Hi, I've installed the Jasper Reports plugin (5.6.2.final) for Eclipse (Kepler), and its default JDK is 1.7. And the four jar-file has generated after re-start Eclipse: jasperreports-5.6.1.jar jaspererports-char_themes-5.6.1.jar jasperreports-fonts-5.6.1.jar jasperreports-functions-5.6.1.jar Next step, I created a simple java application, a report file (test_A4.jrxml) for testing jasperLibrary. The compile message is: net.sf.jasperreports.engine.JRException: Errors were encountered when compiling report expressions class file: C:etesttest_A4_1416984587687_483601.java:2: warning: unmappable character for encoding MS950 * Generated by JasperReports - 2014/11/26 下�?? 2:49 ^ C:etesttest_A4_1416984587687_483601.java:2: warning: unmappable character for encoding MS950 * Generated by JasperReports - 2014/11/26 下�?? 2:49 ^ C:etesttest_A4_1416984587687_483601.java:18: cannot access net.sf.jasperreports.engine.fill.JREvaluator bad class file: C:eclipse-kepler-4.3.2configurationorg.eclipse.osgibundles11961.cplibjasperreports-5.6.1.jar(net/sf/jasperreports/engine/fill/JREvaluator.class) class file has wrong version 50.0, should be 49.0 Please remove or make sure it appears in the correct subdirectory of the classpath. public class test_A4_1416984587687_483601 extends JREvaluator ^ 1 error 2 warnings at net.sf.jasperreports.engine.design.JRAbstractCompiler.compileReport(JRAbstractCompiler.java:204) at net.sf.jasperreports.engine.JasperCompileManager.compile(JasperCompileManager.java:354) at net.sf.jasperreports.engine.JasperCompileManager.compile(JasperCompileManager.java:287) at net.sf.jasperreports.engine.JasperCompileManager.compileReport(JasperCompileManager.java:572) at com.skb.JasperTest.main(JasperTest.java:24) ------------------------------------------------------------ The solution still isn't found after trying for 7 days...Have someone known these problems how to solve ? 1. jasper report file "test_A4.jrxml" has been set "UTF-8", but the warning "MS950" is occured. 2. jasperreports-5.6.1.jar : " class file has wrong version 50.0, should be 49.0 " it means : the testing java code must been compiled at JDK 1.5 to tie in jasperreports-5.6.1.jar Aren't they right ? But, jasperReports API may support JDK1.5~JDK1.8, it seems un-reasonable. 3. When does the JasperSoft Studio 5.6.2 generate "jasperreports-5.6.2.jar" file ? (JasperSoft studio 5.6.2 generates jasperreports-5.6.1.jar file....the standalone version is the same, too.)
