The before() method of Java Date class tests whether the date is before the specified date or not.
public boolean before(Date when)
Parameters: The function accepts a single parameter when which specifies the date that has to be checked.
Return Value: It returns a Boolean value. It will return true if this date is before the specified date otherwise false.
Exception: The function throws a single exception that is NullPointerException if when is null.
Program below demonstrates the above mentioned function:
Date 1: Thu Dec 05 08:15:01 UTC 1996 Date 2: Wed Jan 02 08:15:01 UTC 2019 Is Date 2 before Date 1: false
Date 1: Wed Jan 02 08:15:06 UTC 2019 Date 1: null On checking these 2 dates: Exception: java.lang.NullPointerException
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