05. Account Balance

package com.company;

import java.util.Scanner;

public class P05BankAccount {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);

        String textOrNumber = input.nextLine();
        double sum = 0;

        while (!textOrNumber.equals("NoMoreMoney")) {
            double amount = Double.parseDouble(textOrNumber);
            if (amount < 0) {
                System.out.println("Invalid operation!");
                break;
            }
            sum += amount;
            System.out.printf("Increase: %.2f%n", amount);
            textOrNumber = input.nextLine();
        }
        System.out.printf("Total: %.2f%n", sum);
    }
}