Prentice.Hall.Introduction.to.Java.Programming,.Brief.Version.9th.(2014).[sharethefiles.com]

The h:selectManyListbox element is bound to the minor property (line
52). When the page is sent to the server, the selected items are
returned as an array of strings and set to the minor property.
The h:selectManyCheckbox element is bound to the hobby property (line
63). When the page is sent to the server, the checked boxes are returned
as an array of itemValues and set to the hobby property.
The h:selectTextarea element is bound to the remarks property (line 75).
When the page is sent to the server, the content in the text area is
returned as a string and set to the remarks property.
The h:outputText element is bound to the response property (line 82).
This is a read-only property in the bean. It is "" if lastName is null
(lines 83-84 in Listing 44.5). When the page is returned to the client,
the response property value is displayed in the output text element
(line 82).
The h:outputText element’s escape attribute is set to false (line 81) to
enable the contents to be displayed in HTML. By default, the escape
attribute is true, which indicates the contents are considered as
regular text.
44.5 Case Study: Calculator
This section uses JSF to develop a calculator to perform addition,
subtraction, multiplication, and division, as shown in Figure 44.21.
Figure 44.21
This JSF application enables you to perform addition, subtraction,
multiplication, and division.
Here are the steps to develop this project:
Step 1. Create a new managed bean named Calculator with the request
scope as shown in Listing 44.7, Calculator.java.
Step 2. Create a JSP facelet named Calculator as shown in Listing 44.8,
Calculator.xhtml.
Listing 44.7 Calculator.java
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