Reading strings

hi

i want to know whether we can take out the strings from an equation like this :

"epsilon(i,j,k)*Q(l,m,n)"

this is a string and i want to take out epsilon,Q,i,j,k,l,m,n into a separate strings. this equation is just an example but the number of epsilon and Q may vary and come in any order.

please help!!

thanx
balu.m

what programming language(s) are you using?

I'm using java language