Loose Coupling

LooseCouplingChoice1.txt

@startuml
package "couche 1" <<Rect>> {
 Observable <|-- A
}

package "couche 2" <<Rect>> {
  Interface Observable  
  B -> A
}
@enduml

LooseCouplingChoice2.txt

@startuml
package couche2 <<Rect>> {
 B -> couche1.Observable
}

package couche1 <<Rect>> {
 Interface Observable
 couche1.Observable <|- couche1.A 
}
@enduml

LooseCouplingChoice3.txt

@startuml
package couche2 <<Rect>> {
  Interface Observable
  Class B
  B -> Observable
  Observable <|- couche1.A
  couche1.A -> B
}

package couche1 <<Rect>> {
}
@enduml