SSL certificate and multiple JARS

SSL certificate and multiple JARS

My environment is Java 7 and IE10 on 64bit machine. I have a java applet
that depends on 25 other jars. Some of these jars arefrom third party
companies and others are extensions to my main applet jar.
Right now I have to consolidate all jars into one single jar using Eclipse
-> export as executable option. Then I self sign a single jar. I'm doing
this to avoid a browser pop-up warning that says that there are signed and
unsigned jars.
Now if I get an SSL certificate say from DigiCert, will I have go through
the these same steps of consolidating all jars into one? Or maybe having
to sign every single jar, which I also don't really like.
I assume that having a valid SSL certificate would eliminate all these
problems, since all resources from the web site are trustable. Is this
true in my case?
Also, if I use an SSL Certificate, will I need to code sign the applet? Or
would the certificate automatically grant the applet all permissions on
the client's machine?
Thanks in advance.