Question

In java, (include javadoc comments for each method, please use ArrayList, not Array, and ensure that the program compiles).

design a class named Contact that has fields for a person’s name, phone number and email address. The class should have a no-arg constructor and a constructor that takes in all fields, appropriate setter and getter methods.

Then, write a program that creates at least five Contact objects and stores them in an ArrayList. In the program create a method, that will display each object in the ArrayList. Call the method to demonstrate that it works.

Answer 1

import java.util.*;

class Person { //person class
private String PersonName; //string variable for name
private String PhoneNumber; //string variable for number
private String email; //string variable for email
public Person(){ //constructor
  
}
public Person(String a,String b,String c) { //parameterised constructor
this.PersonName = a;
this.PhoneNumber = b;
this.email = c;
}

public String getPersonname() { //getter
return PersonName;
}
public void setPersonname(String a) { //setter
   this.PersonName = a;
}
public String getPhoneNumber() { //getter
return PhoneNumber;
}
public void setPhoneNumber(String a) { //setter
   this.PhoneNumber = a;
}
public String getemail() { //getter
return email;
}
public void setemail(String a) { //setter
   this.email = a;
}
}
public class Main{
public static void main(String args[]){
String a="",b="",c=""; //variable to get user input
Scanner sc=new Scanner(System.in);
ArrayList<Person> p=new ArrayList<Person>(); //list of person
for(int i=0;i<5;i++){
System.out.println("Enter the Person Name: "); //getting details
a=sc.nextLine();
System.out.println("Enter the Person Phone Number: "); //getting details
b=sc.nextLine();
System.out.println("Enter the Person Email: "); //getting details
c=sc.nextLine();
p.add(new Person(a,b,c)); //adding object to list
}
for(int i=0;i<p.size();i++){ //printinng the objects list
System.out.println("Person Name: "+p.get(i).getPersonname()+"Person Phone Number: "+p.get(i).getPhoneNumber()+"Person Email: "+p.get(i).getemail());
}
}
}

Input:

Output:

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