JSF Under the Hood—Part 1 - JSF and HTML5 - page 44

The selectOneMenu component renders a combo-box with a list of beverage items ( Tea , Coffee , Coca-Cola );
when the user selects one of the available beverages, the form is submitted and the valueChangeListener method
(the beverageSelected method of the Beverage managed bean) is executed to calculate the price of the selected
beverage. You may notice that using the rendered attribute, the outputText will not be rendered if the beverage price
is not available.

■ ne stands for (not equal), it is also equivalent to != which is supported by eL. eL also supports the following
relational operators:

Note

1. eq stands for (equal) and it is equivalent to == .

2. lt stands for (less than) and it is equivalent to < .

3. le stands for (less than or equal) and it is equivalent to <=.

4. gt stands for (greater than) and it is equivalent to > .

5. ge stands for (greater than or equal) and it is equivalent to >= .

Listing 2-22 shows the Beverage managed bean.

Listing 2-22. The Beverage Managed Bean

import javax.faces.bean.ManagedBean;
import javax.faces.bean.RequestScoped;
import javax.faces.event.ValueChangeEvent;

@ManagedBean
@RequestScoped
public class Beverage {
private String name;
private Double price;

public String getName() {
return name;
}

public void setName(String name) {
this.name = name;
}

public Double getPrice() {
return price;
}

public void setPrice(Double price) {
this.price = price;
}