posted 12 years ago
i'm just posting this one because, it may help for some one, this exception was throwing because of the incompatibility of jar file, i was using the jasper4 and i added the groovy-all-1.0-jsr-02.jar wrong jar file after adding the groovy-all-1.7.5.jar it started to work properly, conclusion is while using the jasper use proper dependence jar files