Certificate is not yet valid exception. This is thrown whenever the current {@code Date} or the specified {@code Date}is before the {@code notBefore} date/time in the Certificatevalidity period.
Note: The classes in the package {@code javax.security.cert}exist for compatibility with earlier versions of the Java Secure Sockets Extension (JSSE). New applications should instead use the standard Java SE certificate classes located in {@code java.security.cert}.
@since 1.4
@author Hemma Prafullchandra