OOP Program-14

(14) Write a program that creates an Array List and adds a Loan object, a Date object, a string, and a Circle object to the list, and use a loop to display all elements in the list by invoking the object’s to String() method.

Program Code:

 import java.util.ArrayList;

import java.util.Date;

public class OOP_14

{

 public static void main(String[] args) 

 {

  ArrayList<Object> arr_list = new ArrayList<Object>();

  arr_list.add(new Loan(5000.50));  

  arr_list.add(new Date());  

  arr_list.add(new String("String class")); 

  arr_list.add(new Circle(3.45)); 

  for (int i = 0; i < arr_list.size(); i++) 

  {

   System.out.println(" \n "+(arr_list.get(i)).toString());

  }

 }

}

class Circle

{

 double radius;

 Circle(double r)

 {

  this.radius=r;

 }

 public String toString()

 {

  return "Circle with Radius= "+this.radius;

 }

}

class Loan

{

 double amount;

 Loan(double amt)

 {

  this.amount=amt;

 }

 public String toString()

 {

  return "Loan with Amount= "+this.amount;

 }

}

Output: