RefactoringVideoStore/VideoStore/src/Customer.java

import java.util.ArrayList;

public class Customer {

    private final String name;
    private final ArrayList<Rental> rentals = new ArrayList<>();

    public Customer( String name ) {
        this.name = name;
    }

    public void addRental( Rental arg ) {
        rentals.add( arg );
    }

    public String getName() {
        return name;
    }

    public String statement() {
        // add header
        StringBuilder result = new StringBuilder();
        result.append("Rental Record for ").append(getName()).append("\n");

        // add line for each rental
        for( Rental curRental : rentals ) {
            // show figures for this rental
            result.append("\t").append(curRental.getMovie().getTitle()).append("\t days rented: ").append(curRental.getDaysRented()).append("  = ").append(String.valueOf( calculateAmountFor(curRental) )).append("\n");
        }
        // add footer lines
        result.append("Amount owed is ").append(String.valueOf( getTotalAmount() )).append("\n");
        result.append("You earned ").append(String.valueOf( getFrequentRenterPoints() )).append(" frequent renter points");
        return result.toString();
    }
    public double calculateAmountFor (Rental curRental) {
        double thisAmount = 0;
        // determine amounts for each line
        switch( curRental.getMovie().getPriceCode() ) {
            case Movie.REGULAR:
                thisAmount += 2;
                if( curRental.getDaysRented() > 2 )
                    thisAmount += ( curRental.getDaysRented() - 2 ) * 1.5;
                break;
            case Movie.NEW_RELEASE:
                thisAmount += curRental.getDaysRented() * 3;
                break;
            case Movie.CHILDRENS:
                thisAmount += 1.5;
                if( curRental.getDaysRented() > 3 )
                    thisAmount += ( curRental.getDaysRented() - 3 ) * 1.5;
                break;

        }
        return thisAmount;
    }
    public int calculateFrequentRenterPointsFor (Rental curRental){
        int frequentRenterPoints = 1;
        // add bonus for a two day new release rental
        if( ( curRental.getMovie().getPriceCode() == Movie.NEW_RELEASE ) && curRental.getDaysRented() > 1 )
            frequentRenterPoints++;
        return frequentRenterPoints;
    }

    private int getFrequentRenterPoints() {
        int frequentRenterPoints = 0;
        for( Rental curRental : rentals ) {
            // add frequent renter points
            frequentRenterPoints += calculateFrequentRenterPointsFor(curRental);
        }
        return frequentRenterPoints;
    }

    private double getTotalAmount() {
        double totalAmount = 0;
        for( Rental curRental : rentals ) {
            double thisAmount = calculateAmountFor(curRental);
            totalAmount += thisAmount;
        }
        return totalAmount;
    }

}