Java Date comparison (compareTo)

A date type in the database is date, and this type only displays the month and day, for hours, minutes, seconds, milliseconds, is 0;

When we want to compare dates with the current system time and date in the database, if we compare a date before or after the current date, you can return a Boolean type using the After or before method, but if you want to compare whether the two dates are equal, It is necessary to pay attention to the current system time hours, minutes, seconds, milliseconds, are set to 0, can be compared successfully, specifically with the CompareTo method, this method returns the int type, the return value is -1,0,1, respectively, than a certain date, after, equal.

Java Date comparison (compareTo)