File list (Check if you may need any files):
ObserverSample
..............\build
..............\build.xml
..............\.....\classes
..............\.....\.......\observersample
..............\.....\.......\..............\TempLight.class
..............\.....\.......\..............\TempMeter.class
..............\.....\.......\..............\TempSensor.class
..............\manifest.mf
..............\nbproject
..............\.........\build-impl.xml
..............\.........\genfiles.properties
..............\.........\private
..............\.........\.......\private.properties
..............\.........\.......\private.xml
..............\.........\project.properties
..............\.........\project.xml
..............\src
..............\...\observersample
..............\...\..............\TempLight.java
..............\...\..............\TempMeter.java
..............\...\..............\TempSensor.java