Are there any way to know TLS alert (certificate_expired) from client?

Hello folks,
It's first time for me to implement TLS server with Java, and need your suggestion about TLS alert protocol.
RFC2256 defines TLS alert, for example, for "certificate_expired".
I could not find description about TLS alert in JSSE document, so I wrote simple TLS server and client and experiment with expired server certificate.
On client side, SSLSocket throw "SSLPeerUnverifiedException: peer not authenticated" at connect.
Howerver, my server doesn't throw any exception on accept.
Question:
1. Does SSLSocket(client) send TLS alert (certificate_expired) to server on above situation?
2. Are there anyway to detect TLS alert on JSSE server application?
Best regards,

Thanks.
My server set socket timeout after accept, and then setSoTimeout was failed beucase that the peer socket had been shutdowned.
So I comment it out and read the socket just after accept.
Now the server code throws:
javax.net.ssl.SSLException: Connection has been shutdown:
javax.net.ssl.SSLHandshakeException: Received fatal alert: certificate_unknown
So the TLS stack (may) received certificate_unknown alert.
But I wonder why JSSE stack on client side "certificate_unknown" alert, rather than "certificate_expired".
According to RFC,
certificate_expired
       A certificate has expired or is not currently valid.
certificate_unknown
       Some other (unspecified) issue arose in processing the
       certificate, rendering it unacceptable.

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