ClassNotFoundException

[nijinpp]

i am new to jasper report i'm trying to convert a jasper file to pdf using java...the ide is netbeans..while running the output error shows as

Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/commons/logging/LogFactory
    at net.sf.jasperreports.engine.util.JRLoader.<clinit>(JRLoader.java:61)
    at net.sf.jasperreports.engine.JasperFillManager.fillReport(JasperFillManager.java:243)
    at JasperTest.main(JasperTest.java:19)
Caused by: java.lang.ClassNotFoundException: org.apache.commons.logging.LogFactory
    at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:248)

please do help me....

[iamwoodyjones]

You're missing a few jars on your class path during run time.  I think that one is the commons logging jar.  Take a look at the jars that come with the jasper distribution to get an idea of jars you need to have during run time.

Good luck.

[nijinpp]

thanks frankhassanabad ...bur after adding the commons logging jar to the classpath i'm still getiing the same error....can u tell me any other reason for that???

[iamwoodyjones]

Lots of great ways to see why something isn't being put onto your classpath during runtime.  First off, open the jar that you downloaded with a zip program and follow it's class structure to make sure that it has the class from your NoClassDefFoundError message.  Then, after adding it to your runtime class path see this link:

http://www.exampledepot.com/egs/java.lang/ClassOrigin.html

Using "java -verbose" you should hopefully see if it's picking up the class from that jar or not.  Good luck.