If your project does not use a build tool like Maven or Gradle, you can download the raw JAR file directly from verified repositories:
Once downloaded, you must add the JAR to your project’s classpath. The method depends on your development environment.
java.lang.NoClassDefFoundError: net.sf.jasperreports.extensions.ExtensionsEnvironment
For older projects, the iReport repository may contain the dependency:
The most crucial functionality provided by this JAR is the XPath2 query executor. This feature allows reports to use XPath as a query language, enabling them to fetch and process data directly from XML data sources. In earlier JasperReports versions, this capability was not part of the standard distribution and required this external JAR file to be added to the project’s classpath.