Proble con nullPointerException

[Junias]

Por cierto aqui teneis el error que me da: ADVERTENCIA: StandardWrapperValve[jsp]: PWC1406: Servlet.service() for servlet jsp threw exception
java.lang.NullPointerException
at org.apache.jsp.altaKiosco_jsp._jspService(altaKios co_jsp.java from :90)
at org.apache.jasper.runtime.HttpJspBase.service(Http JspBase.java:109)
at javax.servlet.http.HttpServlet.service(HttpServlet .java:847)
at org.apache.jasper.servlet.JspServletWrapper.servic e(JspServletWrapper.java:406)
at org.apache.jasper.servlet.JspServlet.serviceJspFil e(JspServlet.java:483)
at org.apache.jasper.servlet.JspServlet.service(JspSe rvlet.java:373)
at javax.servlet.http.HttpServlet.service(HttpServlet .java:847)
at org.apache.catalina.core.StandardWrapper.service(S tandardWrapper.java:1523)
at org.apache.catalina.core.StandardWrapperValve.invo ke(StandardWrapperValve.java:279)
at org.apache.catalina.core.StandardContextValve.invo ke(StandardContextValve.java:188)
at org.apache.catalina.core.StandardPipeline.invoke(S tandardPipeline.java:641)
at com.sun.enterprise.web.WebPipeline.invoke(WebPipel ine.java:97)
at com.sun.enterprise.web.PESessionLockingStandardPip eline.invoke(PESessionLockingStandardPipeline.java :85)
at org.apache.catalina.core.StandardHostValve.invoke( StandardHostValve.java:185)
at org.apache.catalina.connector.CoyoteAdapter.doServ ice(CoyoteAdapter.java:325)
at org.apache.catalina.connector.CoyoteAdapter.servic e(CoyoteAdapter.java:226)
at com.sun.enterprise.v3.services.impl.ContainerMappe r.service(ContainerMapper.java:165)
at com.sun.grizzly.http.ProcessorTask.invokeAdapter(P rocessorTask.java:791)
at com.sun.grizzly.http.ProcessorTask.doProcess(Proce ssorTask.java:693)
at com.sun.grizzly.http.ProcessorTask.process(Process orTask.java:954)
at com.sun.grizzly.http.DefaultProtocolFilter.execute (DefaultProtocolFilter.java:170)
at com.sun.grizzly.DefaultProtocolChain.executeProtoc olFilter(DefaultProtocolChain.java:135)
at com.sun.grizzly.DefaultProtocolChain.execute(Defau ltProtocolChain.java:102)
at com.sun.grizzly.DefaultProtocolChain.execute(Defau ltProtocolChain.java:88)
at com.sun.grizzly.http.HttpProtocolChain.execute(Htt pProtocolChain.java:76)
at com.sun.grizzly.ProtocolChainContextTask.doCall(Pr otocolChainContextTask.java:53)
at com.sun.grizzly.SelectionKeyContextTask.call(Selec tionKeyContextTask.java:57)
at com.sun.grizzly.ContextTask.run(ContextTask.java:6 9)
at com.sun.grizzly.util.AbstractThreadPool$Worker.doW ork(AbstractThreadPool.java:330)
at com.sun.grizzly.util.AbstractThreadPool$Worker.run (AbstractThreadPool.java:309)
at java.lang.Thread.run(Thread.java:662)

