[Slackbuilds-users] BUG: pdftk decrypt doesn't work

[B Watson]

> Error: Unexpected Exception in open_reader()
> Unhandled Java Exception in main():
> java.lang.NullPointerException
>    at gnu.gcj.runtime.NameFinder.lookup(libgcj.so.16)
>    at java.lang.Throwable.getStackTrace(libgcj.so.16)
>    at java.lang.Throwable.stackTraceString(libgcj.so.16)
>    at java.lang.Throwable.printStackTrace(libgcj.so.16)
>    at java.lang.Throwable.printStackTrace(libgcj.so.16)

I ran across a similar situation with java code that uses crypto. When
built with gcj, crypto wasn't supported. When built with openjdk or
oracle jdk, it worked fine.

Worth trying, at least.