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For example given a java.util.Date how could I test if the time was before 12.30 PM that day?
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public boolean before(Date dt) The before() method is used to check if a given date is before another given date. Return Value: true if and only if the instant of time represented by this Date object is strictly earlier than the instant represented by when; false otherwise.
We can use the simple isBefore , isAfter and isEqual to check if a date is within a certain date range; for example, the below program check if a LocalDate is within the January of 2020. startDate : 2020-01-01 endDate : 2020-01-31 testDate : 2020-01-01 testDate is within the date range.
In Java, two dates can be compared using the compareTo() method of Comparable interface. This method returns '0' if both the dates are equal, it returns a value "greater than 0" if date1 is after date2 and it returns a value "less than 0" if date1 is before date2.
DateFormat getTimeZone() Method in Java with ExamplesThe getTimeZone() method in DateFormat class is used to return the current time-zone of the calendar of this DateFormat. Parameters: The method does not take any parameters. Return Value: The method returns timezone associated with the calendar of DateFormat.
Have a look at Calendar.before() Method.
Calendar now = Calendar.getInstance();
now.set(Calendar.HOUR_OF_DAY, 12);
now.set(Calendar.MINUTE, 30);
Calendar givenDate = Calendar.getInstance();
givenDate.setTime(yourDate);
boolean isBefore = now.before(givenDate);
This works. It does the check using only the hour and minute portions of your date:
Date yourDate;
Calendar calendar = Calendar.getInstance();
calendar.setTime(yourDate);
boolean before = calendar.get(Calendar.HOUR) * 60 + calendar.get(Calendar.MINUTE) < 12 * 60 + 30;
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