package 依赖关系; public class DiscountStrategyTest { public static void main(String[] args) { DiscountStrategy fixed = new FixedAmountDiscount(); DiscountStrategy percent = new PercentageDiscount(); double amount = 80.0; System.out.println("Amount: " + amount); System.out.println("Fixed discount: " + fixed.calculateDiscount(amount)); System.out.println("Percentage discount: " + percent.calculateDiscount(amount)); } }