About applets and secure connection

Hello. I've read some threads but I can't understand a thing about applets and SSL.
I've a signed applet. This applets is embedded with applet tag in a jsp page.
The applet works as a file uploader.
With signing, the applet can access to the user file system without problem, open a connection with the server and upload files.
Now, If I want to use HttpsUrlConnection instead of the standard http connection, what certificate does the applet use for handshake? Does the applet automatically use the same certificate used for signing?
Thank you

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Regards

hi,
Thanks for your reply.
----Port connected L2Switch ---
Cat2960S#show int gi1/0/15
GigabitEthernet1/0/15 is down, line protocol is down (notconnect)
Hardware is Gigabit Ethernet, address is (bia )
MTU 1500 bytes, BW 10000 Kbit/sec, DLY 1000 usec,
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5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
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0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 0 multicast, 0 pause input
0 input packets with dribble condition detected
0 packets output, 0 bytes, 0 underruns
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0 babbles, 0 late collision, 0 deferred
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Building configuration...
interface GigabitEthernet1/0/15
end
Cat2960S#
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GigabitEthernet1/0/9 is up, line protocol is up (connected)
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reliability 255/255, txload 1/255, rxload 1/255
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input flow-control is off, output flow-control is unsupported
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Building configuration...
interface GigabitEthernet1/0/9
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Regards

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