Java 计算时间差值分钟、

秒、小时、天数的方法

Java中计算时间差值可以使用Java.util.Date和Java.util.Calendar类。以下是计算时间差值的示例代码：

1. 计算分钟差值

Date startDate = new Date(); // 开始时间
// do something...
Date endDate = new Date(); // 结束时间

long diffInMilliSeconds = endDate.getTime() - startDate.getTime();
long diffInMinutes = TimeUnit.MILLISECONDS.toMinutes(diffInMilliSeconds);

2. 计算秒差值

Date startDate = new Date(); // 开始时间
// do something...
Date endDate = new Date(); // 结束时间

long diffInMilliSeconds = endDate.getTime() - startDate.getTime();
long diffInSeconds = TimeUnit.MILLISECONDS.toSeconds(diffInMilliSeconds);

3. 计算小时差值

Date startDate = new Date(); // 开始时间
// do something...
Date endDate = new Date(); // 结束时间

long diffInMilliSeconds = endDate.getTime() - startDate.getTime();
long diffInHours = TimeUnit.MILLISECONDS.toHours(diffInMilliSeconds);

4. 计算天数差值

Calendar calendar1 = Calendar.getInstance();
Calendar calendar2 = Calendar.getInstance();
calendar1.setTime(startDate);
calendar2.setTime(endDate);

long diffInMilliSeconds = calendar2.getTimeInMillis() - calendar1.getTimeInMillis();
long diffInDays = TimeUnit.MILLISECONDS.toDays(diffInMilliSeconds);