diff --git a/slides.md b/slides.md
index e54814f..fb5ff74 100644
--- a/slides.md
+++ b/slides.md
@@ -190,6 +190,21 @@
 
 ---
 
+# Null patterns
+
+```java
+var result = switch (obj) {
+    case null      -> "null";
+    case Integer i -> String.format("int %d", i);
+    case Long l    -> String.format("long %d", l);
+    case Double d  -> String.format("double %f", d);
+    case String s  -> String.format("String %s", s);
+    default        -> obj.toString();
+};
+```
+
+---
+
 # Record patterns
 
 ```java
@@ -204,8 +219,6 @@
 * Deconstructores, nos permite acceder a los componentes de los objectos.
 * Exhaustiveness.
 
-<!-- se pueden anidar, un record dentro de otro record-->
-
 ---
 
 # Guarded patterns
@@ -221,6 +234,20 @@
 
 ---
 
+# Nested patterns
+
+```java
+var result = switch (this) {
+    case Square(Point(var x, var y), var side) -> ...;
+    case Rectangle(Point(var x, var y), var weight, var height) -> ...;
+    case Circle(Point(var x, var y), var radious) -> ...;
+};
+```
+
+* Podemos anidar patrones
+
+---
+
 # Unnamed variables and patterns
 
 ```java
@@ -636,18 +663,6 @@
     - reduce cognitive load.
     - pattern exhaustiveness.
 
-  features:
-   - enum
-   - null checks
-   - partial / nested patterns
-
-   other languages:
-   - scala
-   - kotlin
-   - haskell
-   - rust
-   - C#
-
    algebraic data types:
    - algegraic: because it has properties like an algebra
    - product type
diff --git a/snippets/Switches.java b/snippets/Switches.java
index a25ee71..cc1e224 100644
--- a/snippets/Switches.java
+++ b/snippets/Switches.java
@@ -48,4 +48,14 @@
         return 0;
     }
 
+    void method5(Object obj) {
+        var result = switch (obj) {
+            case null      -> "null";
+            case Integer i -> String.format("int %d", i);
+            case Long l    -> String.format("long %d", l);
+            case Double d  -> String.format("double %f", d);
+            case String s  -> String.format("String %s", s);
+            default        -> obj.toString();
+        };
+    }
 }