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java.lang.NullPointerException: 	at com.mydomain.applications.cardapplication.view.CardapplicationsAction.prepareModel(CardapplicationsAction.java:23)	at oracle.adf.controller.struts.actions.DataAction.prepareModel(DataAction.java:496)	at oracle.adf.controller.lifecycle.PageLifecycle.handleLifecycle(PageLifecycle.java:93)	at oracle.adf.controller.struts.actions.DataAction.handleLifecycle(DataAction.java:232)	at oracle.adf.controller.struts.actions.DataAction.execute(DataAction.java:163)	at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:484)	at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274)	at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)	at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:525)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)	at com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:765)	at com.evermind.server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:317)	at com.evermind.server.http.ServletRequestDispatcher.forward(ServletRequestDispatcher.java:251)	at org.apache.struts.action.RequestProcessor.doForward(RequestProcessor.java:1069)	at org.apache.struts.action.RequestProcessor.processForwardConfig(RequestProcessor.java:455)	at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:279)	at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)	at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:525)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)	at com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:765)	at com.evermind.server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:317)	at com.evermind.server.http.ServletRequestDispatcher.forward(ServletRequestDispatcher.java:251)	at oracle.portal.provider.v2.render.http.AbstractResourceRenderer.renderBody(Unknown Source)	at oracle.portal.provider.v2.render.RenderManager.render(Unknown Source)	at oracle.portal.provider.v2.DefaultPortletInstance.render(Unknown Source)	at oracle.webdb.provider.v2.adapter.soapV1.ProviderAdapter.showPortlet(Unknown Source)	at oracle.webdb.provider.v2.adapter.soapV1.ProviderAdapter.handleHttp(Unknown Source)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)	at java.lang.reflect.Method.invoke(Method.java:324)	at oracle.webdb.provider.v2.adapter.SOAPServlet.doHTTPCall(Unknown Source)	at oracle.webdb.provider.v2.adapter.SOAPServlet.service(Unknown Source)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)	at com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:765)	at com.evermind.server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:317)	at com.evermind.server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:793)	at com.evermind.server.http.AJPRequestHandler.run(AJPRequestHandler.java:208)	at com.evermind.server.http.AJPRequestHandler.run(AJPRequestHandler.java:125)	at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:192)	at java.lang.Thread.run(Thread.java:536)