Java generates random dates in the specified range

There is a need to construct a method to randomly generate any time point between 1990-12-31 00:00 and 2013-12-31 00:00:00. The idea is this: in the Java API, date type and long type are well transformed, so we can turn the problem into finding any value between the numbers of two long types. At the same time, you need to understand the Java API: math round(double) Math. random(); new Date(year,month,day); Calendar。

Math. Random() randomly generates random double types greater than or equal to 0 and less than 1.

Math. Round (double) needs to pass in a double type and return the long type closest to the double type.

Calendar is a tool class for processing time. Like date, calendar's month is calculated from 0

The specific codes are as follows

If you want to use the date class to process time, you should note that the year is calculated from 1900, so you need to subtract 1900, and the month is calculated from 0, so you need to subtract 1. For example, the date object obtained from new date (2013,10,10) represents the time of November 10, 3913.

The result is: mon Nov 10 00:00:00 CST 3913

Change the above problem slightly. Given mindate and maxdate, it is required to put each day in this time interval into the list.

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