Is this an accurate for a singleton pattern of the GOF

Parking ServicesFactory

Instance: ServicesFactory

ULM notation: underlined attribute or method

indicates static

member than an instance member ScannerAdapter

PaymentAdapter Singleton static attribute

VerificationAdapter

getInstance: ServicesFactory

getRateAdapter ()

getTimeAdapter () Singleton static method

getReceipAdapter ()

//static method

Public static synchronized ServicesFactory getInstance

{

If (instance==null)

Instance =new ServicesFactory ()

Return instance

}