Java 8 Time – How to Get the Current Hour with New Date-Time API in Java 8

javajava-8java-time

Before Java 8 the common method was the Calendar API:

Calendar cal = Calendar.getInstance();
int hour = cal.get(Calendar.HOUR_OF_DAY);

How can I get the current hour, but using the new Date-Time API provided in Java 8?

Best Answer

This all depends, but something like...

LocalTime now = LocalTime.now();
System.out.println(now.getHour());

Should work just fine...

Take a closer look at LocalTime#getHour for more details

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Java DateTime – How to Get Current Date and Time

Just construct a new Date object without any arguments; this will assign the current date and time to the new object.

import java.util.Date;

Date d = new Date();

In the words of the Javadocs for the zero-argument constructor:

Allocates a Date object and initializes it so that it represents the time at which it was allocated, measured to the nearest millisecond.

Make sure you're using java.util.Date and not java.sql.Date -- the latter doesn't have a zero-arg constructor, and has somewhat different semantics that are the topic of an entirely different conversation. :)

Best Answer

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Java DateTime – How to Get Current Date and Time

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