Java 2.0

package com.company.softuni;

import java.util.Scanner;

public class Main2 {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        String password = scanner.nextLine();
        String command = scanner.nextLine();

        while (!command.equals("Done")) {
            String[] tokens = command.split("\\s+");
            String commandName = tokens[0];

            switch (commandName) {
                case "TakeOdd":
                    // Takes only the characters at odd indices and concatenates them together to obtain the new raw password and then prints it.
                    StringBuilder newPass = new StringBuilder();
                    for (int i = 0; i < password.length(); i++) {
                        if (i % 2 == 1) {
                            newPass.append(password.charAt(i));
                        }
                    }
                    password = newPass.toString();
                    System.out.println(password);
                    break;

                case "Cut":
                    int index = Integer.parseInt(tokens[1]);
                    int length = Integer.parseInt(tokens[2]);

                    String substr = password.substring(index, index + length);
                    password = password.replace(substr, "");
                    System.out.println(password);
                    break;

                case "Substitute":
                    String symbol = tokens[1];
                    String replacement = tokens[2];

                    if (password.contains(symbol)) {
                        password = password.replace(symbol, replacement);
                        System.out.println(password);
                    } else {
                        System.out.println("Nothing to replace!");
                    }
                    break;
            }

            command = scanner.nextLine();
        }
        System.out.printf("Your password is: %s", password);
    }
}