diff --git a/demo/02/src/main/java/pl/amu/edu/demo/data/Address.java b/demo/02/src/main/java/pl/amu/edu/demo/data/Address.java
index 6e13044..9343dc0 100644
--- a/demo/02/src/main/java/pl/amu/edu/demo/data/Address.java
+++ b/demo/02/src/main/java/pl/amu/edu/demo/data/Address.java
@@ -2,12 +2,20 @@ package pl.amu.edu.demo.data;
 
 import lombok.AccessLevel;
 import lombok.AllArgsConstructor;
+import lombok.Builder;
 import lombok.experimental.FieldDefaults;
 
-@AllArgsConstructor
+@AllArgsConstructor(access = AccessLevel.PRIVATE)
 @FieldDefaults(level = AccessLevel.PUBLIC, makeFinal = true)
+@Builder(builderClassName = "AddressBuilder", setterPrefix = "with")
 public class Address {
     String addressLine1;
     String addressLine2;
     String zipCode;
 }
+
+final class AddressBuilder {
+    String addressLine1;
+    String addressLine2 = null;
+    String zipCode;
+}