JSF datatable

Assuntos Gerais Agile
#1

Pessola estou tendo problemas com o componete <h:dataTable do faces

segue o erro.

javax.servlet.ServletException&#58; javax.servlet.jsp.JspException&#58; Error getting property 'ListaAlerta' from bean of type jsfHello.Alerta
	org.apache.jasper.runtime.PageContextImpl.doHandlePageException&#40;PageContextImpl.java&#58;821&#41;
	org.apache.jasper.runtime.PageContextImpl.handlePageException&#40;PageContextImpl.java&#58;758&#41;
	org.apache.jsp.pages.Alerta_jsp._jspService&#40;Alerta_jsp.java&#58;86&#41;
	org.apache.jasper.runtime.HttpJspBase.service&#40;HttpJspBase.java&#58;94&#41;
	javax.servlet.http.HttpServlet.service&#40;HttpServlet.java&#58;810&#41;
	org.apache.jasper.servlet.JspServletWrapper.service&#40;JspServletWrapper.java&#58;298&#41;
	org.apache.jasper.servlet.JspServlet.serviceJspFile&#40;JspServlet.java&#58;292&#41;
	org.apache.jasper.servlet.JspServlet.service&#40;JspServlet.java&#58;236&#41;
	javax.servlet.http.HttpServlet.service&#40;HttpServlet.java&#58;810&#41;
	com.sun.faces.context.ExternalContextImpl.dispatch&#40;ExternalContextImpl.java&#58;322&#41;
	com.sun.faces.application.ViewHandlerImpl.renderView&#40;ViewHandlerImpl.java&#58;130&#41;
	com.sun.faces.lifecycle.RenderResponsePhase.execute&#40;RenderResponsePhase.java&#58;87&#41;
	com.sun.faces.lifecycle.LifecycleImpl.phase&#40;LifecycleImpl.java&#58;200&#41;
	com.sun.faces.lifecycle.LifecycleImpl.render&#40;LifecycleImpl.java&#58;117&#41;
	javax.faces.webapp.FacesServlet.service&#40;FacesServlet.java&#58;198&#41;

Alguem sabe me dizer pq diso.

Abraços

#2