Hi,
LoadRunner version 11.51 or earlier does not support Java 7 (i.e. Java 1.7.x). Please review the following document:
http://support.openview.hp.com/selfsolve/document/KM1313058
Unfortunately LoadRunner 9.5 is not supported any more. The supported versions are LoadRunner 11.0x and 11.5x.
I think that your options are either upgrading or if possible to recombile the jar file using JDK1.6.
Kind regards,