Bonjour,
Lors du lancement de mon programme j'obtiens ce bug:

java version "1.5.0_05"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_05-b05)
Java HotSpot(TM) Client VM (build 1.5.0_05-b05, mixed mode, sharing)

Exception in thread "main" java.lang.SecurityException: class "org.apache.log4j.
spi.LoggingEvent"'s signer information does not match signer information of othe
r classes in the same package
at java.lang.ClassLoader.checkCerts(Unknown Source)
at java.lang.ClassLoader.preDefineClass(Unknown Source)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.access$100(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClassInternal(Unknown Source)
at org.apache.log4j.Category.forcedLog(Category.java:372)
at org.apache.log4j.Category.debug(Category.java:241)
at com.toto.exportXML.ExportXML.main(ExportXML.java:76)
Press any key to continue . . .



J'ai cherché partout sur le net rien à faire : effacer les META-INF , checker les noms de package..tout à l'air bon :S