BAEL-7388, Builder Pattern and Inheritance

patterns-modules/design-patterns-creational-2/src/test/java/com/baeldung/builder/inheritance/withoutgenerics/BuilderInheritanceUnitTest.java

@@ -0,0 +1,19 @@
+package com.baeldung.builder.inheritance.withoutgenerics;
+
+import static org.junit.jupiter.api.Assertions.*;
+import org.junit.jupiter.api.Test;
+
+public class BuilderInheritanceUnitTest {
+
+    @Test
+    void givenNonGenericImpl_whenBuild_thenReturnObject() {
+        Car car = new Car.CarBuilder().colour("red")
+            .fuelType("Petrol")
+            .make("Ford")
+            .model("F")
+            .build();
+        assertEquals("red", car.getColour());
+        assertEquals("Ford", car.getMake());
+    }
+
+}

patterns-modules/design-patterns-creational-2/src/test/java/com/baledung/builder/inheritance/withgenerics/BuilderInheritanceUnitTest.java

@@ -0,0 +1,36 @@
+package com.baledung.builder.inheritance.withgenerics;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import org.junit.jupiter.api.Test;
+
+import com.baeldung.builder.inheritance.withgenerics.Car;
+import com.baeldung.builder.inheritance.withgenerics.ElectricCar;
+
+public class BuilderInheritanceUnitTest {
+
+    @Test
+    void givenGenericImpl_whenBuild_thenReturnObject() {
+        Car.Builder<?> carBuilder1 = new Car.Builder();
+        Car car = carBuilder1.colour("red")
+            .fuelType("Petrol")
+            .make("Ford")
+            .model("F")
+            .build();
+
+        ElectricCar.Builder<?> ElectricCarBuilder = new ElectricCar.Builder();
+        ElectricCar eCar = ElectricCarBuilder.make("Mercedes")
+            .colour("White")
+            .model("G")
+            .fuelType("Electric")
+            .batteryType("Lithium")
+            .build();
+
+        assertEquals("red", car.getColour());
+        assertEquals("Ford", car.getMake());
+
+        assertEquals("Electric", eCar.getFuelType());
+        assertEquals("Lithium", eCar.getBatteryType());
+    }
+
+}