Examples demonstrating how to use Java's logging framework
XMLParsing:
Examples demonstrating various XML parsing techniques and libraries.
Specifically, examples are provided for SAX, DOM, XPath parsing.
An example is provided for parsing HTML as well (using JSoup library).
REST:
Examples demonstrating REST methods (GET, POST, PUT, DELETE)
JDBC:
Examples demonstrating using and interacting with SQL database (MySQL)
through Java database connectivity
ORM:
Examples demonstrating using Hibernate object-relational-mapping framework
to interact with SQL database
JavaScript:
Examples demonstrating use of JavaScript to build UI for Web applications
In each folder there is a README explaining how to run the examples.