需求
“Create a UML class diagram for a PaymentProcessor that uses a PaymentStrategy interface with credit card, PayPal and bank transfer implementations.”
接著試試Add a WalletPayment strategy.Add a refund method to PaymentProcessor.
這張圖裡有什麼
看懂背後的決策。
01
Define a PaymentStrategy interface with a pay method
02
Implement concrete strategy classes for each payment method
03
Use context class PaymentProcessor to delegate to strategy
When a system requires different algorithms or behaviors that can be selected at runtime, such as multiple payment gateways.