Student

src/main/java/core/basesyntax/BirthdayDiscountService.java

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+package core.basesyntax.strategy.impl;
+
+import core.basesyntax.strategy.DiscountService;
+
+public class BirthdayDiscountService implements DiscountService {
+    @Override
+    public double getDiscount() {
+        return 33;
+    }
+}
+

src/main/java/core/basesyntax/BlackFridayDiscountService.java

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+package core.basesyntax.strategy.impl;
+
+import core.basesyntax.strategy.DiscountService;
+
+public class BlackFridayDiscountService implements DiscountService {
+    @Override
+    public double getDiscount() {
+        return 45;
+    }
+}

src/main/java/core/basesyntax/DefaultDiscountService.java

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+package core.basesyntax.strategy.impl;
+
+import core.basesyntax.strategy.DiscountService;
+
+public class DefaultDiscountService implements DiscountService {
+    @Override
+    public double getDiscount() {
+        return 0;
+    }
+}

src/main/java/core/basesyntax/DiscountService.java

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+package core.basesyntax.strategy;
+
+public interface DiscountService {
+    double getDiscount();
+}

src/main/java/core/basesyntax/DiscountStrategy.java

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+package core.basesyntax;
+
+import core.basesyntax.strategy.DiscountService.java;
+import core.basesyntax.strategy.impl.BirthdayDiscountService.java;
+import core.basesyntax.strategy.impl.BlackFridayDiscountService.java;
+import core.basesyntax.strategy.impl.NewYearDiscountService.java;
+import core.basesyntax.strategy.impl.DefaultDiscountService.java;
+
+public class DiscountStrategy {
+    public DiscountService getDiscountServiceBySpecialEvent(String specialEvent) {
+        switch (specialEvent) {
+            case "Birthday":
+                return new BirthdayDiscountService();
+            case "Black Friday":
+                return new BlackFridayDiscountService();
+            case "New Year":
+                return new NewYearDiscountService();
+            default:
+                return new DefaultDiscountService();
+        }
+    }
+}

src/main/java/core/basesyntax/NewYearDiscountService.java

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+package core.basesyntax.strategy.impl;
+
+import core.basesyntax.strategy.DiscountService;
+
+public class NewYearDiscountService implements DiscountService {
+    @Override
+    public double getDiscount() {
+        return 20;
+    }
+}