content: /**
   * 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.
   */
  package org.apache.activemq.util;
  
  import java.text.DecimalFormat;
  import java.text.DecimalFormatSymbols;
  import java.text.NumberFormat;
  import java.util.Locale;
  
  /**
   * Time utilities.
   */
  public final class TimeUtils {
  
      private TimeUtils() {
      }
  
      /**
       * Prints the duration in a human readable format as X days Y hours Z minutes etc.
       *
       * @param uptime the up-time in milliseconds
       *
       * @return the time used for displaying on screen or in logs
       */
      public static String printDuration(double uptime) {
          // Code taken from Karaf
          // https://svn.apache.org/repos/asf/karaf/trunk/shell/commands/src/main/java/org/apache/karaf/shell/commands/impl/InfoAction.java
  
          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;
      }
  }
  