2005 IR Help Posted September 2, 2006 Share Posted September 2, 2006 By: Alex - aartini java.lang.ClassCastException 2005-06-21 12:49 I'd like to execute a small java program that run a compiled report. I imported all package net.sf.jasperreports and in main I have: String fileName = "c:test.jasper"; try { JasperPrint jasperPrint = (JasperPrint)JRLoader.loadObject(fileName); JasperPrintManager.printReport(jasperPrint,true); } catch (JRException e) { e.printStackTrace(); System.exit(1); } catch (Exception e) { e.printStackTrace(); System.exit(1); } program returns a ClassCastException in net.sf.jasperreports.engine.JasperReport, but I don't know why. Anyone can help me? Thanks By: C-Box - c-box RE: java.lang.ClassCastException 2005-06-21 22:43 Well a file with the extension ".jasper" is a compiled Report... not a filled one.... you must load this report and call the fill-method where you pass in your parameters and datasource/connection...... what you get is a JasperPrint-Object that can be printed or viewed or exported..... so what you have to do is to load your compiled report and fill it... or load a so call ".jrprint" file... this is a filled report that could be loaded and printed directly hth C-Box By: Alex - aartini RE: java.lang.ClassCastException 2005-06-23 14:18 Could you please, explain me a step by step example? Thanks Link to comment Share on other sites More sharing options...
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