There are many XML parsing libraries, including Xerces, JAXB, JAXP, Dom4j, and Xstream. Xerces2 is the next generation of high-performance, fully compliant XML parsers in the Apache Xerces family.

This new version of Xerces introduces the Xerces Native Interface (XNI), a complete framework for building parser components and configurations that is extremely modular and easy to program.

The Apache Xerces2 parser is the reference implementation of XNI, but other parser components, configurations, and parsers can be written using the Xerces Native Interface.

Dom4j is another flexible XML framework for Java applications. If you want to learn more about XML parsing in Java, I suggest you take a look at the Java Web Services and XML online course on Udemy.