Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
//License from project: Apache License 

import java.util.Calendar;
import java.util.Date;

public class Main {
    /**
     * Calculates the current day of the year and returns an int
     * @return Day - Day of the year. No time info.
     */
    public static int getCurrentDay() {
        return Calendar.getInstance().get(Calendar.DAY_OF_YEAR);
    }

    /**
     * Same as the getCurrentDay() method but uses the passed in argument
     * as a long milliseconds timestamp to calculate vs a day object
     * @parma timestamp This is the time (in milliseconds from the epoch date)
     * used to calculate the current day of the year. (IE 365 = Dec 31st)
     * @return Day Day of the year based on timestamp.
     */
    public static Integer getCurrentDay(long timestamp) {
        Calendar cal = Calendar.getInstance();
        cal.setTimeInMillis(timestamp);
        return cal.get(Calendar.DAY_OF_YEAR);
    }

    /**
     * Returns the day of the year (IE 365 = Dec 31st)
     * @param date This is the date to use to calculate the day of the year
     * @return Day - Day of the year based on date.
     */
    public static Integer getCurrentDay(Date date) {
        Calendar cal = Calendar.getInstance();
        if (date != null)
            cal.setTime(date);
        return cal.get(Calendar.DAY_OF_YEAR);
    }
}