The programming
assignment is to implement a class Purse. A purse
contains a collection of coins. Each coin object must contain its
name. You should not put a limit on the number of coins that a purse
can hold. This program should provide the user with the ability to
display the contents of the purse, add coins, count coins, calculate
the amount of money in purse and for extra credit, spend coins. You
will need 2 Java Object Classes: one to define the Coin objects, and
one for the Purse object.
There is a sample PurseTester class and its output. You are required
to use this class to test your code but you may make modifications to
the method calls to match your method names. The code below is the sample tester that I have to use and the code below that is what I have so far. I have no clue what I am doing and I didn't even start the purse class yet. If you could help me, that would be amazing.
public class PurseTester {
public static void main(String[] args)
{
Purse myPurse = new Purse();
System.out.println("Created my purse!");
System.out.println("My Purse = " + myPurse.toString());
System.out.println(String.format("Tota... value = $%.2f\n",
myPurse.getTotalValue()));
System.out.println("Trying to add an invalid coin called
Dollar...");
myPurse.addCoin(new Coin("Dollar"));
System.out.println("My Purse = " + myPurse.toString());
System.out.println(String.format("Tota... value = $%.2f\n",
myPurse.getTotalValue()));
System.out.println("Adding coins to purse");
myPurse.addCoin(new Coin(Coin.PENNY));
myPurse.addCoin(new Coin(Coin.NICKEL));
myPurse.addCoin(new Coin(Coin.PENNY));
myPurse.addCoin(new Coin(Coin.PENNY));
myPurse.addCoin(new Coin(Coin.QUARTER));
myPurse.addCoin(new Coin(Coin.QUARTER));
System.out.println("My Purse = " + myPurse.toString());
System.out.println("I have " + myPurse.countCoin(Coin.PENNY) +
" pennies, " +
myPurse.countCoin(Coin.NICKEL)
+ " nickels, " +
myPurse.countCoin(Coin.DIME) +
" dimes, and " +
myPurse.countCoin(Coin.QUARTER)
+ "quarters.");
System.out.println(String.format("Tota... value = $%.2f\n",
myPurse.getTotalValue()));
/* extra credit from here on down */
System.out.println("Attempting to spend dime that you don't have.");
if (myPurse.spendCoin(Coin.DIME))
System.out.println(Coin.DIME + " was spent!");
else
System.out.println("No " + Coin.DIME + " was found in
purse!");
System.out.println("\nAdding a dime.");
myPurse.addCoin(new Coin(Coin.DIME));
System.out.println("My Purse = " + myPurse.toString());
System.out.println("I have " + myPurse.countCoin(Coin.PENNY) +
" pennies, " +
myPurse.countCoin(Coin.NICKEL)
+ " nickels, " +
myPurse.countCoin(Coin.DIME) +
" dimes, and " +
myPurse.countCoin(Coin.QUARTER)
+ "quarters.");
System.out.println(String.format("Tota... value = $%.2f\n",
myPurse.getTotalValue()));
System.out.println("Spending all my money...");
myPurse.spendCoin(Coin.DIME);
myPurse.spendCoin(Coin.QUARTER);
myPurse.spendCoin(Coin.QUARTER);
myPurse.spendCoin(Coin.PENNY);
myPurse.spendCoin(Coin.PENNY);
myPurse.spendCoin(Coin.NICKEL);
myPurse.spendCoin(Coin.PENNY);
System.out.println("My Purse = " + myPurse.toString());
System.out.println(String.format("Tota... value = $%.2f\n",
myPurse.getTotalValue()));
}
}
Output from PurseTester
Created my purse!
My Purse = Purse[]
Total value = $0.00
Trying to add an invalid coin called Dollar...
My Purse = Purse[]
Total value = $0.00
Adding coins to purse
My Purse = Purse[Penny,Nickel,Penny,Penny,Quarter,Q...
I have 3 pennies, 1 nickels, 0 dimes, and 2 quarters.
Total value = $0.58
Attempting to spend dime that you don't have.
No Dime was found in purse!
Adding a dime.
My Purse = Purse[Penny,Nickel,Penny,Penny,Quarter,Q...
I have 3 pennies, 1 nickels, 1 dimes, and 2 quarters.
Total value = $0.68
Spending all my money...
My Purse = Purse[]
Total value = $0.00
________________________________________________________________________________
__
THIS IS WHAT I HAVE SO FAR!!!!!!! I ONLY STARTED THE COIN CLASS!!!!
public class Coin
{
private final double PENNY = 0.01;
private final double NICKEL = 0.05;
private final double DIME = 0.10;
private final double QUARTER = 0.25;
private double Value;
private String Name;
public double getValue()
{
return Value;
}
public String getName()
{
return Name;
}
public Coin(double aValue)
{
Value = aValue;
Name = "";
}
public Coin(String aName)
{
Value = 0;
Name = aName;
}
public String toString()
{
return "Name:"+ Name +" Value:" + Value;
}
