Perancangan Perangkat Lunak Menggunakan Design Pattern

Menggunakan Observer Pattern di weather program. weather program adalah program yang akan menampilkan keadaan cuaca dan memberikan pemberitahuan mengenai cuaca yang ada. Dengan beberapa variabel yang akan menentukan cuaca yang akan terjadi.

1. CurrentConditionsDisplay.java


2. DisplayElement.java
3. ForecastDisplay.java
4. HeatIndexDisplay.java


5. Observer.java

6. StatisticDisplay.java
7. Subject.java

8. WeatherData.java

9. WeatherStation.java


10. WeatherStationHeatIndex.java


Hasil

• Current conditions: 80.0F degrees and 65.0% humidity
  Avg/Max/Min temperature = 80.0/80.0/80.0
  Forecast: Improving weather on the way!
  Heat index is 82.95535
  Current conditions: 82.0F degrees and 70.0% humidity
  Avg/Max/Min temperature = 81.0/82.0/80.0
  Forecast: Watch out for cooler, rainy weather
  Heat index is 86.90124
  Current conditions: 78.0F degrees and 90.0% humidity
  Avg/Max/Min temperature = 80.0/82.0/78.0
  Forecast: More of the same
  Heat index is 83.64967
  

Referensi:
https://github.com/bethrobson/Head-First-Design-Patterns/tree/master/src/headfirst/designpatterns/observer/weather