// Copyright 2017 Google Inc.
//
// 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 codeu.chat.util;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.text.SimpleDateFormat;
import java.util.Date;

public final class Time implements Comparable<Time> {

	public static final Serializer<Time> SERIALIZER = new Serializer<Time>() {

		@Override
		public void write(OutputStream out, Time value) throws IOException {

			Serializers.LONG.write(out, value.inMs());

		}

		@Override
		public Time read(InputStream in) throws IOException {

			return Time.fromMs(Serializers.LONG.read(in));

		}
	};

	private static final SimpleDateFormat formatter =
			new SimpleDateFormat("dd-MMM-yyyy HH:mm:ss.SSS");

	private final Date date;

	private Time(long totalMs) { this.date = new Date(totalMs); }

	public long inMs() { return date.getTime(); }

	@Override
	public int compareTo(Time other) {
		return date.compareTo(other.date);
	}

	public boolean inRange(Time start, Time end) {
		return this.compareTo(start) >= 0 && this.compareTo(end) <= 0;
	}

	@Override
	public String toString() {
		return formatter.format(date);
	}

	public static Time fromMs(long ms) { return new Time(ms); }

	public static Time now() { return Time.fromMs(System.currentTimeMillis()); }
	
	//converts a period in ms to hours, minutes, and seconds 
	public static long[] convertHMS(long ms){
		long hours = ms/1000/60/60; 
		long mins = (ms - hours*1000*60*60)/1000/60; 
		long secs = (ms - hours*1000*60*60 - mins*1000*60)/1000;
		long[] converted = {hours, mins, secs}; 
		return converted; 
	}


}

// Copyright 2017 Google Inc.
//
// 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 codeu.chat.util;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.text.SimpleDateFormat;
import java.util.Date;

public final class Time implements Comparable<Time> {

	public static final Serializer<Time> SERIALIZER = new Serializer<Time>() {

		@Override
		public void write(OutputStream out, Time value) throws IOException {

			Serializers.LONG.write(out, value.inMs());

		}

		@Override
		public Time read(InputStream in) throws IOException {

			return Time.fromMs(Serializers.LONG.read(in));

		}
	};

	private static final SimpleDateFormat formatter =
			new SimpleDateFormat("dd-MMM-yyyy HH:mm:ss.SSS");

	private final Date date;

	private Time(long totalMs) { this.date = new Date(totalMs); }

	public long inMs() { return date.getTime(); }

	@Override
	public int compareTo(Time other) {
		return date.compareTo(other.date);
	}

	public boolean inRange(Time start, Time end) {
		return this.compareTo(start) >= 0 && this.compareTo(end) <= 0;
	}

	@Override
	public String toString() {
		return formatter.format(date);
	}

	//time in just hours and minutes
  	public final String HMtime() {
  		return formatter.format(date).substring(12,17);
  	} 

	public static Time fromMs(long ms) { return new Time(ms); }

	public static Time now() { return Time.fromMs(System.currentTimeMillis()); }
	
	//converts a period in ms to hours, minutes, and seconds 
	public static long[] convertHMS(long ms){
		long hours = ms/1000/60/60; 
		long mins = (ms - hours*1000*60*60)/1000/60; 
		long secs = (ms - hours*1000*60*60 - mins*1000*60)/1000;
		long[] converted = {hours, mins, secs}; 
		return converted; 
	}


}

Update Time.java