i have tried for developing jasper report generation in PDF using struts2,in a JDeveloper,i'm gettigng below error: " java.lang.NoSuchMethodException: groovy.runtime.metaclass.java.util.HashMapMetaClass.<init>(groovy.lang.MetaClass)" compiler is unable to run the JasperPrint file and jasper classess ,i have added all the jar file which is required.but still getting proble. please kidly help,my production was stopped due to this error.