How to compare two dates along with time in java

An Alternative is....

Convert both dates into milliseconds as below

Date d = new Date();
long l = d.getTime();

Now compare both long values

Since Date implements Comparable<Date>, it is as easy as:

date1.compareTo(date2);

As the Comparable contract stipulates, it will return a negative integer/zero/positive integer if date1 is considered less than/the same as/greater than date2 respectively (ie, before/same/after in this case).

Note that Date has also .after() and .before() methods which will return booleans instead.