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JAR Java archives (JARs) may contain one or more class files. One of them will be chosen as main class, which must be specified in a {{Code|Main-Class}} entry in the manifest file ({{Code|META-INF/MANIFEST.MF}}). This fully qualified Java class name will be rewritten to a file path by replacing the dots with slashes and attaching the {{Code|.jar}} file suffix, and the original file will be renamed and copied to that path into the repository.
→Java
For general notes in importing Java classes, please read the Java Bindings article on [[Java Bindings#Module_Imports|Module Imports]].
If the class will be imported, an instance of it will be created, and its public functions can then be addressed from XQuery. A class may extend the {{Code|QueryModule}} class to get access to the current query context and to be enriched by some helpful annotations (see [[Java_Bindings#Context-Awareness|Context-Awareness]]).
