Question

I need help with adding comments to my code and I need a uml diagram for it. PLs help....

Zipcodeproject.java

package zipcodesproject;
import java.util.Scanner;
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;

public class Zipcodesproject {

/**
* @param args the command line arguments
*/
public static void main(String[] args) {
Scanner input=new Scanner(System.in);
BufferedReader reader;
int code;
String state,town;
ziplist listOFCodes=new ziplist();
try
{
reader = new BufferedReader(new FileReader("C:UsersJayDesktopzipcodes.txt"));
String line = reader.readLine();
while (line != null)
{
code=Integer.parseInt(line);
line = reader.readLine();
town=line;
line = reader.readLine();
state=line;
line = reader.readLine();
listOFCodes.addTOList(new zipcodes(code,town,state));
}
reader.close();
   } catch (IOException e) {
e.printStackTrace();
}
while(true)
{
System.out.print("Enter zipcode to find or -1 to exit: ");
code=input.nextInt();
if(code==-1)
break;
else
{
listOFCodes.searchZipCode(code);
System.out.print(" ");
}
}
}
  
}
zipcodes.java

package zipcodesproject;

public class zipcodes {
private int zipcode;
private String town,state;

public zipcodes() {
}

public zipcodes(int zipcode, String town, String state) {
this.zipcode = zipcode;
this.town = town;
this.state = state;
}

public void setZipcode(int zipcode) {
this.zipcode = zipcode;
}

public void setTown(String town) {
this.town = town;
}

public void setState(String state) {
this.state = state;
}

public int getZipcode() {
return zipcode;
}

public String getTown() {
return town;
}

public String getState() {
return state;
}

@Override
public String toString() {
return "Zipcode=" + zipcode + ", Town=" + town + ", State=" + state ;
}

}
ziplist.java

package zipcodesproject;

import java.util.ArrayList;

public class ziplist {
private ArrayList<zipcodes>zipCodeList=new ArrayList<>();
  
public ziplist() {
}
void addTOList(zipcodes zipObject)
{
this.zipCodeList.add(zipObject);
}
void searchZipCode(int code)
{
for(int i=0;i<this.zipCodeList.size();i++)
{
if(zipCodeList.get(i).getZipcode()==code)
{
System.out.println(zipCodeList.get(i));
return;
}
}
System.out.println(" The zip code was not found.");
}
}
output

Answer 1

Here is the commented code with UML diagram for this problem. Let me know if you have any doubts or if you need anything to change. If you are satisfied with the solution, please rate the answer. Thanks

// Zipcodesproject.java

import java.util.Scanner;

import java.io.BufferedReader;

import java.io.FileReader;

import java.io.IOException;

public class Zipcodesproject {

              /**

              * @param args

              *            the command line arguments

              */

              public static void main(String[] args) {

                           // creating a scanner to read user input from keyboard

                           Scanner input = new Scanner(System.in);

                           // creating a BufferedReader to read input file

                           BufferedReader reader;

                           int code;

                           String state, town;

                           // creating an empty ziplist to store zip codes from file

                           ziplist listOFCodes = new ziplist();

                           // trying to open the file

                           try {

                                         reader = new BufferedReader(new FileReader(

                                                                     "C:\Users\Jay\Desktop\zipcodes.txt"));

                                         // reading a line

                                         String line = reader.readLine();

                                         // checking in loop if line has been read successfully

                                         while (line != null) {

                                                       // converting line to integer, using as zip code

                                                       code = Integer.parseInt(line);

                                                       // reading next line, using as town

                                                       line = reader.readLine();

                                                       town = line;

                                                       // reading next line, using as state

                                                       line = reader.readLine();

                                                       state = line;

                                                       // reading next line for the next loop

                                                       line = reader.readLine();

                                                       // creating a zipcodes object and adding to the ziplist object

                                                       listOFCodes.addTOList(new zipcodes(code, town, state));

                                         }

                                         //closing file reader

                                         reader.close();

                           } catch (IOException e) {

                                         //exception occurred, file not found

                                         e.printStackTrace();

                           }

                           //looping indefinitely

                           while (true) {

                                         //asking user for a zipcode

                                         System.out.print("Enter zipcode to find or -1 to exit: ");

                                         //getting zip code

                                         code = input.nextInt();

                                         //checking if zip code is sentinel value

                                         if (code == -1)

                                                       break; //end of loop

                                         else {

                                                       //searching zipcode and displaying results

                                                       listOFCodes.searchZipCode(code);

                                                       System.out.print(" ");

                                         }

                           }

              }

}

// zipcodes.java

//class to represent a zipcode

public class zipcodes {

              // variable for storing zipcode

              private int zipcode;

              // variable for storing town and state

              private String town, state;

              /**

              * default constructor doing nothing

              */

              public zipcodes() {

              }

              /**

              * parameterized constructor taking initial values for zipcode,town and

              * state

              *

              * @param zipcode

              *            integer zip code

              * @param town

              *            town name

              * @param state

              *            state name

              */

              public zipcodes(int zipcode, String town, String state) {

                           this.zipcode = zipcode;

                           this.town = town;

                           this.state = state;

              }

              /**

              * setter for zipcode

              *

              * @param zipcode

              *            new zip code

              */

              public void setZipcode(int zipcode) {

                           this.zipcode = zipcode;

              }

              /**

              * setter for town

              *

              * @param town

              *            new town name

              */

              public void setTown(String town) {

                           this.town = town;

              }

              /**

              * setter for state

              *

              * @param state

              *            new state name

              */

              public void setState(String state) {

                           this.state = state;

              }

              /**

              * returns the zipcode

              */

              public int getZipcode() {

                           return zipcode;

              }

              /**

              * returns the town name

              */

              public String getTown() {

                           return town;

              }

              /**

              * returns the state name

              */

              public String getState() {

                           return state;

              }

              /**

              * returns a string containing all info

              */

              @Override

              public String toString() {

                           return "Zipcode=" + zipcode + ", Town=" + town + ", State=" + state;

              }

}

// ziplist.java

import java.util.ArrayList;

/**

* class to represent a list of zip codes

*/

public class ziplist {

              //list to store all zipcodes

              private ArrayList<zipcodes> zipCodeList ;

              /**

              * default constructor

              */

              public ziplist() {

                           //initializing list

                           zipCodeList = new ArrayList<zipcodes>();

              }

             

              /**

              * method to add a zipcode to list

              */

              void addTOList(zipcodes zipObject) {

                           this.zipCodeList.add(zipObject);

              }

              /**

              * method to search for a zip code and displays it if found

              */

              void searchZipCode(int code) {

                           for (int i = 0; i < this.zipCodeList.size(); i++) {

                                         if (zipCodeList.get(i).getZipcode() == code) {

                                                       System.out.println(zipCodeList.get(i));

                                                       return;

                                         }

                           }

                           System.out.println(" The zip code was not found.");

              }

}

/*UML diagram*/