Write a recursive method that finds the number of occurrences of a specified letter in a string using the following method header: public static int count(String str, char a) For example,...

Write a recursive method that
finds the number of occurrences of a specified letter in a string using the following
method header:

public static int count(String str, char a)

For example, count("Welcome", 'e') returns 2. Write a test program that
prompts the user to enter a string and a character, and displays the number of
occurrences for the character in the string.