diff --git a/.gitignore b/.gitignore
index 91e7f73..4d060eb 100644
--- a/.gitignore
+++ b/.gitignore
@@ -63,3 +63,4 @@ dkms.conf
 
 # ZIP
 .zip
+/2A/QualiteDev/1_tp/TP1/target/
diff --git a/2A/QualiteDev/1_tp/TP1/pom.xml b/2A/QualiteDev/1_tp/TP1/pom.xml
new file mode 100644
index 0000000..11903d9
--- /dev/null
+++ b/2A/QualiteDev/1_tp/TP1/pom.xml
@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <groupId>com.mycompany.tp1</groupId>
+    <artifactId>TP1</artifactId>
+    <version>1.0-SNAPSHOT</version>
+    <packaging>jar</packaging>
+    <properties>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <maven.compiler.source>17</maven.compiler.source>
+        <maven.compiler.target>17</maven.compiler.target>
+        <exec.mainClass>com.mycompany.tp1.TP1</exec.mainClass>
+    </properties>
+</project>
\ No newline at end of file
diff --git a/2A/QualiteDev/1_tp/TP1/src/main/java/com/mycompany/tp1/TP1.java b/2A/QualiteDev/1_tp/TP1/src/main/java/com/mycompany/tp1/TP1.java
new file mode 100644
index 0000000..0a76f22
--- /dev/null
+++ b/2A/QualiteDev/1_tp/TP1/src/main/java/com/mycompany/tp1/TP1.java
@@ -0,0 +1,429 @@
+/*
+ * Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license
+ * Click nbfs://nbhost/SystemFileSystem/Templates/Project/Maven2/JavaApp/src/main/java/${packagePath}/${mainClassName}.java to edit this template
+ */
+
+package com.mycompany.tp1;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ *
+ * @author anperederi
+ */
+public class TP1 {
+    public static List<Object> maListe = new ArrayList<Object>();
+    
+    
+    public static void exo1() {
+        List<Object> myList = new ArrayList<Object>();
+        for (int i = 0; i < 100000; i++) {
+            Object myObj = new Object();
+            myList.add(myObj);
+        }
+    }
+    
+    public static void exo2() {
+        for (int i = 0; i < 100000; i++) {
+            Object myObj = new Object();
+            maListe.add(myObj);
+        }
+    }
+    
+    public static void exo3() {
+        /* Exo 3 - 1 */
+        for (int i = 0; i < 100000; i++) {
+            maListe.add(new Object());
+        }
+        for (int i = 0; i < 100; i++) {
+            maListe.remove(0);
+        }
+        System.gc();
+    } 
+    
+    public static void exo4() {
+        int i = 0;
+        while(true) {
+            try {
+                Thread.sleep(20);
+            } catch (InterruptedException e) {
+            }
+            System.gc();
+            
+            Object myObj = new Object();
+            maListe.add(myObj);
+            
+            if(i == 50) {
+                for(int j = 0; j < 500000000; j++) {
+                    Object myObj2 = new Object();
+                    maListe.add(myObj);
+                }
+            }
+            
+            if(i == 800) {
+                for(int j = 0; j < 50000000; j++) {
+                    maListe.clear();
+                }
+            }
+            
+            if(i == 1200) {
+                for(int j = 0; j < 10000000; j++) {
+                    Object myObj3 = new Object();
+                    maListe.add(myObj);
+                }
+            }
+            
+            if(i == 1600) {
+                for(int j = 0; j < 500; j++) {
+                    maListe.clear();
+                }
+            }
+            if(i == 50) {
+                for(int j = 0; j < 500000000; j++) {
+                    Object myObj2 = new Object();
+                    maListe.add(myObj);
+                }
+            }
+            
+            if(i == 800) {
+                for(int j = 0; j < 50000000; j++) {
+                    maListe.clear();
+                }
+            }
+            
+            if(i == 1200) {
+                for(int j = 0; j < 10000000; j++) {
+                    Object myObj3 = new Object();
+                    maListe.add(myObj);
+                }
+            }
+            
+            if(i == 1600) {
+                for(int j = 0; j < 500; j++) {
+                    maListe.clear();
+                }
+            }
+            if(i == 50) {
+                for(int j = 0; j < 500000000; j++) {
+                    Object myObj2 = new Object();
+                    maListe.add(myObj);
+                }
+            }
+            
+            if(i == 800) {
+                for(int j = 0; j < 50000000; j++) {
+                    maListe.clear();
+                }
+            }
+            
+            if(i == 1200) {
+                for(int j = 0; j < 10000000; j++) {
+                    Object myObj3 = new Object();
+                    maListe.add(myObj);
