Java Duration printDuration(double uptime)

Description

Prints the duration in a human readable format as X days Y hours Z minutes etc.

License

Apache License

Parameter

Parameter	Description
uptime	the uptime in millis

Return

the time used for displaying on screen or in logs

Declaration

public static String printDuration(double uptime) 

Method Source Code

//package com.java2s;
/**//www  . j  ava  2s  . c  o  m
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.
 */

import java.text.DecimalFormat;
import java.text.DecimalFormatSymbols;
import java.text.NumberFormat;
import java.util.Locale;

public class Main {
    /**
     * Prints the duration in a human readable format as X days Y hours Z minutes etc.
     *
     * @param uptime
     *        the uptime in millis
     * @return the time used for displaying on screen or in logs
     */
    public static String printDuration(double uptime) {

        NumberFormat fmtI = new DecimalFormat("###,###", new DecimalFormatSymbols(Locale.ENGLISH));
        NumberFormat fmtD = new DecimalFormat("###,##0.000", new DecimalFormatSymbols(Locale.ENGLISH));

        uptime /= 1000;
        if (uptime < 60) {
            return fmtD.format(uptime) + " seconds";
        }
        uptime /= 60;
        if (uptime < 60) {
            long minutes = (long) uptime;
            String s = fmtI.format(minutes) + (minutes > 1 ? " minutes" : " minute");
            return s;
        }
        uptime /= 60;
        if (uptime < 24) {
            long hours = (long) uptime;
            long minutes = (long) ((uptime - hours) * 60);
            String s = fmtI.format(hours) + (hours > 1 ? " hours" : " hour");
            if (minutes != 0) {
                s += " " + fmtI.format(minutes) + (minutes > 1 ? " minutes" : " minute");
            }
            return s;
        }
        uptime /= 24;
        long days = (long) uptime;
        long hours = (long) ((uptime - days) * 24);
        String s = fmtI.format(days) + (days > 1 ? " days" : " day");
        if (hours != 0) {
            s += " " + fmtI.format(hours) + (hours > 1 ? " hours" : " hour");
        }
        return s;
    }
}

Related

1. roundedRelativeFormat()