Handling time ranges in Java

Question

I have a variable Date someDate = new Date(0) that starts at the Unix Epoch and is incremented. I need to test whether the time of someDate is currently between 0000 and 1200 hours. Essentially I need to be able to compare a Date object with a time range.

Is there a way to do this in Java, or do I need to roll my own or use something like Joda-Time?

This is for a simulation, so someDate is not incremented in real time. A timer waits a set interval and then adds some other number of seconds to someDate. — John
– John, Commented Nov 20, 2013 at 0:04

score 1 · Accepted Answer · 2013-11-20 00:13:37Z

1

You can use a Calendar. See this:

Calendar c = Calendar.getInstance(); c.setTime(someDate); int hour = c.get(Calendar.HOUR_OF_DAY); if (hour < 12) { // 0 <= hour < 12 }

edited Nov 20, 2013 at 0:13

answered Nov 20, 2013 at 0:08

user2030471

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1 Comment

John Over a year ago

Thanks! Not as elegant as I was hoping for, but easier than dragging in another library.

benjamin.d · Accepted Answer · 2013-11-19 23:53:30Z

0

You could actually use Joda time, but if you just want to compare dates, you could just use the compareTo method from the Date java class, javadoc here

answered Nov 19, 2013 at 23:53

benjamin.d

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1 Comment

John Over a year ago

I don't want to compare dates, only the time of day.

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