Ola, estou testando um codigo da minha apostila da EADCON sobre java, mysql e iReport, e quando eu compilo
esta aparecendo o seguinte erro:
Exception in thread "AWT-EventQueue-0" java.lang.ClassCastException: com.mysql.jdbc.ResultSetImpl
at appcadastro.AppCadastro.gerarReport(AppCadastro.java:137)
at appcadastro.AppCadastro.actionPerformed(AppCadastro.java:122)
at java.awt.Button.processActionEvent(Button.java:388)
at java.awt.Button.processEvent(Button.java:356)
at java.awt.Component.dispatchEventImpl(Component.java:3984)
at java.awt.Component.dispatchEvent(Component.java:3819)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:463)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:242)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:149)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)
O que pode estar gerando esse erro?
VLW 