Chapter 2 Exercise 5, Introduction to Java Programming, Tenth Edition Y. Daniel LiangY.

(Financial application: calculate tips) Write a program that reads the subtotal and the gratuity rate, then computes the gratuity and total. For example, if the user enters 10 for subtotal and 15% for gratuity rate, the program displays $1.5 as gratuity and $11.5 as total.

import java.util.Scanner;
public class Exersice_05 {

    public static void main(String[] Strings) {

        double gratuityRate,
                gratuityTotal,
                total,
                subtotal;

        Scanner input = new Scanner(System.in);

        System.out.print("Please enter the subtotal and gratuity rate: ");
        subtotal = input.nextDouble();
        gratuityRate = input.nextDouble();

        gratuityTotal = subtotal * gratuityRate * .01;
        total = subtotal + gratuityTotal;

        System.out.print("The gratuity is $" + gratuityTotal + " and total is $" + total);

    }
}