eml.studio.client.util.TimeUtils.java Source code

Introduction

Here is the source code for eml.studio.client.util.TimeUtils.java

Source

/**
 * Copyright 2017 Institute of Computing Technology, Chinese Academy of Sciences.
 * Licensed under the terms of the Apache 2.0 license.
 * Please see LICENSE file in the project root for terms
 */
package eml.studio.client.util;

import com.google.gwt.i18n.client.DateTimeFormat;
import com.google.gwt.i18n.client.NumberFormat;

import java.util.Date;
import java.util.logging.Logger;

/**
 * Time format tool
 */
public class TimeUtils {

    private static Logger logger = Logger.getLogger(TimeUtils.class.getName());
    private static DateTimeFormat dateFormat = DateTimeFormat.getFormat("yyyy-MM-dd HH:mm:ss");

    public static String timeDiff(Date date1, Date date2) {
        if (date1 == null || date2 == null)
            return "";
        long nh = 1000 * 60 * 60;
        long nm = 1000 * 60;
        long ns = 1000;
        try {
            long diff = date2.getTime() - date1.getTime();

            // gap of hour
            long hour = diff / nh;
            // gap of min
            long min = diff % nh / nm;
            // gap of sec
            long sec = diff % nh % nm / ns;
            String res = NumberFormat.getFormat("#00").format(hour) + ":"
                    + NumberFormat.getFormat("#00").format(min) + ":" + NumberFormat.getFormat("#00").format(sec);
            return res;
        } catch (IllegalArgumentException ex) {
            return null;
        }
    }

    /**
     * Format the time now
     * @return
     */
    public static String timeNow() {
        Date dateNow = new Date();
        String dateNowStr = dateFormat.format(dateNow);
        return dateNowStr;
    }

    /**
     * Convert Date to time string
     * @param date target date
     * @return time string
     */
    public static String format(Date date) {
        if (date == null)
            return "";
        return dateFormat.format(date);
    }
}