The Simple Interest (SI) and Compound Interest (CI) of a sum (P) for a given time (T) and rate (R) can be calculated as:

(a) SI = (p * r * t) / 100

(b) CI = P * ((1 + (R / 100))^T - 1)

Write a program to input sum, rate, time and type of Interest ('S' for Simple Interest and 'C' for Compound Interest). Calculate and display the sum and the interest earned.

import java.util.Scanner;

public class KboatInterest
{
    public static void main(String args[]) {
        Scanner in = new Scanner(System.in);
        System.out.print("Enter the sum: ");
        double p = in.nextDouble();
        System.out.print("Enter rate: ");
        double r = in.nextDouble();
        System.out.print("Enter time: ");
        int t = in.nextInt();
        System.out.println("Enter type of Interest");
        System.out.print("('S'- Simple Interest 'C'- Compound Interest): ");
        char type = in.next().charAt(0);
        boolean isTypeValid = true;

        double interest = 0.0;

        switch (type) {
            case 'S':
            interest = p * r * t / 100;
            break;

            case 'C':
            interest = p * (Math.pow((1 + (r / 100)), t) - 1);
            break;

            default:
            isTypeValid = false;
            System.out.println("Incorrect Interest type");
            break;
        }

        if (isTypeValid) {
            double amt = p + interest;
            System.out.println("Sum = " + p);
            System.out.println("Interest = " + interest);
            System.out.println("Sum + Interest = " + amt);
        }
    }
}