Accessing Web Services - Beginning Java ME Platform - page 327

Table 13-1. XML Character Entities

Entity Character Represents

& &

Ampersand

&lt; <

Less than

&gt; >

Greater than

&apos; '

Apostrophe

&quot; "

Quotation mark

Listing 13-5 shows a simple unparsed character directive example.

Listing 13-5. An Example of Unparsed Character Data Using XML's CDATA Directive

<?xml version="1.0" encoding="UTF-8"?>
<root>
<![CDATA[
Every character within the CDATA construct is treated as a
regular character; there are no restrictions, so I can write
things like3<4without confusing the XML parser.
]]>
</root>

An XML document may define one or more namespaces that define uniquely named
elements and attributes within the document. This permits an XML document to use a
single element or attribute for multiple purposes, such as an <id> element that pertains
to both a customer and a product ID. When using namespaces, you use the XML-
restricted xmlns tag to define a unique URL that identifies the namespace; namespace
names precede the tag name in tags. You separate the namespace name from the tag
name using a colon, as Listing 13-6 shows.

Listing 13-6. An Example of XML Namespaces

<?xml version="1.0" encoding="UTF-8"?>
<!-- A simple weather example -->
<wx:weather city="Berkeley" state="CA" country="USA"
xmlns:wx="www.apress.com/rischpater/weather">
<wx:temperatures units="F">
<wx:temperature type="high">76</wx:temperature>
<wx:temperature type="low">56</wx:temperature>
<wx:temperature type="current">56</wx:temperature>
</wx:temperatures>