I have removed all the libs of my class path ... I have only jasperreports-6.7.0.jar in my project path.
Earlier I wrote:You should keep exactly those libraries in the classpath that are needed for whichever version of JasperReports you're using. Jasper probably came with its own set of jar files - use only those.
I saw in forums of internet that solution for this problem is to include the itext-2.1.7 in the class path
roshani sen wrote:A method announced static cannot be overridden yet can be re-declared. If a method can't be acquired, then it is not possible to be altered. A subclass inside the same package as the case's super-class can override any super-class method that isn't declared private or last.
// m4.setSubject(subject); //setSubject() returned null