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### 2015-12-21

posted Dec 21, 2015, 8:52 AM by Samuel Konstantinovich   [ updated Dec 21, 2015, 9:06 AM ]
 1. Run your LabGUI so I can see it.2. Work on your other stuff:Create an data type to represent Postal Bar Codes:A bar code is generated from a 5 digit zip code by representing each digit witha combination of 3 half bars and 2 full bars. Note that leading 0's are allowedfor zip codes. Represent a full bar with "|" and a half bar with ":".To represent each of the 10 digits uniquely, the codes use the following scheme:1  :::||   2  ::|:|3  ::||:4  :|::|5  :|:|:6  :||::7  |:::|8  |::|:9  |:|::0  ||:::   A check digit is added to the right of a zip code. The check digit is equalto the sum of the digits of the zip code modulo 10.For example,   if the zip code is : 08451   then the check digit is : 8   thus the zip + check digit is : 084518A bar code has a 2 guard rails (full bars) that lead and end the code.So the bar code of 084518 is: |||:::|::|::|::|:|:|::::|||::|:|      Implement the following constructors and methods.public class BarCode implements Comparable{// instance variables   private String _zip;   private int _checkDigit;// constructors//precondtion: zip.length() = 5 and zip contains only digits.//postcondition: throws a runtime exception zip is not the correct length//               or zip contains a non digit//               _zip and _checkDigit are initialized.public BarCode(String zip) {}// postcondition: Creates a copy of a bar code.public BarCode(BarCode x){}//post: computes and returns the check sum for _zipprivate int checkSum(){}//postcondition: format zip + check digit + barcode //ex. "084518  |||:::|::|::|::|:|:|::::|||::|:|"      public String toString(){}public boolean equals(Object other){}// postcondition: false if the object is not a BarCode, // false if it is a non-matching barcode// true when they match.public int compareTo(Comparable other){}// postcondition: compares the zip + checkdigit }