entire stack trace with the exception message. Try a sample exception.

Recommended solutions based on your search

Solutions on the web

via sourceforge.net by Unknown author, 2 years ago
This exception has no message.
via sourceforge.net by Unknown author, 1 year ago
This exception has no message.
via Oracle Community by 879040, 1 year ago
via GitHub by vaadin-bot
, 1 year ago
via Stack Overflow by LinuxDisciple
, 1 year ago
via Stack Overflow by user2219234
, 2 years ago
java.lang.NullPointerException: 	at java.util.Hashtable.containsKey(Unknown Source)	at com.installshield.product.service.registry.LoggedSoftwareObject.addRequired(Unknown Source)	at com.installshield.product.service.registry.LoggedSoftwareObject.setRequired(Unknown Source)	at com.installshield.product.service.registry.VPDDef.loadSoftwareObject(Unknown Source)	at com.installshield.product.service.registry.VPDDef.getSoftwareObject(Unknown Source)	at com.installshield.product.service.registry.PureJavaRegistryServiceImpl.findSoftwareObject(Unknown Source)	at com.installshield.product.service.registry.PureJavaRegistryServiceImpl.findSoftwareObjects(Unknown Source)	at com.installshield.product.service.registry.PureJavaRegistryServiceImpl.getSoftwareObject(Unknown Source)	at sun.reflect.GeneratedMethodAccessor102.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)	at java.lang.reflect.Method.invoke(Unknown Source)	at com.installshield.wizard.service.LocalImplementorProxy.invoke(Unknown Source)	at com.installshield.wizard.service.AbstractService.invokeImpl(Unknown Source)	at com.installshield.product.service.registry.GenericRegistryService.getSoftwareObject(Unknown Source)	at com.installshield.product.service.product.InstallableObjectVisitor.visitSoftwareObject(Unknown Source)	at com.installshield.product.service.product.RequiredResourceIndices.visitSoftwareObject(Unknown Source)	at com.installshield.product.service.product.InstallableObjectVisitor.visitProductBean(Unknown Source)	at com.installshield.product.service.product.InstallableObjectVisitor.visitProductBeans(Unknown Source)	at com.installshield.product.service.product.RequiredResourceIndices.getRequiredResourceIndices(Unknown Source)	at com.installshield.product.service.product.PureJavaProductServiceImpl$InstallProduct.install(Unknown Source)	at com.installshield.product.service.product.PureJavaProductServiceImpl$Installer.execute(Unknown Source)	at com.installshield.wizard.service.AsynchronousOperation.run(Unknown Source)	at java.lang.Thread.run(Unknown Source)