Question

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. Thenwrite a program that creates at least five PhoneBookEntry objects and stores them in anArrayLitt.

Use

a loop to display the contents of each object in the

ArrayList.

Answer 1

//Program:PhoneBookEntry .java

import java.util.ArrayList;
import java.util.Scanner;

class PhoneBookEntry
{
String PersonName;
String PhoneNumber;
public PhoneBookEntry(String Name, String Number)
{
PersonName=Name;
PhoneNumber=Number;
}
public void setPersonName(String Name)
{
PersonName=Name;
}
public void setPhoneNumber(String Name)
{
PersonName=Name;
}
public String getPersonName()
{
return PersonName;
}
public String getPhoneNumber()
{
return PhoneNumber;
}
public static void main(String[] args)
{
//creating 5 PhoneBookEntry objects to hold 5 entries
PhoneBookEntry Entry[]=new PhoneBookEntry[5];
//Creating a array list to hold PhoneBookEntry objects
ArrayList<PhoneBookEntry> L=new ArrayList <>();
//local variables
String Name, Number;
//Reading input from user or we can hard code
System.out.println("Creating 5 phone book entries");
for(int i=0;i<5;i++)
{
System.out.println("Enter Person "+(i+1)+" Name and phone number");
Scanner scan=new Scanner(System.in);// to get keyboard input
Name=scan.next(); // reading name
Number=scan.next();// reading phone number
//Creating Entry by calling constructor
Entry[i]=new PhoneBookEntry(Name, Number);
//Adding the entry to the arraylist
L.add(Entry[i]);
}
  
/* A loop to display the contents of each object in the ArrayList.*/
System.out.println("\nPhone Book Entries");
System.out.println("------------------------------------------");
System.out.println("Sno PersonName\tPhoneNumber");
System.out.println("------------------------------------------");
for(int i=0;i<5;i++)
{ /*Getting each entry obect from Arraylist and retrieving name and phone number */
System.out.println((i+1)+" "+L.get(i).getPersonName()+"\t"+L.get(i).getPhoneNumber());
}
}
}

//Output:

NetBeans IDE 8.0.2 File Edit View Navigate Source Refactor Run Debug Profile T <default config>v Output PhoneBookDemo (run)PhoneBookEnt Creating 5 phone book entries Enter Person 1 Name and phone number JhonSmith 9034567890 Enter Person 2 Name and phone number DavidTiat 9234562323 Enter Person 3 Name and phone number JulieRobert 9123409121 Enter Person 4 Name and phone number MarkAntony 9345678565 Enter Person 5 Name and phone number RobertVathora 9456313423 동! Phone Book Entries Sno PersonName PhoneNumber 1 JhonSmith 2 DavidTiat 3 JulieRobert 9123409121 4 MarkAntony 5 RobertVathora 9456313423 BUILD SUCCESSFUL (total time: 2 minutes 11 seconds) 9034567890 9234562323 9345678565