I have read carefully your nice article. I have found the following problem:
If I try to jar a list of files...
jar cvfm *.class META-INF/*
with the manifest like this:
I get this error from the jar tool: "invalid header file".
Do you know how to overcome this problem ?
Also I tried to build the jar file in Windows using winzip but when I invoke the bean that use utils classes then I get another error: "Illegal access error".