please, anyone can help me? I had an error for exporting jasper report to pdf
Exception in thread "AWT-EventQueue-0" java.lang.NoClassDefFoundError: com/lowagie/text/DocumentException
at net.sf.jasperreports.export.pdf.classic.ClassicPdfProducerFactory.createProducer(ClassicPdfProducerFactory.java:44)
at net.sf.jasperreports.engine.export.JRPdfExporter.createPdfProducer(JRPdfExporter.java:882)
at net.sf.jasperreports.engine.export.JRPdfExporter.initExport(JRPdfExporter.java:711)
at net.sf.jasperreports.engine.export.JRPdfExporter.exportReport(JRPdfExporter.java:672)
at net.sf.jasperreports.engine.JasperExportManager.exportToPdfFile(JasperExportManager.java:155)
at net.sf.jasperreports.engine.JasperExportManager.exportReportToPdfFile(JasperExportManager.java:503)