1 Write a java program that use the factorial recursive method to (a) Accept factorial number from keyboard. (b) Validate the input. Reject the...

1

Write a java program that use the factorial recursive method to

(a) Accept factorial number from keyboard.

(b) Validate the input. Reject the invalid input until the input is accepted. (Reject input if it is character or string)

(c) Use recursive call to calculate the factorial value.

(d) Print the result

Accept the next number until terminated by user. (enter 0)

  Write a class object to do the factorial calculation instead of method in   

the main program.

CheckLeapYear.javaimport java.util.Scanner;public class CheckLeapYear { public static void main(String args) { /* * Declaring and initializing a variable */ int year=0; /* * Scanner object is...