Error filling print... java.lang.Long cannot be cast to java.lang.Boolean java.lang.ClassCastException: java.lang.Long cannot be cast to java.lang.Boolean at net.sf.jasperreports.engine.fill.JRFillDataset.next(JRFillDataset.java:1244) at net.sf.jasperreports.engine.fill.JRFillDataset.next(JRFillDataset.java:1207) at net.sf.jasperreports.engine.fill.JRBaseFiller.next(JRBaseFiller.java:1554) at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillReport(JRVerticalFiller.java:149) at net.sf.jasperreports.engine.fill.JRBaseFiller.fill(JRBaseFiller.java:909) at net.sf.jasperreports.engine.fill.JRBaseFiller.fill(JRBaseFiller.java:822) at net.sf.jasperreports.engine.fill.JRFiller.fill(JRFiller.java:61) at net.sf.jasperreports.engine.JasperFillManager.fill(JasperFillManager.java:446) at net.sf.jasperreports.engine.JasperFillManager.fill(JasperFillManager.java:276) at net.sf.jasperreports.engine.JasperFillManager.fillReport(JasperFillManager.java:745) at com.jaspersoft.ireport.designer.compiler.IReportCompiler.run(IReportCompiler.java:891) at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:572) at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:997) Print not filled. Try to use an EmptyDataSource... no se que es !!!! ayudenme por favor