net.sf.jasperreports.engine.JRException: Report design not valid

[simon]

I'm using jasper reports and I'm getting the following exception when compile my xml

net.sf.jasperreports.engine.JRException: Report design not valid :
1. Warning : Element bottom reaches outside band area : y=20 height=1 band-height=20

What is band how do I set it correctly?

thank you

[oregon]

it seems to be only warning is generated and not error. The warning is because starting from y=20 the height=1 so the vertical position is now 20+1 =21, so the band height must be greater than 21 increase it above 21 say 25.

[ritesh solanki]

Exception in thread "main" java.lang.UnsupportedClassVersionError: (DbReport_1200898605940_430273) bad major version at offset=6
at java.lang.ClassLoader.defineClassImpl(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java :222)
at net.sf.jasperreports.engine.util.JRClassLoader.loa dClass(JRClassLoader.java:245)
at net.sf.jasperreports.engine.util.JRClassLoader.loa dClassFromBytes(JRClassLoader.java:154)
at net.sf.jasperreports.engine.design.JRAbstractJavaC ompiler.loadEvaluator(JRAbstractJavaCompiler.java: 77)
at net.sf.jasperreports.engine.design.JRAbstractCompi ler.loadEvaluator(JRAbstractCompiler.java:327)
at net.sf.jasperreports.engine.design.JRDefaultCompil er.loadEvaluator(JRDefaultCompiler.java:195)
at net.sf.jasperreports.engine.fill.JRFillDataset.cre ateCalculator(JRFillDataset.java:370)
at net.sf.jasperreports.engine.fill.JRBaseFiller.<ini t>(JRBaseFiller.java:341)
at net.sf.jasperreports.engine.fill.JRVerticalFiller. <init>(JRVerticalFiller.java:92)
at net.sf.jasperreports.engine.fill.JRVerticalFiller. <init>(JRVerticalFiller.java:74)
at net.sf.jasperreports.engine.fill.JRFiller.createFi ller(JRFiller.java:147)
at net.sf.jasperreports.engine.fill.JRFiller.fillRepo rt(JRFiller.java:83)
at net.sf.jasperreports.engine.JasperFillManager.fill Report(JasperFillManager.java:601)
at net.sf.jasperreports.engine.JasperFillManager.fill ReportToFile(JasperFillManager.java:492)
at net.sf.jasperreports.engine.JasperFillManager.fill ReportToFile(JasperFillManager.java:448)
at report.DbReportFill.generateReport(DbReportFill.ja va:80)
at report.DbReportFill.main(DbReportFill.java:94)