ADD file via upload

DiscountStrategy.java

@@ -0,0 +1,13 @@
+package 依赖关系;
+
+
+/**
+ * @author The Administrator
+ * @version 1.0
+ * @created 26-10月-2025 20:19:57
+ */
+public interface DiscountStrategy {
+
+	double calculateDiscount(double amount);
+
+}