Persisting dates and times in BlackBerry

Apparently neither java.util.Date nor java.util.Calendar i开发者_如何转开发mplement Persistable, so cannot be used in Persistable classes. What is the best alternative for persisting dates and times?

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You could write your code to expect that dates and times are kept in the Unix epoch format (number of seconds since 1/1/1970). Then your problem is simply a matter of storing a long number.

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storing as a long as Dan mentions is the way to go. System.currentTimeMillis() will return milliseconds since Unix Epoch, which is 1/1/1970 GMT. It's obviously fairly trivial to convert between seconds and milliseconds. For timezone corrections, the Calendar class can help you handle this.

Note:

getInstance(Timezone zone)
getTimeInMillis()
setTimeInMillis(long millis)
setTimeZone(Timezone value)