INFO: Loading application Incidencias at /Incidencias
INFO: Incidencias was successfully deployed in 2.844 milliseconds.
ADVERTENCIA: StandardWrapperValve[jsp]: PWC1406: Servlet.service() for servlet jsp threw exception
java.lang.NullPointerException
at org.apache.jsp.altaKiosco_jsp._jspService(altaKios co_jsp.java from :93)
at org.apache.jasper.runtime.HttpJspBase.service(Http JspBase.java:109)
at javax.servlet.http.HttpServlet.service(HttpServlet .java:847)
at org.apache.jasper.servlet.JspServletWrapper.servic e(JspServletWrapper.java:406)
at org.apache.jasper.servlet.JspServlet.serviceJspFil e(JspServlet.java:483)
at org.apache.jasper.servlet.JspServlet.service(JspSe rvlet.java:373)
at javax.servlet.http.HttpServlet.service(HttpServlet .java:847)
at org.apache.catalina.core.StandardWrapper.service(S tandardWrapper.java:1523)
at org.apache.catalina.core.StandardWrapperValve.invo ke(StandardWrapperValve.java:279)
at org.apache.catalina.core.StandardContextValve.invo ke(StandardContextValve.java:188)
at org.apache.catalina.core.StandardPipeline.invoke(S tandardPipeline.java:641)
at com.sun.enterprise.web.WebPipeline.invoke(WebPipel ine.java:97)
at com.sun.enterprise.web.PESessionLockingStandardPip eline.invoke(PESessionLockingStandardPipeline.java :85)
at org.apache.catalina.core.StandardHostValve.invoke( StandardHostValve.java:185)
at org.apache.catalina.connector.CoyoteAdapter.doServ ice(CoyoteAdapter.java:325)
at org.apache.catalina.connector.CoyoteAdapter.servic e(CoyoteAdapter.java:226)
at com.sun.enterprise.v3.services.impl.ContainerMappe r.service(ContainerMapper.java:165)
at com.sun.grizzly.http.ProcessorTask.invokeAdapter(P rocessorTask.java:791)
at com.sun.grizzly.http.ProcessorTask.doProcess(Proce ssorTask.java:693)
at com.sun.grizzly.http.ProcessorTask.process(Process orTask.java:954)
at com.sun.grizzly.http.DefaultProtocolFilter.execute (DefaultProtocolFilter.java:170)
at com.sun.grizzly.DefaultProtocolChain.executeProtoc olFilter(DefaultProtocolChain.java:135)
at com.sun.grizzly.DefaultProtocolChain.execute(Defau ltProtocolChain.java:102)
at com.sun.grizzly.DefaultProtocolChain.execute(Defau ltProtocolChain.java:88)
at com.sun.grizzly.http.HttpProtocolChain.execute(Htt pProtocolChain.java:76)
at com.sun.grizzly.ProtocolChainContextTask.doCall(Pr otocolChainContextTask.java:53)
at com.sun.grizzly.SelectionKeyContextTask.call(Selec tionKeyContextTask.java:57)
at com.sun.grizzly.ContextTask.run(ContextTask.java:6 9)
at com.sun.grizzly.util.AbstractThreadPool$Worker.doW ork(AbstractThreadPool.java:330)
at com.sun.grizzly.util.AbstractThreadPool$Worker.run (AbstractThreadPool.java:309)
at java.lang.Thread.run(Thread.java:662)

ADVERTENCIA: StandardWrapperValve[jsp]: PWC1406: Servlet.service() for servlet jsp threw exception
java.lang.NullPointerException
at org.apache.jsp.altaKiosco_jsp._jspService(altaKios co_jsp.java from :93)
at org.apache.jasper.runtime.HttpJspBase.service(Http JspBase.java:109)
at javax.servlet.http.HttpServlet.service(HttpServlet .java:847)
at org.apache.jasper.servlet.JspServletWrapper.servic e(JspServletWrapper.java:406)
at org.apache.jasper.servlet.JspServlet.serviceJspFil e(JspServlet.java:483)
at org.apache.jasper.servlet.JspServlet.service(JspSe rvlet.java:373)
at javax.servlet.http.HttpServlet.service(HttpServlet .java:847)
at org.apache.catalina.core.StandardWrapper.service(S tandardWrapper.java:1523)
at org.apache.catalina.core.StandardWrapperValve.invo ke(StandardWrapperValve.java:279)
at org.apache.catalina.core.StandardContextValve.invo ke(StandardContextValve.java:188)
at org.apache.catalina.core.StandardPipeline.invoke(S tandardPipeline.java:641)
at com.sun.enterprise.web.WebPipeline.invoke(WebPipel ine.java:97)
at com.sun.enterprise.web.PESessionLockingStandardPip eline.invoke(PESessionLockingStandardPipeline.java :85)
at org.apache.catalina.core.StandardHostValve.invoke( StandardHostValve.java:185)
at org.apache.catalina.connector.CoyoteAdapter.doServ ice(CoyoteAdapter.java:325)
at org.apache.catalina.connector.CoyoteAdapter.servic e(CoyoteAdapter.java:226)
at com.sun.enterprise.v3.services.impl.ContainerMappe r.service(ContainerMapper.java:165)
at com.sun.grizzly.http.ProcessorTask.invokeAdapter(P rocessorTask.java:791)
at com.sun.grizzly.http.ProcessorTask.doProcess(Proce ssorTask.java:693)
at com.sun.grizzly.http.ProcessorTask.process(Process orTask.java:954)
at com.sun.grizzly.http.DefaultProtocolFilter.execute (DefaultProtocolFilter.java:170)
at com.sun.grizzly.DefaultProtocolChain.executeProtoc olFilter(DefaultProtocolChain.java:135)
at com.sun.grizzly.DefaultProtocolChain.execute(Defau ltProtocolChain.java:102)
at com.sun.grizzly.DefaultProtocolChain.execute(Defau ltProtocolChain.java:88)
at com.sun.grizzly.http.HttpProtocolChain.execute(Htt pProtocolChain.java:76)
at com.sun.grizzly.ProtocolChainContextTask.doCall(Pr otocolChainContextTask.java:53)
at com.sun.grizzly.SelectionKeyContextTask.call(Selec tionKeyContextTask.java:57)
at com.sun.grizzly.ContextTask.run(ContextTask.java:6 9)
at com.sun.grizzly.util.AbstractThreadPool$Worker.doW ork(AbstractThreadPool.java:330)
at com.sun.grizzly.util.AbstractThreadPool$Worker.run (AbstractThreadPool.java:309)
at java.lang.Thread.run(Thread.java:662)