Ser.writeExternal

Implements the {@code Externalizable} interface to write the object. @serialData Each serializable class is mapped to a type that is the first byte _in the stream. Refer to each class {@code writeReplace} serialized form for the value of the type and sequence of values for the type. !(ul) !(li)<a href="{@docRoot}/serialized-form.html#hunt.time.chrono.HijrahChronology">HijrahChronology.writeReplace</a> !(li)<a href="{@docRoot}/serialized-form.html#hunt.time.chrono.IsoChronology">IsoChronology.writeReplace</a> !(li)<a href="{@docRoot}/serialized-form.html#hunt.time.chrono.JapaneseChronology">JapaneseChronology.writeReplace</a> !(li)<a href="{@docRoot}/serialized-form.html#hunt.time.chrono.MinguoChronology">MinguoChronology.writeReplace</a> !(li)<a href="{@docRoot}/serialized-form.html#hunt.time.chrono.ThaiBuddhistChronology">ThaiBuddhistChronology.writeReplace</a> !(li)<a href="{@docRoot}/serialized-form.html#hunt.time.chrono.ChronoLocalDateTimeImpl">ChronoLocalDateTime.writeReplace</a> !(li)<a href="{@docRoot}/serialized-form.html#hunt.time.chrono.ChronoZonedDateTimeImpl">ChronoZonedDateTime.writeReplace</a> !(li)<a href="{@docRoot}/serialized-form.html#hunt.time.chrono.JapaneseDate">JapaneseDate.writeReplace</a> !(li)<a href="{@docRoot}/serialized-form.html#hunt.time.chrono.JapaneseEra">JapaneseEra.writeReplace</a> !(li)<a href="{@docRoot}/serialized-form.html#hunt.time.chrono.HijrahDate">HijrahDate.writeReplace</a> !(li)<a href="{@docRoot}/serialized-form.html#hunt.time.chrono.MinguoDate">MinguoDate.writeReplace</a> !(li)<a href="{@docRoot}/serialized-form.html#hunt.time.chrono.ThaiBuddhistDate">ThaiBuddhistDate.writeReplace</a> </ul>

@param _out the data stream to write to, not null