Java recursion question

Write a recursive method called sumover that has one argument n, which is a non- negative integer. The method returns a double value, which is the sum of the reciprocals of the first n positive integers. (The reciprocal of x is e fraction 1/x.) For example, sumover(1) returns 1.0 (which is 1/1); sumover (2) returns 1. 5 (which is 1/1 + 1/2) and sumover(3) returns approximate- ly 1.833 (which is 1/1 1/2 1/3). Define sumover (0) to be zero. Do not use any local vari- ables in your method