TimeUtil.java Source code

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Here is the source code for TimeUtil.java

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/**
 * Copyright (c) 2006 Richard Rodgers
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

//package com.monad.homerun.util;

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

/**
 * TimeUtil is a utility class with static methods to convert times in various
 * formats into other formats
 */

public class TimeUtil {
    private static final int MINS_PER_DAY = 60 * 24;
    private static final long MS_PER_DAY = 1000 * 60 * MINS_PER_DAY;

    private static final int SEC = 1000;
    private static final int MIN = SEC * 60;
    private static final int HOUR = MIN * 60;
    private static final int DAY = HOUR * 24;
    private static final long WEEK = DAY * 7;
    private static final long YEAR = WEEK * 52;

    private static final long[] buckets = { YEAR, WEEK, DAY, HOUR, MIN, SEC };
    private static final String[] bucketNames = { "year", "week", "day", "hour", "minute", "second" };

    private static GregorianCalendar statFmtCal = new GregorianCalendar();

    private static final String ts24Pat = "H:mm:ss yy-MM-dd";

    // convert milliseconds into the month of the year string
    public static String monthStringFormat(long msecs) {
        GregorianCalendar cal = new GregorianCalendar();

        cal.setTime(new Date(msecs));

        return monthStringFormat(cal.get(Calendar.MONTH));
    }

    // convert milliseconds into a short day of the week string
    public static String shortDayStringFormat(long msecs) {
        String fmt = dayStringFormat(msecs);
        return fmt.substring(0, 3);
    }

    // convert milliseconds into the day of the week string
    public static String dayStringFormat(long msecs) {
        GregorianCalendar cal = new GregorianCalendar();

        cal.setTime(new Date(msecs));

        int dow = cal.get(Calendar.DAY_OF_WEEK);

        switch (dow) {
        case Calendar.MONDAY:
            return "Monday";
        case Calendar.TUESDAY:
            return "Tuesday";
        case Calendar.WEDNESDAY:
            return "Wednesday";
        case Calendar.THURSDAY:
            return "Thursday";
        case Calendar.FRIDAY:
            return "Friday";
        case Calendar.SATURDAY:
            return "Saturday";
        case Calendar.SUNDAY:
            return "Sunday";
        }

        return "Unknown";
    }
}