find Day of Year in Java

import java.util.Calendar;

public class DayOfYear {

    public static void main(String[] args) {
        Calendar ca1 = Calendar.getInstance();

        /*
        set(int year, int month, int date)
        Jan=0,Feb=1,Mar=2...
        */
        ca1.set(2009,4,22);

        /*
        2 Feb 2009, Day of Year, Jan 31 + 2 Feb =33 day of year
        */

        int DAY_OF_YEAR=ca1.get(Calendar.DAY_OF_YEAR);
        System.out.println("Day of Year :"+DAY_OF_YEAR);

        // More Calendar Date option can check
        /*
        int DAY_OF_MONTH=ca1.get(Calendar.DAY_OF_MONTH);
        int DAY_OF_WEEK=ca1.get(Calendar.DAY_OF_WEEK);
        int WEEK_OF_MONTH=ca1.get(Calendar.WEEK_OF_MONTH);
        int WEEK_OF_YEAR=ca1.get(Calendar.WEEK_OF_YEAR);
         */
    }
}