Handling weeks in Java 7 - Java Date Time

Java examples for Date Time:Calendar

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Description

Handling weeks in Java 7

Demo Code

import java.text.DateFormat;
import java.util.Calendar;
import java.util.SimpleTimeZone;

public class Main {

    public static void main(String[] args) {
        Calendar calendar = Calendar.getInstance();
        //www .j  a v  a 2s .  c o m
        if(calendar.isWeekDateSupported()) {
            System.out.println("Number of weeks in this year: " + calendar.getWeeksInWeekYear());
            System.out.println("Current week number: " + calendar.get(Calendar.WEEK_OF_YEAR));
        }

        calendar.setWeekDate(2012, 16, 3);
        System.out.println(DateFormat.getDateTimeInstance(
            DateFormat.LONG, DateFormat.LONG).format(calendar.getTime()));
        
        calendar.setWeekDate(2022, 1, 1);
        System.out.println(DateFormat.getDateTimeInstance(
            DateFormat.LONG, DateFormat.LONG).format(calendar.getTime()));

        SimpleTimeZone simpleTimeZone = new SimpleTimeZone(
                -21600000,
                     "CST",
                     Calendar.MARCH, 1, -Calendar.SUNDAY,
                     7200000,
                     Calendar.NOVEMBER, -1, Calendar.SUNDAY,
                     7200000,
                     3600000);
        System.out.println(simpleTimeZone.getDisplayName() + " - " +
                simpleTimeZone.observesDaylightTime());
        
    }
}

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