How to recover key pair from certificate

Hello,
I am trying to sign my MIDlet. I have followed the instruction below to create key pair and obtain a valid certificate from GeoTrust
http://java.sun.com/j2me/docs/wtk2.2/docs/UserGuide-html/security.html
Unfortunately, I deleted the key pairs which I used to create the certificate signing request. Is there anyway I can recover from that? Can I import the key pair from the certificate file? Do I really need the original key pair or I can generate another one?
Please help
Thanks
ben

Hello,
I am trying to sign my MIDlet. I have followed the instruction below to create key pair and obtain a valid certificate from GeoTrust
http://java.sun.com/j2me/docs/wtk2.2/docs/UserGuide-html/security.html
Unfortunately, I deleted the key pairs which I used to create the certificate signing request. Is there anyway I can recover from that? Can I import the key pair from the certificate file? Do I really need the original key pair or I can generate another one?
Please help
Thanks
ben

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