+                }
+            }
+            
+            if(i == 1600) {
+                for(int j = 0; j < 500; j++) {
+                    maListe.clear();
+                }
+            }
+            if(i == 50) {
+                for(int j = 0; j < 500000000; j++) {
+                    Object myObj2 = new Object();
+                    maListe.add(myObj);
+                }
+            }
+            
+            if(i == 800) {
+                for(int j = 0; j < 50000000; j++) {
+                    maListe.clear();
+                }
+            }
+            
+            if(i == 1200) {
+                for(int j = 0; j < 10000000; j++) {
+                    Object myObj3 = new Object();
+                    maListe.add(myObj);
+                }
+            }
+            
+            if(i == 1600) {
+                for(int j = 0; j < 500; j++) {
+                    maListe.clear();
+                }
+            }
+            if(i == 50) {
+                for(int j = 0; j < 500000000; j++) {
+                    Object myObj2 = new Object();
+                    maListe.add(myObj);
+                }
+            }
+            
+            if(i == 800) {
+                for(int j = 0; j < 50000000; j++) {
+                    maListe.clear();
+                }
+            }
+            
+            if(i == 1200) {
+                for(int j = 0; j < 10000000; j++) {
+                    Object myObj3 = new Object();
+                    maListe.add(myObj);
+                }
+            }
+            
+            if(i == 1600) {
+                for(int j = 0; j < 500; j++) {
+                    maListe.clear();
+                }
+            }
+            if(i == 50) {
+                for(int j = 0; j < 500000000; j++) {
+                    Object myObj2 = new Object();
+                    maListe.add(myObj);
+                }
+            }
+            
+            if(i == 800) {
+                for(int j = 0; j < 50000000; j++) {
+                    maListe.clear();
+                }
+            }
+            
+            if(i == 1200) {
+                for(int j = 0; j < 10000000; j++) {
+                    Object myObj3 = new Object();
+                    maListe.add(myObj);
+                }
+            }
+            
+            if(i == 1600) {
+                for(int j = 0; j < 500; j++) {
+                    maListe.clear();
+                }
+            }
+            if(i == 50) {
+                for(int j = 0; j < 500000000; j++) {
+                    Object myObj2 = new Object();
+                    maListe.add(myObj);
+                }
+            }
+            
+            if(i == 800) {
+                for(int j = 0; j < 50000000; j++) {
+                    maListe.clear();
+                }
+            }
+            
+            if(i == 1200) {
+                for(int j = 0; j < 10000000; j++) {
+                    Object myObj3 = new Object();
+                    maListe.add(myObj);
+                }
+            }
+            
+            if(i == 1600) {
+                for(int j = 0; j < 500; j++) {
+                    maListe.clear();
+                }
+            }
+            if(i == 50) {
+                for(int j = 0; j < 500000000; j++) {
+                    Object myObj2 = new Object();
+                    maListe.add(myObj);
+                }
+            }
+            
+            if(i == 800) {
+                for(int j = 0; j < 50000000; j++) {
+                    maListe.clear();
+                }
+            }
+            
+            if(i == 1200) {
+                for(int j = 0; j < 10000000; j++) {
+                    Object myObj3 = new Object();
+                    maListe.add(myObj);
+                }
+            }
+            
+            if(i == 1600) {
+                for(int j = 0; j < 500; j++) {
+                    maListe.clear();
+                }
+            }
+            if(i == 50) {
+                for(int j = 0; j < 500000000; j++) {
+                    Object myObj2 = new Object();
+                    maListe.add(myObj);
+                }
+            }
+            
+            if(i == 800) {
+                for(int j = 0; j < 50000000; j++) {
+                    maListe.clear();
+                }
+            }
+            
+            if(i == 1200) {
+                for(int j = 0; j < 10000000; j++) {
+                    Object myObj3 = new Object();
+                    maListe.add(myObj);
+                }
+            }
+            
+            if(i == 1600) {
