security exception while executing jar

[Vikas Sahu]

java -jar work1and2.jar
Exception in thread "main" java.lang.SecurityException: no manifiest section for
signature file entry javax/help/resources/Constants_zh.class
at sun.security.util.SignatureFileVerifier.verifySection(Unknown Source)

at sun.security.util.SignatureFileVerifier.processImpl(Unknown Source)
at sun.security.util.SignatureFileVerifier.process(Unknown Source)
at java.util.jar.JarVerifier.processEntry(Unknown Source)
at java.util.jar.JarVerifier.update(Unknown Source)
at java.util.jar.JarFile.initializeVerifier(Unknown Source)
at java.util.jar.JarFile.getInputStream(Unknown Source)
at sun.misc.URLClassPath$JarLoader$1.getInputStream(Unknown Source)
at sun.misc.Resource.cachedInputStream(Unknown Source)
at sun.misc.Resource.getByteBuffer(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)

[Peter Chase]

Have you:

Added files to a Jar that came signed from somewhere.

Removed files from a Jar that came signed from somewhere.

Constructed a Jar from the contents of other Jars, some of which were signed.

?
[ October 18, 2004: Message edited by: Peter Chase ]