Recursive Character Search and Destroy

I receive a string, and I want to remove any 'a', 'b' and 'c' characters, in a recursive way.

How do I do this in C and Java?

Thanks

def oneWordForcedIndentationOfCodeThreadOver(string):
    (oneWordForcedIndentationOfCodeThreadOver(string[1:]) if string[0] in "abc" else string[0]+oneWordForcedIndentationOfCodeThreadOver(string[1:])) if string else string