avoda V50. (20) Complete the main() method in class CountCharacters that prompts the user to input a stru of characters and outputs (display in console) the number of characters in the string Assume all characters (letters, digits, symbols, white spaces) are counted. import java.util.Scanner: public class CountCharacters public static void main(String[] args) { /*Write your code here. */ 21) In class MyMath Functions, please provide a static method MiddleValue(that takes three tegers as parameters and returns the middle value of the three. For example, Middle Value(4.3. returns 4, Middle Value(5, 2, 5) returns 5. public class MyMath Functions Write your code here. /