Learning Processing: A Beginner's Guide to Programming Images ...

� student �
� id � 002 � /id �
� name � Zoog � /name �
� phone � 555-555-5555 � /phone �
� email � zoog@planetzoron.uni � /email �
� address �
� street � 45.3 Nebula 5 � /street �
� city � Boolean City � /city �
� state � Booles � /state �
� zip � 12358 � /zip �
� /address �
� /student �
� /students �
Data Input 345
Note the similarities to object-oriented programming. We could think of the XML tree in the following
terms. Th e XML document represents an array of student objects. Each student object has multiple pieces
of information, an id, a name, a phone number, an e-mail address, and a mailing address. Th e mailing
address is also an object that also has multiple pieces of data, such as street, city, state, and zip.
Exercise 18-11: Revisit the “ Bubble ” Example 18-3. Design an XML tree structure for
Bubble objects. Diagram the tree and write out the XML source. (Use the empty diagram
and fi ll in the blanks below.)
� ?xml version = "1.0"? �
� ________ �
� bubble �
� ________ � 40 � /________ �
� ________ � 100 � /________ �
� ________ � 255 � /green �
�________ �
� /bubbles �
Returning to the weather example, we can now make some sense of Yahoo’s XML data with the tree
structure terms of a tree. Here is the raw XML source. (Note I have edited it for simplifi cation purposes.)