Abstract Example

backend/kaiser/src/main/java/com/example/springKaiser/AbstractExample/AbstractInterface/House.java

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+package com.example.springKaiser.AbstractExample.AbstractInterface;
+
+public interface House {
+
+    final String HOUSETYPE = "ID9123701";
+
+    int rooms = 0;
+    int walls = 0;
+    boolean isWaterGoingThroughIt = true;
+
+    public int getRooms();
+
+    public int getWalls();
+
+    public boolean isIsWaterGoingThroughIt();
+
+}

backend/kaiser/src/main/java/com/example/springKaiser/AbstractExample/AbstractInterface/ResidentialHouse.java

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+package com.example.springKaiser.AbstractExample.AbstractInterface;
+
+public class ResidentialHouse implements House {
+    @Override
+    public int getRooms() {
+        return walls;
+    }
+
+    @Override
+    public int getWalls() {
+        return 20;
+    }
+
+    @Override
+    public boolean isIsWaterGoingThroughIt() {
+        return true;
+    }
+
+    public String getGovernmentHouseTypeId() {
+        return HOUSETYPE;
+    }
+}

backend/kaiser/src/main/java/com/example/springKaiser/AbstractExample/AnimalInheritance/Animal.java

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+package com.example.springKaiser.AbstractExample.AnimalInheritance;
+
+    public abstract class Animal {
+        int legs;
+        int arms = 5;
+        abstract void getLegs();
+
+        public int getArms() {
+            return this.arms;
+        }
+}

backend/kaiser/src/main/java/com/example/springKaiser/AbstractExample/AnimalInheritance/Cat.java

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+package com.example.springKaiser.AbstractExample.AnimalInheritance;
+
+public class Cat extends Animal {
+
+    @Override
+    void getLegs() {
+
+    }
+
+    @Override
+    public int getArms() {
+        return 20;
+    }
+}

backend/kaiser/src/main/java/com/example/springKaiser/AbstractExample/AnimalInheritance/UseAnimals.java

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+package com.example.springKaiser.AbstractExample.AnimalInheritance;
+
+import org.springframework.stereotype.Service;
+
+@Service
+public class UseAnimals {
+    Animal animal = new Animal() {
+        @Override
+        void getLegs() {
+
+        }
+    };
+    Cat cat = new Cat();
+
+    Animal catLikeCreature = new Cat();
+
+    public void exampleMethod() {
+        animal.getArms();
+        cat.getArms();
+
+        catLikeCreature.getArms();
+    }
+
+
+}

backend/kaiser/src/test/java/com/example/springKaiser/AbstractExample/UseAnimalsTest.java

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+package com.example.springKaiser.AbstractExample;
+
+import com.example.springKaiser.AbstractExample.AnimalInheritance.UseAnimals;
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+
+@SpringBootTest
+class UseAnimalsTest {
+
+    @Autowired
+    private UseAnimals useAnimals;
+
+    @Test
+    void exampleMethod() {
+        useAnimals.exampleMethod();
+    }
+}