diff --git a/bin/C13_Heritage/13_objects2_16x9_fr.pdf b/bin/C13_Heritage/13_objects2_16x9_fr.pdf
new file mode 100644
index 0000000..53e0f80
Binary files /dev/null and b/bin/C13_Heritage/13_objects2_16x9_fr.pdf differ
diff --git a/bin/C13_Heritage/App.class b/bin/C13_Heritage/App.class
new file mode 100644
index 0000000..600f699
Binary files /dev/null and b/bin/C13_Heritage/App.class differ
diff --git a/bin/C13_Heritage/Building.class b/bin/C13_Heritage/Building.class
new file mode 100644
index 0000000..5aaadae
Binary files /dev/null and b/bin/C13_Heritage/Building.class differ
diff --git a/bin/C13_Heritage/Car.class b/bin/C13_Heritage/Car.class
new file mode 100644
index 0000000..897b803
Binary files /dev/null and b/bin/C13_Heritage/Car.class differ
diff --git a/bin/C13_Heritage/House.class b/bin/C13_Heritage/House.class
new file mode 100644
index 0000000..17dad92
Binary files /dev/null and b/bin/C13_Heritage/House.class differ
diff --git a/bin/C13_Heritage/Test.class b/bin/C13_Heritage/Test.class
new file mode 100644
index 0000000..f8dac5f
Binary files /dev/null and b/bin/C13_Heritage/Test.class differ
diff --git a/bin/C13_Heritage/Truck.class b/bin/C13_Heritage/Truck.class
new file mode 100644
index 0000000..6d4e2a8
Binary files /dev/null and b/bin/C13_Heritage/Truck.class differ
diff --git a/bin/C13_Heritage/Vehicle.class b/bin/C13_Heritage/Vehicle.class
new file mode 100644
index 0000000..5401202
Binary files /dev/null and b/bin/C13_Heritage/Vehicle.class differ
diff --git a/src/C13_Heritage/13_objects2_16x9_fr.pdf b/src/C13_Heritage/13_objects2_16x9_fr.pdf
new file mode 100644
index 0000000..53e0f80
Binary files /dev/null and b/src/C13_Heritage/13_objects2_16x9_fr.pdf differ
diff --git a/src/C13_Heritage/App.java b/src/C13_Heritage/App.java
new file mode 100644
index 0000000..e448a9d
--- /dev/null
+++ b/src/C13_Heritage/App.java
@@ -0,0 +1,22 @@
+package C13_Heritage;
+
+public class App {
+    public static void main(String[] args) {
+        House maison = new House("Route du stade 30", 5);
+        House gp = new House(null, 0);
+        Building hes = new Building("Rue de l'industrie");
+        Building alpolEPFL = new Building();
+
+        System.out.println(maison.toString());
+        System.out.println(gp.toString());
+        System.out.println(hes.toString());
+        System.out.println(alpolEPFL.toString());
+
+        gp.setAddress("Toulouse");
+        gp.setnRooms(4);
+        alpolEPFL.setAddress("Sion");
+
+        System.out.println(gp.toString());
+        System.out.println(alpolEPFL.toString());
+    }
+}
diff --git a/src/C13_Heritage/Building.java b/src/C13_Heritage/Building.java
new file mode 100644
index 0000000..59c0b44
--- /dev/null
+++ b/src/C13_Heritage/Building.java
@@ -0,0 +1,25 @@
+package C13_Heritage;
+
+public class Building {
+    private String address;
+
+    Building(){
+
+    }
+    Building(String address){
+        this.address = address;
+    }
+
+    void setAddress(String address){
+        this.address = address;
+    }
+
+    public String getAddress() {
+        return address;
+    }
+
+    @Override
+    public String toString() {
+        return Building.class.getName() + "@" + address;
+    }
+}
diff --git a/src/C13_Heritage/Car.java b/src/C13_Heritage/Car.java
new file mode 100644
index 0000000..e47ae40
--- /dev/null
+++ b/src/C13_Heritage/Car.java
@@ -0,0 +1,19 @@
+package C13_Heritage;
+
+public class Car extends Vehicle{
+
+    Car(int year, int price) {
+        super(year, price);
+    }
+
+    @Override
+    void start() {
+        System.out.println("Vroum vroum");
+    }
+
+    @Override
+    void accelerate() {
+        System.out.println("Vrooom");
+    }
+    
+}
diff --git a/src/C13_Heritage/House.java b/src/C13_Heritage/House.java
new file mode 100644
index 0000000..1c30991
--- /dev/null
+++ b/src/C13_Heritage/House.java
@@ -0,0 +1,22 @@
+package C13_Heritage;
+
+public class House extends Building{
+    private int nRooms;
+    House(String address, int nRooms){
+        super(address);
+        this.nRooms = Math.abs(nRooms);
+    }
+
+    public void setnRooms(int nRooms) {
+        this.nRooms = Math.abs(nRooms);
+    }
+    public int getnRooms() {
+        return nRooms;
+    }
+
+    @Override
+    public String toString() {
+        return super.toString() + "#" + nRooms;
+    }
+
+}
diff --git a/src/C13_Heritage/Test.java b/src/C13_Heritage/Test.java
new file mode 100644
index 0000000..4050857
--- /dev/null
+++ b/src/C13_Heritage/Test.java
@@ -0,0 +1,14 @@
+package C13_Heritage;
+
+public class Test {
+    public static void main(String[] args) {
+        Car suzuki = new Car(2003, 4000);
+        Truck tracteur = new Truck(2020, 12000);
+        Car citroen = new Car(2006, 8000);
+
+        System.out.println(suzuki);
+        System.out.println(tracteur);
+        System.out.println(citroen);
+        
+    }
+}
diff --git a/src/C13_Heritage/Truck.java b/src/C13_Heritage/Truck.java
new file mode 100644
index 0000000..3c9130a
--- /dev/null
+++ b/src/C13_Heritage/Truck.java
@@ -0,0 +1,19 @@
+package C13_Heritage;
+
+public class Truck extends Vehicle{
+
+    Truck(int year, int price) {
+        super(year, price);
+    }
+
+    @Override
+    void start() {
+        System.out.println("Peuf-peuf");
+    }
+
+    @Override
+    void accelerate() {
+        System.out.println("Broum");
+    }
+    
+}
diff --git a/src/C13_Heritage/Vehicle.java b/src/C13_Heritage/Vehicle.java
new file mode 100644
index 0000000..8d13bea
--- /dev/null
+++ b/src/C13_Heritage/Vehicle.java
@@ -0,0 +1,24 @@
+package C13_Heritage;
+
+public abstract class Vehicle {
+    private static int nVehicle;
+    private int matricule;
+    private int year;
+    private int price;
+
+    Vehicle(int year, int price){
+        this.year = year;
+        this.price = price;
+        nVehicle++;
+        this.matricule = nVehicle;
+    }
+
+    abstract void start();
+    abstract void accelerate();
+
+    @Override
+    public String toString() {
+        return "Vehicle " + matricule + ". Built in " + year + ", price: " + price;
+    }
+
+}