This question is answered on the website but, the answer is not was it was asked

Question

This question is answered on the website but, the answer is not was it was asked. It must contain 2 files and phone book enterys must be saved in seperate .txt file.

Write a class named PhoneBookEntry that has fields for a person’s name and phone number. The class should have a constructor and appropriate accessor and mutator methods. Then write a program that creates at least five PhoneBookEntry objects and stores them in an ArrayList. Use a loop to display the contents of each object in the ArrayList.

Explanation / Answer

Here is the working solution-

//Note -please change the output.txt file location in writeContactListOnFile(ArrayList<PhoneBookEntry> contactList) method accordingly before executing the program.

//PhoneBookEntry.java

public class PhoneBookEntry {
   private String name;
   private String phoneNumber;
  
  
   public PhoneBookEntry(String name, String phoneNumber) {
       super();
       this.name = name;
       this.phoneNumber = phoneNumber;
   }
   /**
   * @return the name
   */
   public String getName() {
       return name;
   }
   /**
   * @param name the name to set
   */
   public void setName(String name) {
       this.name = name;
   }
   /**
   * @return the phoneNumber
   */
   public String getPhoneNumber() {
       return phoneNumber;
   }
   /**
   * @param phoneNumber the phoneNumber to set
   */
   public void setPhoneNumber(String phoneNumber) {
       this.phoneNumber = phoneNumber;
   }
   /* (non-Javadoc)
   * @see java.lang.Object#toString()
   */
   @Override
   public String toString() {
       return "PhoneBookEntry [name=" + name + ", phoneNumber=" + phoneNumber + "]";
   }
  

}

//PhoneBookEntryTestClass.java

import java.io.BufferedWriter;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;

public class PhoneBookEntryTestClass {
  
   public static void main(String[] args) {
       ArrayList<PhoneBookEntry> contactList= new ArrayList<PhoneBookEntry>(); //creating array of PhoneBookEntry object
       PhoneBookEntry entry1=new PhoneBookEntry("Rahul", "1234567890");
       PhoneBookEntry entry2=new PhoneBookEntry("Keshav", "0987654321");
       PhoneBookEntry entry3=new PhoneBookEntry("Mahesh", "8907654321");
       PhoneBookEntry entry4=new PhoneBookEntry("Ajit", "5432167890");
       PhoneBookEntry entry5=new PhoneBookEntry("Sonu", "8907654321");
       contactList.add(entry1); //adding PhoneBookEntry object into arrayList one by one
       contactList.add(entry2);
       contactList.add(entry3);
       contactList.add(entry4);
       contactList.add(entry5);
//       displayContactList(contactList); //uncomment this method if you want to display the data on console
       writeContactListOnFile(contactList); //comment this method if you do not want to store the data on file

   }

   /**method to write the contact details to output.txt file
   *
   * @param contactList
   */
   private static void writeContactListOnFile(ArrayList<PhoneBookEntry> contactList) {
       try {
           FileWriter writer = new FileWriter("C:\src\main\java\output.txt");// output file location
           BufferedWriter bufferedWriter = new BufferedWriter(writer);

           for(PhoneBookEntry pbe:contactList){
               bufferedWriter.write("person name :"+pbe.getName()+" phone number :"+pbe.getPhoneNumber());
               bufferedWriter.write(" ");
           }
          
           bufferedWriter.close();
       } catch (IOException e) {
           e.printStackTrace();
       }

   }

   /**method to display the contact details over console
   *
   * @param contactList
   */
   private static void displayContactList(ArrayList<PhoneBookEntry> contactList) {
      
       //using for-each loop to display data
       for(PhoneBookEntry pbe:contactList){
           System.out.println("person name :"+pbe.getName()+" phone number :"+pbe.getPhoneNumber());
       }
      
   }

}

//sample output.txt

person name :Rahul phone number :1234567890
person name :Keshav phone number :0987654321
person name :Mahesh phone number :8907654321
person name :Ajit phone number :5432167890
person name :Sonu phone number :8907654321

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