Created a blank Java project using Maven.
Changed the version of JUnit to be 4.11.
Added test class HotelWorldClockTest.
Added test WHEN_BeijingIsSetToNineOclock().
Added class CityClock and BeijingClock.
Added class LondonClock, MoscowClock, NewYorkClock and SydneyClock.
Renamed "localTime" to be "utcOffset".
Added method CityClock.setLocalTime().
Added assertions for all other city clocks.
Updated the test WHEN_BeijingIsSetToNineOclock() with DeskClerk class.
Instantiated class DeskClerk in the test WHEN_BeijingIsSetToNineOclock().
Created class DeskClerk.
Added method DeskClerk.addCityClock().
Added field cities in class DeskClerk and initialized it with a blank hash map.
Added method DeskClerk.setLocalTimeToCityClock().
Added method DeskClerk.getCityClock().
Made the test WHEN_BeijingIsSetToNineOclock() green.
Added the test WHEN_LondonIsSetToFiveOclock().
Made all tests green.
Added expected method call notifyAllCityClocks() in DeskClerk.setLocalTimeToCityClock().