In Java language write a main method that calls each of these three methods. (a) public static String reverse(String name) reverse may assume without checking that the arg (e.g. "John Smith") is a first name consisting of >=1 letters and no non-letters,followed by a single space, followed by a last name consisting of >=1 letters and non-letters reverse's job is to return the last- name-first version of the name: the last name, followed by a comma, followed by a single space, followed by the first name (b) public static int howMany (String little,String big); howMany's job is to return how many times the string little appears in the string big. howMany may assume without checking that neither arg is the empty string, and that the occurrences of little in big don't overlap each other (case sensitive) . For example, howMany("na", "banananaNA") returns 3 (c) public static String noSpace(String s); noSpace's job is to return a String that is just like the arg, except with the spaces removed. For example, noSpace("How now brown cow")returns" Hownowbrowncow".