iReports 4.5.1 throwing error while using TABLE Report Element

Question

Hi I am getting the following error message while using the iReport designer Table Report Element:

Error filling print... java.lang.String cannot be cast to java.lang.Boolean
java.lang.ClassCastException: java.lang.String cannot be cast to java.lang.Boolean
at net.sf.jasperreports.components.table.fill.FillTable.toPrintColumn(FillTable.java:116)
at net.sf.jasperreports.components.table.fill.FillTable$FillColumnEvaluator.visitColumn(FillTable.java:143)
at net.sf.jasperreports.components.table.fill.FillTable$FillColumnEvaluator.visitColumn(FillTable.java:130)
at net.sf.jasperreports.components.table.StandardColumn.visitColumn(StandardColumn.java:73)
at net.sf.jasperreports.components.table.fill.FillTable.evaluateColumns(FillTable.java:205)
at net.sf.jasperreports.components.table.fill.FillTable.evaluate(FillTable.java:98)
at net.sf.jasperreports.engine.fill.JRFillComponentElement.evaluate(JRFillComponentElement.java:88)
at net.sf.jasperreports.engine.fill.JRFillElementContainer.evaluate(JRFillElementContainer.java:257)
at net.sf.jasperreports.engine.fill.JRFillBand.evaluate(JRFillBand.java:473)
at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillColumnBand(JRVerticalFiller.java:2021)
at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillGroupHeader(JRVerticalFiller.java:616)
at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillGroupHeaders(JRVerticalFiller.java:538)
at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillReportStart(JRVerticalFiller.java:263)
at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillReport(JRVerticalFiller.java:128)
at net.sf.jasperreports.engine.fill.JRBaseFiller.fill(JRBaseFiller.java:836)
at net.sf.jasperreports.engine.fill.JRBaseFiller.fill(JRBaseFiller.java:746)
at net.sf.jasperreports.engine.fill.JRFiller.fillReport(JRFiller.java:58)
at net.sf.jasperreports.engine.JasperFillManager.fillReport(JasperFillManager.java:417)
at net.sf.jasperreports.engine.JasperFillManager.fillReport(JasperFillManager.java:247)
at com.jaspersoft.ireport.designer.compiler.IReportCompiler.run(IReportCompiler.java:879)
at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:572)   
at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:997)

I am using Stored Procedures that returns a cursor as output.

I have placed this Table Report element in one of my group header.

thanks in advance

Meeza

Answer 1

Check in your style conditions if there's an evaluation with String. To ensure that everything works fine surround all the style conditions with new Boolean( ... ).