hi, I am confused about constructing modules. if I want to a jar file, Do I add this jar file both as module and pom.xml ? Is it correct ? or Does double introduction of same jar file cause conflict ? regards -- Ahmet Temiz Jeoloji Müh. Afet ve Acil Durum Yönetimi Başkanlığı Bilgi İşlem Dairesi Başkanlığı-CBS Grubu ________________________ Ahmet Temiz Geological Eng. Information Systems - GIS Group Disaster and Emergency Management of Presidency