dhoskins97 / sprint-challenge--java-fundamentals-piggybank

Introduction

This sprint challenge combines the knowledge from this week's Java Fundamentals lessons in order to create a Magical Piggy Bank using Java and the JDK.

Instructions

We have a magical "piggy bank" (a piggy bank is the traditional name of a place to store coins, bills, money). The piggy bank is magical because it can hold unlimited amounts of money. However, you can not get the money out of it.

Create a collection (array, arraylist, or hashmap) to represent the piggy bank. The collection can hold money.
This money can be

• A Dollar worth $1.00
• A Quarter worth $0.25
• A Dime worth $0.10
• A Nickel worth $0.05
• A Penny worth $0.01

When creating a coin object, you can optionally give the number of coins being added. If no number is given, the default is 1 coin being added to the piggy bank.

Each coin object should know

• its value
• how many of that coin was added when that object was created
• how to print its total value which is value * number of coins added.

The main program will look something like this pseudocode (remember pseudocode is not meant to be syntactically correct but explain the algorithm):

• Create collection

• piggyBank.add(new Quarter())

• piggyBank.add(new Dime())

• piggyBank.add(new Dollar(5))

• piggyBank.add(new Nickel(3))

• piggyBank.add(new Dime(7))

• piggyBank.add(new Dollar())

• piggyBank.add(new Penny(10))

• Print the contents of the Piggy Bank

  • on the console should appear
    1 Quarter
1 Dime
$5
3 Nickels
7 Dimes
$1
10 Pennies

• Print the value of the Piggy Bank

  • on the console should appear

    The piggy bank holds $7.30

  • Note:

    • In order to format the output appropriately

      • You will need to import java.text.DecimalFormat
      • At the beginning your program, initialize the format with this statement
        DecimalFormat fp = new DecimalFormat("$###,###.00");
      • When you ready to print out the piggy bank value, use a statement like
        System.out.println("The piggy bank holds " + fp.format(myValue));

    • Also notice that when you have more than 1 coin, the pural of the coins name is printed.

Stretch Goals:

• Add the ability to remove coins from the piggy bank

  • Prevent taking more coins than present in the piggy bank

  • Coins do not have to be removed in the same quantity that were added. For example based on the main program above, removing 3 dimes would be allowed. The Piggy Bank should adjust appropriately.

  • Just the amount to be removed should be given. The program will figure out which coins to remove.

  • subtract(1.50)

  • print contents of the Piggy Bank

    • on the console on possible out come is
      $4
7 Dimes
$1
10 Pennies