java.time.temporal.ChronoUnit#FOREVER源码实例Demo

@Override
public ChronoUnit fromString(@NotNull final String input) {
	checkArgument(StringUtils.isNotBlank(input));

	if ("Nanos".equalsIgnoreCase(input) || "Nano".equalsIgnoreCase(input)) {
		return ChronoUnit.NANOS;
	}

	if ("Micros".equalsIgnoreCase(input) || "Micro".equalsIgnoreCase(input)) {
		return ChronoUnit.MICROS;
	}

	if ("Millis".equalsIgnoreCase(input) || "Milli".equalsIgnoreCase(input)) {
		return ChronoUnit.MILLIS;
	}

	if ("Seconds".equalsIgnoreCase(input) || "Second".equalsIgnoreCase(input)) {
		return ChronoUnit.SECONDS;
	}

	if ("Minutes".equalsIgnoreCase(input) || "Minute".equalsIgnoreCase(input)) {
		return ChronoUnit.MINUTES;
	}

	if ("Hours".equalsIgnoreCase(input) || "Hour".equalsIgnoreCase(input)) {
		return ChronoUnit.HOURS;
	}

	if ("HalfDays".equalsIgnoreCase(input) || "HalfDay".equalsIgnoreCase(input)) {
		return ChronoUnit.HALF_DAYS;
	}

	if ("Days".equalsIgnoreCase(input) || "Day".equalsIgnoreCase(input)) {
		return ChronoUnit.DAYS;
	}

	if ("Weeks".equalsIgnoreCase(input) || "Week".equalsIgnoreCase(input)) {
		return ChronoUnit.WEEKS;
	}

	if ("Months".equalsIgnoreCase(input) || "Month".equalsIgnoreCase(input)) {
		return ChronoUnit.MONTHS;
	}

	if ("Years".equalsIgnoreCase(input) || "Year".equalsIgnoreCase(input)) {
		return ChronoUnit.YEARS;
	}

	if ("Decades".equalsIgnoreCase(input) || "Decade".equalsIgnoreCase(input)) {
		return ChronoUnit.DECADES;
	}

	if ("Centuries".equalsIgnoreCase(input) || "Century".equalsIgnoreCase(input)) {
		return ChronoUnit.CENTURIES;
	}

	if ("Millennia".equalsIgnoreCase(input)) {
		return ChronoUnit.MILLENNIA;
	}

	if ("Eras".equalsIgnoreCase(input) || "Era".equalsIgnoreCase(input)) {
		return ChronoUnit.ERAS;
	}

	if ("Forever".equalsIgnoreCase(input)) {
		return ChronoUnit.FOREVER;
	}

	throw new InvalidInputException(input + " is not a valid ChronoUnit");
}
 

@Override
public TemporalUnit getRangeUnit(){
	return ChronoUnit.FOREVER;
}