Of course the NPE ise thrown in that line: | System.out.println(newSubgroup.getNazwapodgrupy()); | View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4088965#4088965 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4088965