Java signature jar and server certificate

Can I sign a Java Web launch application using a server certificate? What I want to know is whether it works My server has a reliable certificate. I want to sign an application with the same certificate again

Now, I have this warning:

Can I start my application without warning that the certificate is not trusted?

Solution

If you do not use a code signing certificate, you will receive a warning For most CAS, the cost of code signing certificates is higher than that of server certificates In my opinion, this is just a marketing plan that allows you to pay for another certificate There is no technical difference between the two certificates Some CAS may provide combined protocols for both