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via Coderanch by Migrated From Jforum.net, 1 year ago
This exception has no message.
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java.lang.NullPointerException: 	at java.util.TreeSet.addAll(TreeSet.java:245)	at org.springframework.roo.felix.pgp.PgpServiceImpl.trustDefaultKeys(PgpServiceImpl.java:96)	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:585)	at com.springsource.sts.roo.core.RooCoreActivator.invokeMethod(RooCoreActivator.java:88)	at com.springsource.sts.roo.core.RooCoreActivator.registerHttpPgpUrlHandler(RooCoreActivator.java:112)	at com.springsource.sts.roo.core.RooCoreActivator.access$0(RooCoreActivator.java:95)	at com.springsource.sts.roo.core.RooCoreActivator$1.run(RooCoreActivator.java:66)	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)