Converts a Date object into a string in 'Zulu' format - Java java.util

Java examples for java.util:Date Format

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Description

Converts a Date object into a string in 'Zulu' format

Demo Code


//package com.java2s;
import java.util.Calendar;
import java.util.Date;

public class Main {
    public static void main(String[] argv) throws Exception {
        Date d = new Date();
        System.out.println(dateToUTC(d));
    }//from  w  w w . java2  s .co m

    /**
     * Converts a <code>Date</code> object into a string in 'Zulu' format
     *
     * @param d
     *            A <code>Date</code> object to be converted into a string in
     *            'Zulu' format
     * @return A string representing the date contained in the passed
     *         <code>Date</code> object in 'Zulu' format (e.g.
     *         yyyyMMDDThhmmssZ)
     */
    public static String dateToUTC(Date d) {
        StringBuffer date = new StringBuffer();
        Calendar cal = Calendar.getInstance();
        cal.setTime(d);

        date.append(cal.get(Calendar.YEAR));

        date.append(printTwoDigits(cal.get(Calendar.MONTH) + 1))
                .append(printTwoDigits(cal.get(Calendar.DATE))).append("T");

        date.append(printTwoDigits(cal.get(Calendar.HOUR_OF_DAY)))
                .append(printTwoDigits(cal.get(Calendar.MINUTE)))
                .append(printTwoDigits(cal.get(Calendar.SECOND)))
                .append("Z");

        return date.toString();
    }

    /**
     * Returns a string representation of number with at least 2 digits
     */
    private static String printTwoDigits(int number) {
        if (number > 9) {
            return String.valueOf(number);
        } else {
            return "0" + number;
        }
    }
}

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