Description of problem:
I'd like to use tools from 
http://multivalent.sourceforge.net/
but if I try to execute (I only tried it on) Validate, I get this error

Exception in thread "main"
java.lang.ExceptionInInitializerError
   at java.lang.Class.initializeClass()
(/usr/lib/libgcj.so.6.0.0)
   at tool.pdf.Validate.main(java.lang.String[])
(Unknown Source)
   at gnu.java.lang.MainThread.call_main()
(/usr/lib/libgcj.so.6.0.0)
   at gnu.java.lang.MainThread.run()
(/usr/lib/libgcj.so.6.0.0)
Caused by: java.util.regex.PatternSyntaxException: At
position 1 in regular expression pattern:
quantifier (?*+{}) without preceding token
        (?i)\.pdf$
         ^
   at java.util.regex.Pattern.Pattern(java.lang.String,
int) (/usr/lib/libgcj.so.6.0.0)
   at java.util.regex.Pattern.compile(java.lang.String,
int) (/usr/lib/libgcj.so.6.0.0)
   at java.util.regex.Pattern.compile(java.lang.String)
(/usr/lib/libgcj.so.6.0.0)
   at
phelps.io.FileFilterPattern.FileFilterPattern(java.lang.String)
(Unknown Source)
   at multivalent.std.adaptor.pdf.COS.<clinit>()
(Unknown Source)
   at java.lang.Class.initializeClass()
(/usr/lib/libgcj.so.6.0.0)
   ...3 more
Version-Release number of selected component (if applicable):


How reproducible:
always

Steps to Reproduce:
1. try to use it on some file
2.
3.
  
Actual results:
exception raised

Expected results:
should work without exceptions

Additional info:
I contacted the developer of multivalent tool firstly and he wrote, it could be
a gcj issue