tests-21.xml

<?xml version="1.0" encoding="UTF-8"?>
<project basedir="." default="test" name="ant-javacard tests">
    <!-- Build test applets -->
    <target name="test">
        <echo message="JDK 21 does not work with any JavaCard kit. See https://github.com/martinpaljak/ant-javacard/wiki/JavaCard-SDK-and-JDK-version-compatibility"/>
    </target>
</project>