diff --git a/DEV.2.1/TP/TP6-Dessin/2.Sautoir/MainSautoir.java b/DEV.2.1/TP/TP6-Dessin/2.Sautoir/MainSautoir.java
index 9e76906..2f75f98 100644
--- a/DEV.2.1/TP/TP6-Dessin/2.Sautoir/MainSautoir.java
+++ b/DEV.2.1/TP/TP6-Dessin/2.Sautoir/MainSautoir.java
@@ -17,7 +17,6 @@ public class MainSautoir {
     		}
     			
     	}
-		
     	
     	frame.setSize(500,500);
     	frame.setLocation(500,250);
diff --git a/DEV.2.1/TP/TP6-Dessin/3.Acceuil/Acceuil.java b/DEV.2.1/TP/TP6-Dessin/3.Acceuil/Acceuil.java
new file mode 100644
index 0000000..27d7b55
--- /dev/null
+++ b/DEV.2.1/TP/TP6-Dessin/3.Acceuil/Acceuil.java
@@ -0,0 +1,26 @@
+import javax.swing.*;
+import java.awt.*;
+
+public class Acceuil extends JComponent {
+    private Image logo;
+
+    public Acceuil() {
+        super();
+        this.logo = Toolkit.getDefaultToolkit().getImage("img.png");
+    }
+
+    @Override
+  	protected void paintComponent(Graphics pinceau) {
+    Graphics secondPinceau = pinceau.create();
+    secondPinceau.setColor(this.getForeground());
+
+    Font fonte = new Font("TimesRoman", Font.BOLD,24);
+    secondPinceau.setColor(new Color(128,0,128));
+    secondPinceau.setFont(fonte);
+    secondPinceau.drawString("IUT", 10, 20);
+
+    secondPinceau.drawImage(this.logo, 20,30, this);
+
+
+    }
+}
\ No newline at end of file
diff --git a/DEV.2.1/TP/TP6-Dessin/3.Acceuil/MainAcceuil.java b/DEV.2.1/TP/TP6-Dessin/3.Acceuil/MainAcceuil.java
new file mode 100644
index 0000000..ef1bc49
--- /dev/null
+++ b/DEV.2.1/TP/TP6-Dessin/3.Acceuil/MainAcceuil.java
@@ -0,0 +1,14 @@
+import javax.swing.*;
+import java.awt.*;
+
+public class MainAcceuil {
+    public static void main(String[] args) {
+        JFrame frame = new JFrame("Acceuil");
+    	frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+        frame.setUndecorated(true); //https://waytolearnx.com/2020/05/changer-la-bordure-dune-jframe-java.html
+
+        frame.setSize(278,183);
+    	frame.setLocation(500,250);
+    	frame.setVisible(true);
+    }
+}
\ No newline at end of file
diff --git a/DEV.2.1/TP/TP7-Polymorphisme/1./Moto.java b/DEV.2.1/TP/TP7-Polymorphisme/1./Moto.java
new file mode 100644
index 0000000..baf5aff
--- /dev/null
+++ b/DEV.2.1/TP/TP7-Polymorphisme/1./Moto.java
@@ -0,0 +1,12 @@
+public class Moto implements Vehicule {
+
+	@Override
+	public int nbRoues() {
+		return 2;
+	}
+
+	@Override
+	public String sorte() {
+		return "Moto";
+	}
+}
\ No newline at end of file
diff --git a/DEV.2.1/TP/TP7-Polymorphisme/1./Test.java b/DEV.2.1/TP/TP7-Polymorphisme/1./Test.java
new file mode 100644
index 0000000..be240e7
--- /dev/null
+++ b/DEV.2.1/TP/TP7-Polymorphisme/1./Test.java
@@ -0,0 +1,23 @@
+import javax.swing.JOptionPane;
+ 
+public class Test {
+  public static void main(String[] args) {
+    Vehicule v;
+    Object[] choix = {"Voiture", "Moto"};
+ 
+    int reponse = JOptionPane.showOptionDialog(null,
+      "Quel v\u00E9hicule choisissez-vous ?",
+      "Question",
+      JOptionPane.DEFAULT_OPTION,
+      JOptionPane.QUESTION_MESSAGE,
+      null,
+      choix,
+      null);
+    if (reponse == 0)
+      v = new Voiture();
+    else
+      v = new Moto();
+    System.out.println("Une "+v.sorte()+" poss\u00E8de "+v.nbRoues()+" roues.");
+  }
+}
+
diff --git a/DEV.2.1/TP/TP7-Polymorphisme/1./Vehicule.java b/DEV.2.1/TP/TP7-Polymorphisme/1./Vehicule.java
new file mode 100644
index 0000000..66598f4
--- /dev/null
+++ b/DEV.2.1/TP/TP7-Polymorphisme/1./Vehicule.java
@@ -0,0 +1,5 @@
+public interface Vehicule {
+
+	public int nbRoues();
+	public String sorte();
+}
\ No newline at end of file
diff --git a/DEV.2.1/TP/TP7-Polymorphisme/1./Voiture.java b/DEV.2.1/TP/TP7-Polymorphisme/1./Voiture.java
new file mode 100644
index 0000000..d692aa1
--- /dev/null
+++ b/DEV.2.1/TP/TP7-Polymorphisme/1./Voiture.java
@@ -0,0 +1,12 @@
+public class Voiture implements Vehicule {
+
+	@Override
+	public String sorte() {
+		return "Voiture";
+	}
+
+	@Override
+	public int nbRoues() {
+		return 4;
+	}
+}
\ No newline at end of file