自助饮料售卖机UML类图

根据提供的两个引用，可以得出自助饮料售卖机的UML类图如下：

@startuml
class Customer {
    -name: String
    -money: Double
    -drinkName: String
    -coinType: String
    +insertCoin(): void
    +chooseDrink(drinkName: String): void
    +getDrinkPrice(drinkName: String): Double
    +getChange(): Double
}

class VendingMachine {
    -drinks: Map<String, Double>
    -coins: Map<String, Integer>
    +checkDrinkAvailability(drinkName: String): boolean
    +getDrinkPrice(drinkName: String): Double
    +updateDrinkStock(drinkName: String): void
    +updateCoinStock(coinType: String): void
    +calculateChange(drinkPrice: Double, money: Double): Double
}

class DialogBox {
    -input: String
    +getInput(): String
    +showMessage(message: String): void
}

Customer -> DialogBox
Customer -> VendingMachine
VendingMachine -> DialogBox
@enduml

其中，顾客(Customer)、售货机(VendingMachine)和对话框(DialogBox)是三个主要的类。顾客类有投币(insertCoin)、选择饮料(chooseDrink)、获取饮料价格(getDrinkPrice)和获取找零(getChange)等方法。售货机类有检查饮料是否可用(checkDrinkAvailability)、获取饮料价格(getDrinkPrice)、更新饮料库存(updateDrinkStock)、更新硬币库存(updateCoinStock)和计算找零(calculateChange)等方法。对话框类有获取输入(getInput)和显示消息(showMessage)等方法。