+                for(int j = 0; j < 500; j++) {
+                    maListe.clear();
+                }
+            }
+            if(i == 50) {
+                for(int j = 0; j < 500000000; j++) {
+                    Object myObj2 = new Object();
+                    maListe.add(myObj);
+                }
+            }
+            
+            if(i == 800) {
+                for(int j = 0; j < 50000000; j++) {
+                    maListe.clear();
+                }
+            }
+            
+            if(i == 1200) {
+                for(int j = 0; j < 10000000; j++) {
+                    Object myObj3 = new Object();
+                    maListe.add(myObj);
+                }
+            }
+            
+            if(i == 1600) {
+                for(int j = 0; j < 500; j++) {
+                    maListe.clear();
+                }
+            }
+            if(i == 5000) {
+                for(int j = 0; j < 500000000; j++) {
+                    Object myObj2 = new Object();
+                    maListe.add(myObj);
+                }
+            }
+            
+            if(i == 800) {
+                for(int j = 0; j < 50000000; j++) {
+                    maListe.clear();
+                }
+            }
+            
+            if(i == 1200) {
+                for(int j = 0; j < 10000000; j++) {
+                    Object myObj3 = new Object();
+                    maListe.add(myObj);
+                }
+            }
+            
+            if(i == 1600) {
+                for(int j = 0; j < 500; j++) {
+                    maListe.clear();
+                }
+            }
+            if(i == 5000) {
+                for(int j = 0; j < 500000000; j++) {
+                    Object myObj2 = new Object();
+                    maListe.add(myObj);
+                }
+            }
+            
+            if(i == 800) {
+                for(int j = 0; j < 50000000; j++) {
+                    maListe.clear();
+                }
+            }
+            
+            if(i == 1200) {
+                for(int j = 0; j < 10000000; j++) {
+                    Object myObj3 = new Object();
+                    maListe.add(myObj);
+                }
+            }
+            
+            if(i == 1600) {
+                for(int j = 0; j < 500; j++) {
+                    maListe.clear();
+                }
+            }
+            if(i == 5000) {
+                for(int j = 0; j < 500000000; j++) {
+                    Object myObj2 = new Object();
+                    maListe.add(myObj);
+                }
+            }
+            
+            if(i == 800) {
+                for(int j = 0; j < 50000000; j++) {
+                    maListe.clear();
+                }
+            }
+            
+            if(i == 1200) {
+                for(int j = 0; j < 10000000; j++) {
+                    Object myObj3 = new Object();
+                    maListe.add(myObj);
+                }
+            }
+            
+            if(i == 1600) {
+                for(int j = 0; j < 500; j++) {
+                    maListe.clear();
+                }
+            }
+            if(i == 500) {
+                for(int j = 0; j < 500000000; j++) {
+                    Object myObj2 = new Object();
+                    maListe.add(myObj);
+                }
+            }
+            
+            if(i == 800) {
+                for(int j = 0; j < 50000000; j++) {
+                    maListe.clear();
+                }
+            }
+            
+            if(i == 1200) {
+                for(int j = 0; j < 10000000; j++) {
+                    Object myObj3 = new Object();
+                    maListe.add(myObj);
+                }
+            }
+            
+            if(i == 1600) {
+                for(int j = 0; j < 500; j++) {
+                    maListe.clear();
+                }
+            }
+            System.out.println("Iteration: " + i);
+            i += 1;
+        }
+    } 
+    
+    public static void main(String[] args) {
+//        /* Exo 1 - 3 */
+//        int i = 0;
+//        while(true) {
+//            try {
+//                Thread.sleep(1000);
+//            } catch (InterruptedException e) {
+//            }
+//            System.out.println("Iteration: " + i);
+//            /* Exo 1 - 4 */
+//            exo3();
+//            i += 1;
+//        }
+        /* Exo 1 - 2
+        System.out.println("Hello World!"); */
+        exo4();
+    }
+}
diff --git a/2A/QualiteDev/TP1.pdf b/2A/QualiteDev/TP1.pdf
new file mode 100644
index 0000000..3e0c481
Binary files /dev/null and b/2A/QualiteDev/TP1.pdf differ