Workbook 2.11

Task 1

Create a POJO class for Record objects. The class will have three fields:

    private String item;
    private double revenue;
    private double cost;

Add the usual constructor, getters, and setters.

Task 2

Before returning the view, add the following objects to the model:

    List<Record> records = Arrays.asList(
        new Record("Chair", 20.99, 5.99),
        new Record("Table", 40.99, 8.99),
        new Record("Couch", 100.99, 105.99),
        new Record("Fridge", 200.99, 59.99),
        new Record("Bed", 150.99, 205.99)  
    );

Task 3

Under the header in records.html, create a table similar to the following:

Item	Revenue	Cost	Profit
Data	Data	Data	Data
Data	Data	Data	Data
Data	Data	Data	Data

Task 4

Using a Thymeleaf loop, your table must generate as many rows as there are objects in the records list.

Hint: For the Profit rows, Thymeleaf allows you to subtract using the - operator.

Task 5

double is not suitable for storing currency because it has a certain precision. BigDecimal is an exact way of representing numbers.

1 Update your POJO class accordingly.

---

    private String item;
    private BigDecimal revenue;
    private BigDecimal cost;

2 Use this List instead.

---

    List<Record> records = Arrays.asList(
        new Record("Chair", new BigDecimal("20.99"),  new BigDecimal("5.99")),
        new Record("Table",  new BigDecimal("40.99"),  new BigDecimal("8.99")),
        new Record("Couch",  new BigDecimal("100.99"),  new BigDecimal("105.99")),
        new Record("Fridge",  new BigDecimal("200.99"),  new BigDecimal("59.99")),
        new Record("Bed",  new BigDecimal("150.99"),  new BigDecimal("205.99"))
    );

Expected Output:

---

Task 6

Common types from which Thymeleaf can leverage utility methods are:

• #dates
• #strings
• #arrays
• #lists
• #numbers

Inside Thymeleaf Repo, the Numbers class has a utility method that can format the model attribute into a currency.

Using this information, try to achieve the following output:

Task 7

You can use th:style to format an HTML element.

• th:style must equal background: green if profit is greater than or equal to 0.
• Otherwise, it must equal background: red.

Good Luck!