DateTimeZoneBuilder itself is mutable and not thread-safe, but the DateTimeZone objects that it builds are thread-safe and immutable.
It is intended that {@link ZoneInfoCompiler} be used to read time zone datafiles, indirectly calling DateTimeZoneBuilder. The following complex example defines the America/Los_Angeles time zone, with all historical transitions:
DateTimeZone America_Los_Angeles = new DateTimeZoneBuilder() .addCutover(-2147483648, 'w', 1, 1, 0, false, 0) .setStandardOffset(-28378000) .setFixedSavings("LMT", 0) .addCutover(1883, 'w', 11, 18, 0, false, 43200000) .setStandardOffset(-28800000) .addRecurringSavings("PDT", 3600000, 1918, 1919, 'w', 3, -1, 7, false, 7200000) .addRecurringSavings("PST", 0, 1918, 1919, 'w', 10, -1, 7, false, 7200000) .addRecurringSavings("PWT", 3600000, 1942, 1942, 'w', 2, 9, 0, false, 7200000) .addRecurringSavings("PPT", 3600000, 1945, 1945, 'u', 8, 14, 0, false, 82800000) .addRecurringSavings("PST", 0, 1945, 1945, 'w', 9, 30, 0, false, 7200000) .addRecurringSavings("PDT", 3600000, 1948, 1948, 'w', 3, 14, 0, false, 7200000) .addRecurringSavings("PST", 0, 1949, 1949, 'w', 1, 1, 0, false, 7200000) .addRecurringSavings("PDT", 3600000, 1950, 1966, 'w', 4, -1, 7, false, 7200000) .addRecurringSavings("PST", 0, 1950, 1961, 'w', 9, -1, 7, false, 7200000) .addRecurringSavings("PST", 0, 1962, 1966, 'w', 10, -1, 7, false, 7200000) .addRecurringSavings("PST", 0, 1967, 2147483647, 'w', 10, -1, 7, false, 7200000) .addRecurringSavings("PDT", 3600000, 1967, 1973, 'w', 4, -1, 7, false, 7200000) .addRecurringSavings("PDT", 3600000, 1974, 1974, 'w', 1, 6, 0, false, 7200000) .addRecurringSavings("PDT", 3600000, 1975, 1975, 'w', 2, 23, 0, false, 7200000) .addRecurringSavings("PDT", 3600000, 1976, 1986, 'w', 4, -1, 7, false, 7200000) .addRecurringSavings("PDT", 3600000, 1987, 2147483647, 'w', 4, 1, 7, true, 7200000) .toDateTimeZone("America/Los_Angeles", true);
@author Brian S O'Neill
@see ZoneInfoCompiler
@see ZoneInfoProvider
@since 1.0
| |
| |