CoinPurse.java

import java.io.*;
import java.util.*; 

public class CoinPurse {
    
    private double amount; 

    public void setup () {
	amount = 0.00; 
    }

    public void addTo (Coin c) {
	amount = amount + c.getValue(); 
    }

    public void removeFrom (Coin c) {
	amount = amount - c.getValue(); 
    }

    public double getAmount () {
	return amount; 
    }

}