import java.util.*; 

class Seven {
  public static void main(String[] args) {

    ConsoleReader console = new ConsoleReader(System.in); 
    String line; 
    
    do {

      System.out.print("Type> "); 
      line = console.readLine();
      
      StringTokenizer st = new StringTokenizer(line); 

      while (st.hasMoreTokens()) {
        String token = st.nextToken(); 
        System.out.println(" ***(" + token + ")*** "); 
      }

      String rev = ""; 

      for (int i = line.length() - 1; i >= 0; i--) {
         rev = rev + line.charAt(i);      
      } 

      System.out.println(rev); 

      System.out.println(line); 

    } while (! line.equals("bye")); 
    
  }
}

• brown code was added last (staples)
• blue code had been added before (esrever)
• the rest was there to start with (echo)

Next, let's work out some problems.

Problem 1 Write a program stenographer that accepts lines of text from the user and translates them (one by one) in shorthand. For the purposes of this exercise let's define shorthand notation as the one in which all vowels are removed from all the words everywhere.

Thus shorthand version of

Good evening, and welcome to Minneapolis!

Gd vnng, nd wlcm t Mnnpls!

Solution

Write a program stenographer

class Stenographer {
    public static void main(String[] args) {

    } 
}

class Stenographer {
    public static void main(String[] args) {
        ConsoleReader c = new ConsoleReader(System.in); 
        System.out.print("Please type a line of text: "); 
        String line = c.readLine(); 

    } 
}

class Stenographer {
    public static void main(String[] args) {
        ConsoleReader c = new ConsoleReader(System.in); 
        System.out.print("Please type a line of text: "); 
        String line = c.readLine(); 
        for (int i = 0; i < line.length(); i++) {
            String temp = line.substring(i, i+1); 
            System.out.print(temp); 
        }
        System.out.println(); 
    } 
} 

class Stenographer {
    public static void main(String[] args) {
        ConsoleReader c = new ConsoleReader(System.in); 
        System.out.print("Please type a line of text: "); 
        String line = c.readLine(); 
        for (int i = 0; i < line.length(); i++) {
            String temp = line.substring(i, i+1); 
            if (temp.equalsIgnoreCase("A") ||
                temp.equalsIgnoreCase("E") ||
                temp.equalsIgnoreCase("I") ||
                temp.equalsIgnoreCase("O") ||
                temp.equalsIgnoreCase("U")) {
                // skip that letter 
            } else {
                System.out.print(temp); 
            }
        }
        System.out.println(); 
    } 
} 

school.cs.indiana.edu%java Stenographer
Please type a line of text: Good evening, and welcome to Minneapolis!
Gd vnng, nd wlcm t Mnnpls!
school.cs.indiana.edu%java Stenographer
Please type a line of text: The Stenographer program works pretty well!
Th Stngrphr prgrm wrks prtty wll!
school.cs.indiana.edu%

Problem 2 Take a look at this problem, and become clear how it works, first.

Your lab assignment seven (below) is based on this and the previous question.

Your task is to write a program that simulates a vending machine that sells items which are worth 65 cents. Your program (called Vending) starts by greeting the user, then accepting coins. The machine accepts one coin at a time and understands the following coins:

• nickel
• dime and
• quarter

Example run:

prompt> java Vending
Welcome. Please enter coins:
coin> nickel
60 cents remaining
coin> quarter
35 cents remaining
coin> quarter
10 cents remaining
coin> quarter
Thank you. Your change is: 15 cents. 
Thanks for using this program. 

Here's a possible solution:

class Vending {
    public static void main(String[] args) {
        ConsoleReader console = new ConsoleReader(System.in); 
        System.out.println("Welcome. Please enter coins:"); 
        int amount = 0; 
        final int PRICE = 65; 
        while (amount < PRICE) {
            String coin; 
            System.out.print("coin> "); 
            coin = console.readLine(); 
            if (coin.equals("nickel")) {
                amount += 5; 
            } else if (coin.equals("dime")) {
                amount += 10; 
            } else if (coin.equals("quarter")) {
                amount += 25; 
            }
            if (amount < 65) {
                System.out.println((PRICE - amount) + " cents remaining."); 
            } else {
                System.out.println("Thank you. Your change is: " + 
                                   (amount - PRICE) + " cents."); 
            }
        }
        System.out.println("Thanks for using this program."); 
    }
}