Simpliest way to add an attribute to a jar Manifest in Maven

Question

Since the last Java update, I need to tag my applet jars manifest with the Trusted-Library attribute to avoid warning popup when javascript is communicating wit

Answer 1

You can use the jar utility to update manifest for existing .jar files like this:

echo 'Trusted-Library: true' > manifest.mf
jar uvfm your-jar-file.jar ./manifest.mf

For more information, please see the doc and the tutorial at here.