您可以更改默认格式符号以包含月份的罗马数字
DateFormatSymbols symbols = DateFormatSymbols.getInstance();
final String[] romanMonths = {"I", "II", "III", "IV", "V", "VI", "VII", "VIII", "IX", "X", "XI", "XII"};
symbols.setMonths(romanMonths);
SimpleDateFormat formatter = new SimpleDateFormat("dd MMMM yy", symbols);
System.out.println("My date " + formatter.parse("05 X 02"));
Here http://docs.oracle.com/javase/tutorial/i18n/format/dateFormatSymbols.html是一个关于如何使用自定义格式符号的很好的教程。
您可以选择通过更改任一短月份setShortMonths()
或整月通过setMonths()
UPDATE:这是一个版本日期时间格式化程序生成器 https://docs.oracle.com/javase/8/docs/api/java/time/format/DateTimeFormatterBuilder.html从JDK8开始
static final ImmutableMap<Long, String> ROMAN_MONTHS = ImmutableMap.<Long, String>builder()
.put(1L, "I").put(2L, "II").put(3L, "III").put(4L, "IV").put(5L, "V")
.put(6L, "VI").put(7L, "VII").put(8L, "VIII").put(9L, "IX").put(10L, "X")
.put(11L, "XI").put(12L, "XII").build();
DateTimeFormatter formatter = new DateTimeFormatterBuilder()
.appendValue(ChronoField.DAY_OF_MONTH, 1, 2, SignStyle.NORMAL)
.appendLiteral(' ')
.appendText(ChronoField.MONTH_OF_YEAR, ROMAN_MONTHS)
.appendLiteral(' ')
.appendValue(ChronoField.YEAR, 4)
.toFormatter();
System.out.println("My date " + formatter.parse("5 X 2012"));