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Core functionality used by all other modules.

There is a newer version: 3.1.0

/**
 * Copyright (C) 2012 - 2013 Xeiam LLC http://xeiam.com
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of
 * this software and associated documentation files (the "Software"), to deal in
 * the Software without restriction, including without limitation the rights to
 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
 * of the Software, and to permit persons to whom the Software is furnished to do
 * so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
package com.xeiam.xchange.utils;

import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.TimeZone;

/**
 * 
 * Utilities to provide the following to application:
 * 
 * 
 * Provision of standard date and time handling
 * 
 */
public class DateUtils {

  /**
   * private Constructor
   */
  private DateUtils() {

  }

  /**
   * Creates a Date instance for this instant in the UTC timezone
   * 
   * @return the Date instance
   */
  public static Date nowUtc() {

    return new Date();
  }

  /**
   * Creates a date from a long representing milliseconds from epoch
   * 
   * @param millisecondsFromEpoch
   * @return the Date object
   */
  public static Date fromMillisUtc(long millisecondsFromEpoch) {

    return new Date(millisecondsFromEpoch);
  }

  /**
   * Converts a date to a UTC String representation
   * 
   * @param date
   * @return the formatted date
   */
  public static String toUTCString(Date date) {

    SimpleDateFormat sd = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss z");
    sd.setTimeZone(TimeZone.getTimeZone("GMT"));
    return sd.format(date);
  }
}