diff --git a/dependency-injection/src/main/java/com/iluwatar/App.java b/dependency-injection/src/main/java/com/iluwatar/App.java
index faf592178..5aef55e3e 100644
--- a/dependency-injection/src/main/java/com/iluwatar/App.java
+++ b/dependency-injection/src/main/java/com/iluwatar/App.java
@@ -3,5 +3,7 @@ package com.iluwatar;
 public class App {
 	
     public static void main( String[] args ) {
+    	Wizard wizard = new Wizard();
+    	wizard.smoke();
     }
 }
diff --git a/dependency-injection/src/main/java/com/iluwatar/OldTobyTobacco.java b/dependency-injection/src/main/java/com/iluwatar/OldTobyTobacco.java
new file mode 100644
index 000000000..ec8417643
--- /dev/null
+++ b/dependency-injection/src/main/java/com/iluwatar/OldTobyTobacco.java
@@ -0,0 +1,9 @@
+package com.iluwatar;
+
+public class OldTobyTobacco implements Tobacco {
+
+	@Override
+	public void smoke() {
+		System.out.println(String.format("Smoking %s", this.getClass().getSimpleName()));
+	}
+}
diff --git a/dependency-injection/src/main/java/com/iluwatar/Tobacco.java b/dependency-injection/src/main/java/com/iluwatar/Tobacco.java
new file mode 100644
index 000000000..853a3c334
--- /dev/null
+++ b/dependency-injection/src/main/java/com/iluwatar/Tobacco.java
@@ -0,0 +1,7 @@
+package com.iluwatar;
+
+public interface Tobacco {
+	
+	public void smoke();
+
+}
diff --git a/dependency-injection/src/main/java/com/iluwatar/Wizard.java b/dependency-injection/src/main/java/com/iluwatar/Wizard.java
new file mode 100644
index 000000000..28278d2ae
--- /dev/null
+++ b/dependency-injection/src/main/java/com/iluwatar/Wizard.java
@@ -0,0 +1,10 @@
+package com.iluwatar;
+
+public class Wizard {
+	
+	private OldTobyTobacco tobacco = new OldTobyTobacco();
+	
+	public void smoke() {
+		tobacco.smoke();
+	}
+}