Hi, i got a simple question. I have set the classpool to a jar file and obtained a CtClass Object from it. I changed the bytecode of this class. Now how do i write it back into the jar file? When i use class.writeFile() without parameters it's not saved inside the jar. When i give a new location as parameter the modified classfile is saved correct to that place. But how do i overwrite the original classfile iside the jar? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4124200#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...