[Bike]

Please tell me about using XML in Java.

[UnrealEd]

What exactly do you want to hear? XML in combination with a programming language is a quite large topic.

Have you tried searching the web? There are thousands of tutorials on XML and Java

[jon001]

you can look at the Apache components (xalan, xerces) that can generate/parse xml. And also at the JAXB ( Java Api XML binding), which converts Java objects to/from XML