java - 如何区分两个 JodaTime LocalTime 时间戳？

Question

我正在使用 JodaTime LocalTime为了指定时间。如何获得两次之间的分钟数差异？

LocalTime startT = new LocalTime(6,30);
LocalTime endT = new LocalTime(12,15);

// LocalTime duration = this.endT.minusMinutes(startT);
// int durationMinutes = duration.getMinutes();

Answer 1

如果你问

How can I get the difference in minutes between two times?

然后我会想到以下更直观的解决方案:

LocalTime startT = new LocalTime(6,30);
LocalTime endT = new LocalTime(12,15);
int minutes = Minutes.minutesBetween(startT, endT).getMinutes(); // 345m = 6h - 15m

表达式

Period.fieldDifference(startT, endT).getMinutes()

只会产生 -15，这意味着不考虑时差，因此不会将小时转换为分钟。如果第二个表达式确实是您想要的，那么问题应该是这样的:

如何获得两个 LocalTime 实例的分钟部分之间的差异？

针对 Java-8 更新:

LocalTime startT = LocalTime.of(6,30);
LocalTime endT = LocalTime.of(12,15);

long minutes = ChronoUnit.MINUTES.between(startT, endT);

System.out.println(minutes); // output: 345

// Answer to a recommendation in a comment:
// Attention JSR-310 has no typesafety regarding units (a bad design choice)
// => UnsupportedTemporalTypeException: Unsupported unit: Minutes
minutes = Duration.between(startT, endT).get(ChronoUnit.MINUTES);