exception occurred

java.lang.StringIndexOutOfBoundsException at java.lang.String.substring(String.java:1088) at com.ibm._jsp._zu_5F_Uniboard_5F_R._jspService(_zu_5F_Uniboard_5F_R.java:1226) at com.ibm.ws.jsp.runtime.HttpJspBase.service(HttpJspBase.java:87) at javax.servlet.http.HttpServlet.service(HttpServlet.java:856) at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1096) at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:570) at com.ibm.ws.wswebcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:478) at com.ibm.wsspi.webcontainer.servlet.GenericServletWrapper.handleRequest(GenericServletWrapper.java:122) at com.ibm.ws.jsp.webcontainerext.AbstractJSPExtensionServletWrapper.handleRequest(AbstractJSPExtensionServletWrapper.java:226) at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.forward(WebAppRequestDispatcher.java:321) at controller.helpdesk.UniboardServlet.performView(UniboardServlet.java:1141) at controller.helpdesk.UniboardServlet.doPost(UniboardServlet.java:275) at controller.helpdesk.UniboardServlet.doGet(UniboardServlet.java:47) at javax.servlet.http.HttpServlet.service(HttpServlet.java:743) at javax.servlet.http.HttpServlet.service(HttpServlet.java:856) at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1096) at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:570) at com.ibm.ws.wswebcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:478) at com.ibm.ws.webcontainer.servlet.CacheServletWrapper.handleRequest(CacheServletWrapper.java:90) at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:748) at com.ibm.ws.wswebcontainer.WebContainer.handleRequest(WebContainer.java:1466) at com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:119) at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:458) at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewInformation(HttpInboundLink.java:387) at com.ibm.ws.http.channel.inbound.impl.HttpICLReadCallback.complete(HttpICLReadCallback.java:102) at com.ibm.ws.tcp.channel.impl.AioReadCompletionListener.futureCompleted(AioReadCompletionListener.java:165) at com.ibm.io.async.AbstractAsyncFuture.invokeCallback(AbstractAsyncFuture.java:217) at com.ibm.io.async.AsyncChannelFuture.fireCompletionActions(AsyncChannelFuture.java:161) at com.ibm.io.async.AsyncFuture.completed(AsyncFuture.java:136) at com.ibm.io.async.ResultHandler.complete(ResultHandler.java:195) at com.ibm.io.async.ResultHandler.runEventProcessingLoop(ResultHandler.java:743) at com.ibm.io.async.ResultHandler$2.run(ResultHandler.java:873) at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1473)