Question

Have you ever noticed the bar code printed on envelopes? That code helps the USPS process the mail. The barcode is generated as specified below.

In this assignment you are to write a JAVA program that will accept a 5 digit number from the user and then prints the appropriate symbols to the screen. Name your file ZipCode_yourInitials.java. The specifications for the code are PostalCodeAsignment.pdf. Using a do while loop allow the user to continue entering numbers as long as they want. Using a do while loop trap the user (ask them to reenter the zip code) if the zipcode entered is < 0 or > 99999.

Save yourself some time on this assignment. Think about it and do some planning before you start to write your code. You should consider:

• What will be the overall process of your program
• What methods are needed
• What will the methods do, what arguments will they need passed, what will they return (if anything)
• What variables are needed
• In what order should methods be called
• What will be the input to your program
• What will be the output from your program

Here is an example of input and output.

Please enter a 5 digit number, 00000 - 99999
11111
The postal code is:
|:::||:::||:::||:::||:::||:|:|:|
Would you like to enter another zip code, enter Y or N.
Y
Please enter a 5 digit number, 00000 - 99999
00000
The postal code is:
|||:::||:::||:::||:::||:::||:::|
Would you like to enter another zip code, enter Y or N.
Y
Please enter a 5 digit number, 00000 - 99999
02302
The postal code is:
|||:::::|:|::||;||:::::|:|::||;|
Would you like to enter another zip code, enter Y or N.
Y
Please enter a 5 digit number, 00000 - 99999
11111111
Please enter a 5 digit number, 00000 - 99999
90210
The postal code is:
||:|::||:::::|:|:::||||:::|::|:|
Would you like to enter another zip code, enter Y or N.
k
Would you like to enter another zip code, enter Y or N.
Y
Please enter a 5 digit number, 00000 - 99999
12345
The postal code is:
|:::||::|:|::||;:|::|:|:|::|:|:|
Would you like to enter another zip code, enter Y or N.
N

PDF

Answer 1

Hello, I have answered this question many times before. Here is the completed code for this problem. Comments are included, go through it, learn how things work and let me know if you have any doubts. Thanks

// ZipCode.java

import java.util.Scanner;

public class ZipCode {

      // constants to represent characters for full bar and half bar

      public static final char FB = '|', HB = ':';

      // an array of Strings to represent the barcodes of digits from 0 to 9

      // (based on the given table)

      private static String[] barcode = { "" + FB + FB + HB + HB + HB,

                  "" + HB + HB + HB + FB + FB, "" + HB + HB + FB + HB + FB,

                  "" + HB + HB + FB + FB + HB, "" + HB + FB + HB + HB + FB,

                  "" + HB + FB + HB + FB + HB, "" + HB + FB + FB + HB + HB,

                  "" + FB + HB + HB + HB + FB, "" + FB + HB + HB + FB + HB,

                  "" + FB + HB + FB + HB + HB };

      /**

      * method to print the bar code of a zipcode

      *

      * @param zipCode

      *            - zip code in String format

      */

      public static void printBarCode(String zipCode) {

            // printing start full frame bar

            System.out.print(FB);

            int sum = 0; // to store the sum of digits

            // looping through all digits in the zipcode

            for (int i = 0; i < zipCode.length(); i++) {

                  // parsing the digit at index i

                  int digit = Integer.parseInt("" + zipCode.charAt(i));

                  // adding to total

                  sum += digit;

                  // printing barcode of digit

                  printDigit(digit);

            }

            // finding remainder of sum when divided by 10

            int remainder = sum % 10;

            if (remainder == 0) {

                  // check digit is 0

                  printDigit(0);

            } else {

                  // check digit is 10-remainder

                  printDigit(10 - remainder);

            }

            // printing stop full frame bar

            System.out.print(FB + "\n");

      }

      /**

      * method to print the bar code of a digit between 0 and 9

      */

      public static void printDigit(int d) {

            if (d >= 0 && d <= 9) {

                  System.out.print(barcode[d]);

            }

      }

      public static void main(String[] args) {

            // scanner to read user input

            Scanner sc = new Scanner(System.in);

            String choice = "y";

            // looping

            do {

                  // prompting user for a 5 digit number

                  System.out

                              .println("Please enter a 5 digit number, 00000 - 99999: ");

                  // getting zip code as String

                  String zip = sc.nextLine();

                  // validating length

                  if (zip.length() == 5) {

                        try {

                              // making sure user entered a valid 5 digit number

                              Integer.parseInt(zip);

                              // if the control reach this line, it means that the zip

                              // code is parsable to integer without causing an

                              // exceptions.

                              System.out.println("The postal code is:");

                              // displaying bar code

                              printBarCode(zip);

                              // asking user if he wants to continue

                              System.out

                                          .println("Would you like to enter another zip code, enter Y or N.");

                              choice = sc.nextLine();

                        } catch (Exception e) {

                              // exception occurred due to non numeric input, just

                              // ignoring.

                        }

                  }

            } while (choice.equalsIgnoreCase("y"));

      }

}

/*OUTPUT*/

Please enter a 5 digit number, 00000 - 99999:

11111

The postal code is:

|:::||:::||:::||:::||:::||:|:|:|

Would you like to enter another zip code, enter Y or N.

y

Please enter a 5 digit number, 00000 - 99999:

00000

The postal code is:

|||:::||:::||:::||:::||:::||:::|

Would you like to enter another zip code, enter Y or N.

y

Please enter a 5 digit number, 00000 - 99999:

02302

The postal code is:

|||:::::|:|::||:||:::::|:|::||:|

Would you like to enter another zip code, enter Y or N.

y

Please enter a 5 digit number, 00000 - 99999:

11111111

Please enter a 5 digit number, 00000 - 99999:

10101

The postal code is:

|:::||||::::::||||::::::|||:::||

Would you like to enter another zip code, enter Y or N.

N