A cipher suite is a combination of cryptographic parameters that define the security algorithms and key sizes used for authentication, key agreement, encryption, and integrity protection.
A certificate is a digitally signed statement vouching for the identity and public key of an entity (person, company, etc.).
A digital signature is the digital equivalent of a handwritten signature.
JSSE provides both an application programming interface (API) framework and an implementation of that API.
Certificates can either be self-signed or issued by a Certification Authority (CA).
Certification Authorities are entities that are trusted to issue valid certificates for other entities.
JSSE encompasses many of the same concepts and algorithms as those in JCE but automatically applies them underneath a simple stream socket API.
The JSSE APIs were designed to allow other SSL/TLS protocol and Public Key Infrastructure (PKI) implementations to be plugged in seamlessly.