@startuml
skinparam classAttributeIconSize 0
abstract class Property {
    -id: String
    -address: String
    -price: String
    +<<constructor>> Property(id: String, address: String, price: String)
    +toString(): String
    +setId(newId: String)
    +getId(): String
    +setAddress(newAddress: String)
    +getAddress(): String
    +setPrice(price: String)
    +getPrice(): String
}

skinparam classAttributeIconSize 0
class CommercialProperty {
    -id: String
    -address: String
    -price: String
    -zone: String
    -units: Integer
    -parkingSpots: Integer
    +<<constructor>> CommercialProperty(id: String, address: String, price: String, zone: String, units: Integer, parkingSpots: Integer)
    +setZone(newZone: String)
    +getZone(): String
    +setUnits(newUnits: Integer)
    +getUnits(): Integer
    +setParkingSpots(newParkingSpots: Integer)
    +getParkingSpots(): Integer
}

skinparam classAttributeIconSize 0
class ResidentialProperty {
    -id: String
    -address: String
    -price: String
    -hoaFees: Double
    -bedrooms: Double
    -bathrooms: Double
    +<<constructor>> ResidentialProperty(id: String, address: String, price: String, hoaFees: Double, bedrooms: Double, bathrooms: Double)
    +getHoaFees(): Double
    +setHoaFees(newHoaFees: Double)
    +getBedrooms(): Double
    +setBedrooms(newBedrooms: Double)
    +getBedrooms(): Double
    +getBathrooms(): Double
    +setBathrooms(newBathrooms: Double)
}

skinparam classAttributeIconSize 0
class Listing {
    -properties: ArrayList<Property>
    +setProperties(newProperties: ArrayList<Property>)
    +getProperties(): ArrayList<Property>
    +loadProperties(): Listing
    +getProperty(address: String): Property
}

skinparam classAttributeIconSize 0
class MainActivity {
    #onCreate(savedInstanceState: Bundle)
}

CommercialProperty -u-|> Property
ResidentialProperty -u-|> Property
Listing *-d- Property
MainActivity .d.|> Listing
@enduml