2014-02-27 17:06:02.471:WARN::Error for /ZSSMemoryIssue/zkau java.lang.OutOfMemoryError: Java heap space at java.util.Arrays.copyOf(Arrays.java:2882) at java.lang.AbstractStringBuilder.expandCapacity(AbstractStringBuilder.java:100) at java.lang.AbstractStringBuilder.append(AbstractStringBuilder.java:390) at java.lang.StringBuffer.append(StringBuffer.java:224) at org.zkoss.json.JSONArray.toJSONString(JSONArray.java:49) at org.zkoss.json.JSONArray.toJSONString(JSONArray.java:185) at org.zkoss.json.JSONValue.toJSONString(JSONValue.java:96) at org.zkoss.json.JSONObject.toJSONString(JSONObject.java:66) at org.zkoss.json.JSONObject.toJSONString(JSONObject.java:45) at org.zkoss.json.JSONObject.toJSONString(JSONObject.java:55) at org.zkoss.json.JSONObject.toString(JSONObject.java:75) at org.zkoss.zk.au.http.HttpAuWriter.complete(HttpAuWriter.java:90) at org.zkoss.zk.ui.impl.UiEngineImpl.execUpdate(UiEngineImpl.java:1248) at org.zkoss.zk.au.http.DHtmlUpdateServlet.process(DHtmlUpdateServlet.java:601) at org.zkoss.zk.au.http.DHtmlUpdateServlet.doGet(DHtmlUpdateServlet.java:483) at org.zkoss.zk.au.http.DHtmlUpdateServlet.doPost(DHtmlUpdateServlet.java:492) at javax.servlet.http.HttpServlet.service(HttpServlet.java:727) at javax.servlet.http.HttpServlet.service(HttpServlet.java:820) at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511) at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:401) at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216) at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182) at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:766) at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:450) at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152) at org.mortbay.jetty.Server.handle(Server.java:326) at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542) at org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:945) at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:756) at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:218) at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404) at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:410) Feb 27, 2014 5:06:28 PM org.zkoss.zk.ui.impl.UiEngineImpl handleError:1363 SEVERE: >>java.util.ConcurrentModificationException >> at java.util.LinkedHashMap$LinkedHashIterator.nextEntry(LinkedHashMap.java:373) >> at java.util.LinkedHashMap$EntryIterator.next(LinkedHashMap.java:392) >> at java.util.LinkedHashMap$EntryIterator.next(LinkedHashMap.java:391) >> at org.zkoss.util.CacheMap.expunge(CacheMap.java:228) >> at org.zkoss.util.CacheMap.doExpunge(CacheMap.java:208) >> at org.zkoss.util.CacheMap.tryExpunge(CacheMap.java:202) >> at org.zkoss.util.CacheMap.get(CacheMap.java:391) >> at org.zkoss.poi.ss.format.CellNumberFormatter.getFormatter(CellNumberFormatter.java:112) >> at org.zkoss.poi.ss.format.CellFormat$1.apply(CellFormat.java:119) >> at org.zkoss.poi.ss.format.CellFormat.apply(CellFormat.java:317) >> at org.zkoss.zss.model.sys.impl.BookHelper.getFormatText(BookHelper.java:1088) >> at org.zkoss.zss.ui.impl.XUtils.getFormatText(XUtils.java:343) >> at org.zkoss.zss.ui.impl.XUtils.getCellFormatText(XUtils.java:88) >> at org.zkoss.zss.ui.Spreadsheet$ExtraCtrl.getCellAttr(Spreadsheet.java:3257) >> at org.zkoss.zss.ui.Spreadsheet$ExtraCtrl.getRangeAttrs(Spreadsheet.java:3086) >> at org.zkoss.zss.ui.Spreadsheet.responseUpdateCell(Spreadsheet.java:2671) >> at org.zkoss.zss.ui.Spreadsheet.updateCell(Spreadsheet.java:2640) >> at org.zkoss.zss.ui.Spreadsheet.access$4400(Spreadsheet.java:193) >> at org.zkoss.zss.ui.Spreadsheet$InnerDataListener.onContentChange(Spreadsheet.java:2288) >> at org.zkoss.zss.ui.Spreadsheet$InnerDataListener.access$1200(Spreadsheet.java:1994) >> at org.zkoss.zss.ui.Spreadsheet$InnerDataListener$7.onEvent(Spreadsheet.java:2037) >> at org.zkoss.zss.engine.event.EventDispatchListener.onEvent(EventDispatchListener.java:43) >> at org.zkoss.zssex.engine.impl.RefBookImpl$DelegateListener.onEvent(Unknown Source) >> at org.zkoss.zk.ui.event.impl.DesktopEventQueue$QueueListener.onEvent(DesktopEventQueue.java:150) >> at org.zkoss.zk.ui.AbstractComponent.onEvent(AbstractComponent.java:2743) >> at org.zkoss.zk.ui.AbstractComponent.service(AbstractComponent.java:2714) >> at org.zkoss.zk.ui.AbstractComponent.service(AbstractComponent.java:2655) >> at org.zkoss.zk.ui.impl.EventProcessor.process(EventProcessor.java:136) >> at org.zkoss.zk.ui.impl.UiEngineImpl.processEvent(UiEngineImpl.java:1721) >> at org.zkoss.zk.ui.impl.UiEngineImpl.process(UiEngineImpl.java:1506) >> at org.zkoss.zk.ui.impl.UiEngineImpl.execUpdate(UiEngineImpl.java:1216) >> at org.zkoss.zk.au.http.DHtmlUpdateServlet.process(DHtmlUpdateServlet.java:601) >> at org.zkoss.zk.au.http.DHtmlUpdateServlet.doGet(DHtmlUpdateServlet.java:483) >> at org.zkoss.zk.au.http.DHtmlUpdateServlet.doPost(DHtmlUpdateServlet.java:492) >> at javax.servlet.http.HttpServlet.service(HttpServlet.java:727) >> at javax.servlet.http.HttpServlet.service(HttpServlet.java:820) >> at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511) >> at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:401) >> at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216) >> at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182) >> at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:766) >> at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:450) >> at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152) >> at org.mortbay.jetty.Server.handle(Server.java:326) >> at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542) >> at org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:945) >> at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:756) >> at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:218) >> at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404) >> at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:410) >> at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)