Chapter 7 - XML Tools in Java

XML, XSD (JAXB, SAX, DOM, STAX)

Reading Materials

·         XML and XSD

·         Oracle Java Tutorial – JAXB – read all.

·         Jenkov Java& XML Tutorial (DOM, SAX, STAX) – read all.

Exercise:

We want to be able to read program parameters from an XML file instead of getting it from the user (through the console).

And we want to print the run results to an XML file.

·         We shall implement this functionality in 3 different ways: DOM, SAX, JAXB.

o    3 different classes should be created for the 3 methods.

·         The writing will be performed through JAXB only.

·         An example for an input file is given in the end of this document (this is only an example. You may choose a different format).

·         Add a validation option with XSD of the XML. You will write the XSD.

Emphasis:

·         Read about the xjc command. What can it do?

·         The classes should implement interfaces. This should improve flexibility and allow integration in our code

XML configuration example:

<ProcessSettings>

      <Algorithm>DoubleShiftUp</Algorithm>

      <KeyPath>c:\temp\encryptor</KeyPath>

      <SourceDirectory>c:\temp\encryptor\source</SourceDirectory>

      <SourceFileName>c:\temp\encryptor\file.txt</SourceFileName>

</ProcessSettings>