Nicolas Fränkel • 11/9/2025

XML Schema Validation 1.1 in Java

This technical article details the author's experience upgrading a legacy Java application to use XML Schema Definition (XSD) 1.1 for validation. It explains the limitations of XSD 1.0, the new features in version 1.1 (like assertions), and the challenges faced with the JDK's built-in Xerces implementation, which lacks 1.1 support. The post explores investigating the Xerces project branches and ultimately searching for alternatives, mentioning the Saxon XML processing toolkit as a potential solution.

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#legacy code #validation #Java