Using the switch statement, write a menu driven program:

1. To check and display whether a number input by the user is a composite number or not.

1. A number is said to be composite, if it has one or more than one factors excluding 1 and the number itself.

1. Example: 4, 6, 8, 9…

1. To find the smallest digit of an integer that is input:

1. Sample input: 6524

1. Sample output: Smallest digit is 2

1. For an incorrect choice, an appropriate error message should be displayed.

public class wemakejavaeasy_solvedmenu

{

    public static void main(String args[]) {

        Scanner in = new Scanner(System.in);

        System.out.println("Type 1 for Composite Number");

        System.out.println("Type 2 for Smallest Digit");

        System.out.print("Enter your choice: ");

        int ch = in.nextInt();

        

        switch (ch) {

            case 1:

            System.out.print("Enter Number: ");

            int n = in.nextInt();

            int c = 0;

            for (int i = 1; i <= n; i++) {

                if (n % i == 0)

                    c++;

            }

            

            if (c > 2)

                System.out.println("Composite Number");

            else

                System.out.println("Not a Composite Number");

            break;

            

            case 2:

            System.out.print("Enter Number: ");

            int num = in.nextInt();

            int s = 10;

            while (num != 0) {

                int d = num % 10;

                if (d < s)

                    s = d;

                num /= 10;

            }

            System.out.println("Smallest digit is " + s);

            break;

            

            default:

            System.out.println("Wrong choice");

        }

    }

}

FOR COMPILATION VISIT HERE