diff --git a/README.md b/README.md
index ac9e853..f1eba84 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,13 @@
 Мой репозиторий с домашками по курсу Spring Boot
 
 Тараканова Екатерина, преподаватель Королёв Александр
+
+
+Дз по теме DI:
+Реализовать приложение (не важно какая логика, так как основой упор идет на DI), в котором:
+- используется DI через конструктор
+- используется DI через поле
+- используется DI через сеттеры
+- создаются и внедряются два бина разных классов, но реализующих один интерфейс
+- при создании и “разрушении” бина в лог выводится сообщение
+(примечание: здесь вам не понадобятся контроллеры. Достаточно описать только то, что описано выше)
diff --git a/src/main/java/com/example/SpringBootProject/entity/Animal.java b/src/main/java/com/example/SpringBootProject/entity/Animal.java
new file mode 100644
index 0000000..ea4a5e7
--- /dev/null
+++ b/src/main/java/com/example/SpringBootProject/entity/Animal.java
@@ -0,0 +1,5 @@
+package com.example.SpringBootProject.entity;
+
+public interface Animal {
+    void makeSound();
+}
diff --git a/src/main/java/com/example/SpringBootProject/entity/Cat.java b/src/main/java/com/example/SpringBootProject/entity/Cat.java
new file mode 100644
index 0000000..fc02eb5
--- /dev/null
+++ b/src/main/java/com/example/SpringBootProject/entity/Cat.java
@@ -0,0 +1,13 @@
+package com.example.SpringBootProject.entity;
+
+import lombok.extern.log4j.Log4j2;
+import org.springframework.stereotype.Component;
+
+@Component
+@Log4j2
+public class Cat implements Animal {
+    @Override
+    public void makeSound(){
+        log.info("Мяу мяу");
+    }
+}
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diff --git a/src/main/java/com/example/SpringBootProject/entity/Dog.java b/src/main/java/com/example/SpringBootProject/entity/Dog.java
new file mode 100644
index 0000000..cbdbefc
--- /dev/null
+++ b/src/main/java/com/example/SpringBootProject/entity/Dog.java
@@ -0,0 +1,13 @@
+package com.example.SpringBootProject.entity;
+
+import lombok.extern.log4j.Log4j2;
+import org.springframework.stereotype.Component;
+
+@Component
+@Log4j2
+public class Dog implements Animal {
+    @Override
+    public void makeSound() {
+        log.info("Гав гав");
+    }
+}
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diff --git a/src/main/java/com/example/SpringBootProject/services/ConstructorInjection.java b/src/main/java/com/example/SpringBootProject/services/ConstructorInjection.java
new file mode 100644
index 0000000..047f526
--- /dev/null
+++ b/src/main/java/com/example/SpringBootProject/services/ConstructorInjection.java
@@ -0,0 +1,33 @@
+package com.example.SpringBootProject.services;
+
+
+import com.example.SpringBootProject.entity.Animal;
+import jakarta.annotation.PostConstruct;
+import jakarta.annotation.PreDestroy;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.log4j.Log4j2;
+import org.springframework.stereotype.Service;
+
+
+@Log4j2
+@Service
+@RequiredArgsConstructor
+public class ConstructorInjection {
+    private final Animal dog;
+    private final Animal cat;
+
+    @PostConstruct
+    private void init(){
+        log.info("ConstructInjection is started");
+    }
+
+    @PreDestroy
+    private void destroy(){
+        log.info("ConstructInjection is destroyed");
+    }
+
+    private void animalMakeNoise(){
+        cat.makeSound();
+        dog.makeSound();
+    }
+}
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diff --git a/src/main/java/com/example/SpringBootProject/services/FieldInjection.java b/src/main/java/com/example/SpringBootProject/services/FieldInjection.java
new file mode 100644
index 0000000..3de1c3b
--- /dev/null
+++ b/src/main/java/com/example/SpringBootProject/services/FieldInjection.java
@@ -0,0 +1,32 @@
+package com.example.SpringBootProject.services;
+
+import com.example.SpringBootProject.entity.Animal;
+import jakarta.annotation.PostConstruct;
+import jakarta.annotation.PreDestroy;
+import lombok.extern.log4j.Log4j2;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+@Log4j2
+@Service
+public class FieldInjection {
+    @Autowired
+    private Animal dog;
+    @Autowired
+    private Animal cat;
+
+    @PostConstruct
+    private void init(){
+        log.info("FieldInjection is started");
+    }
+
+    @PreDestroy
+    private void destroy(){
+        log.info("FieldInjection is destroyed");
+    }
+
+    private void animalMakeNoise(){
+        cat.makeSound();
+        dog.makeSound();
+    }
+}
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diff --git a/src/main/java/com/example/SpringBootProject/services/SetterInjection.java b/src/main/java/com/example/SpringBootProject/services/SetterInjection.java
new file mode 100644
index 0000000..278841b
--- /dev/null
+++ b/src/main/java/com/example/SpringBootProject/services/SetterInjection.java
@@ -0,0 +1,39 @@
+package com.example.SpringBootProject.services;
+
+import com.example.SpringBootProject.entity.Animal;
+import jakarta.annotation.PostConstruct;
+import jakarta.annotation.PreDestroy;
+import lombok.extern.log4j.Log4j2;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+@Log4j2
+@Service
+public class SetterInjection {
+    private Animal cat;
+    private Animal dog;
+
+    @PostConstruct
+    private void init(){
+        log.info("SetterInjection is started");
+    }
+
+    @PreDestroy
+    private void destroy(){
+        log.info("SetterInjection is destroyed");
+    }
+    @Autowired
+    private void setDog(Animal dog){
+        this.dog = dog;
+    }
+
+    @Autowired
+    private void setCat(Animal cat){
+        this.cat = cat;
+    }
+
+    private void animalMakeNoise(){
+        cat.makeSound();
+        dog.makeSound();
+    }
+}
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