Bom dia, Ao reproduzir um sistema JSF parecido com o que tem no curso de JSF, ao clicar no botão gravar, recebo a mensagem: ``` HTTP Status 500 - java.lang.NoClassDefFoundError: Could not initialize class br.com.home.webcarro.dao.JPAUtil
type Exception report
message java.lang.NoClassDefFoundError: Could not initialize class br.com.home.webcarro.dao.JPAUtil
description The server encountered an internal error that prevented it from fulfilling this request.
exception
javax.servlet.ServletException: java.lang.NoClassDefFoundError: Could not initialize class br.com.home.webcarro.dao.JPAUtil javax.faces.webapp.FacesServlet.service(FacesServlet.java:606) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)
root cause
javax.faces.el.EvaluationException: java.lang.NoClassDefFoundError: Could not initialize class br.com.home.webcarro.dao.JPAUtil javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:101) com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:101) javax.faces.component.UICommand.broadcast(UICommand.java:315) javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:791) javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1256) com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81) com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101) com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118) javax.faces.webapp.FacesServlet.service(FacesServlet.java:593) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)
root cause
java.lang.NoClassDefFoundError: Could not initialize class br.com.home.webcarro.dao.JPAUtil br.com.home.webcarro.dao.DAO.adiciona(DAO.java:19) br.com.home.webcarro.bean.CarroBean.gravar(CarroBean.java:28) sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) java.lang.reflect.Method.invoke(Unknown Source) org.apache.el.parser.AstValue.invoke(AstValue.java:278) org.apache.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:274) com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:105) javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:87) com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:101) javax.faces.component.UICommand.broadcast(UICommand.java:315) javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:791) javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1256) com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81) com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101) com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118) javax.faces.webapp.FacesServlet.service(FacesServlet.java:593) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)
note The full stack trace of the root cause is available in the Apache Tomcat/7.0.47 logs. ```
Alguém pode me ajudar ?
