I have been working on a java program all day and I am not sure why my program is throwing the errors on the equations.

I have been working on a java program all day and I am not sure why my program is throwing the errors on the equations. I need some help - it would also be nice to at least know im on the right track.

I cannot upload the documents onto this question platform as its "not supported' but I would be happy to send them over another way. There are 2 java flies and 2 jsp files and the assignment instructions.