Java fundamentals - Vending Machine

import java.util.Scanner;

public class vending3tiopit {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        String input = "";
        double totalSum = 0;

        while (true) {
            input = sc.nextLine();

            switch (input) {
                case "0.1":
                    totalSum += 0.1;
                    break;
                case "0.2":
                    totalSum += 0.2;
                    break;
                case "0.5":
                    totalSum += 0.5;
                    break;
                case "1":
                    totalSum += 1;
                    break;
                case "2":
                    totalSum += 2;
                    break;
                case "Start":
                    input = sc.nextLine();
                    while (!input.equals("End")) {

                        switch (input) {
                            //"Nuts", "Water", "Crisps", "Soda", "Coke"
                            //: 2.0,   0.7,      1.5,     0.8,     1.0
                            case "Soda":
                                if (totalSum < 0.8) {
                                    System.out.println("Sorry, not enough money");
                                    break;
                                }
                                totalSum -= 0.8;
                                System.out.println("Purchased Soda");
                                break;
                            case "Coke":
                                if (totalSum < 1) {
                                    System.out.println("Sorry, not enough money");
                                    break;
                                }
                                totalSum -= 1;
                                System.out.println("Purchased Coke");
                                break;
                            case "Nuts":
                                if (totalSum < 2) {
                                    System.out.println("Sorry, not enough money");
                                    break;
                                }
                                totalSum -= 2;
                                System.out.println("Purchased Nuts");
                                break;
                                case "Water":
                                if (totalSum < 0.7) {
                                    System.out.println("Sorry, not enough money");
                                    break;
                                }
                                totalSum -= 0.7;
                                    System.out.println("Purchased Water");
                                break;
                                case "Crisps":
                                if (totalSum < 1.5) {
                                    System.out.println("Sorry, not enough money");
                                    break;
                                }
                                totalSum -= 1.5;
                                    System.out.println("Purchased Crisps");
                                break;

                            default:
                                System.out.println("Invalid product");
                                break;

                        }
                        input = sc.nextLine();
                    }
                    System.out.printf("Change: %.2f", totalSum);
                    return;

                default:
                    double coins = Double.parseDouble(input);
                    System.out.printf("Cannot accept %.2f%n", coins);
                    break;


            }

        }
    }
}