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diff --git a/src/C11_Flux_de_donnees/C11b_Lire_et_ecrire_des_fichiers/StreamReadDemo.java b/src/C11_Flux_de_donnees/C11b_Lire_et_ecrire_des_fichiers/StreamReadDemo.java
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index 0000000..679c476
--- /dev/null
+++ b/src/C11_Flux_de_donnees/C11b_Lire_et_ecrire_des_fichiers/StreamReadDemo.java
@@ -0,0 +1,28 @@
+package C11_Flux_de_donnees.C11b_Lire_et_ecrire_des_fichiers;
+
+import java.io.BufferedReader;
+import java.io.FileReader;
+
+public class StreamReadDemo {
+    public static void main(String args[]) {
+        try {
+            // The first argument is the path where the file will be read.
+            // This is a absolute path for Windows. In Linux, something
+            // like "~/out.txt" would read the file directly in you home directory
+            FileReader f = new FileReader("c://tmp//stuff.txt");
+            BufferedReader bf = new BufferedReader(f);
+            
+            String line = "";
+            
+            // Each readLine() call CONSUMES the complete line
+            line = bf.readLine();
+            System.out.println("The first line of file is :" + line);
+            line = bf.readLine();
+            System.out.println("The second line of file is :" + line);
+            bf.close();
+            
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+}
diff --git a/src/C11_Flux_de_donnees/C11b_Lire_et_ecrire_des_fichiers/StreamWriteDemo.java b/src/C11_Flux_de_donnees/C11b_Lire_et_ecrire_des_fichiers/StreamWriteDemo.java
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--- /dev/null
+++ b/src/C11_Flux_de_donnees/C11b_Lire_et_ecrire_des_fichiers/StreamWriteDemo.java
@@ -0,0 +1,26 @@
+package C11_Flux_de_donnees.C11b_Lire_et_ecrire_des_fichiers;
+
+import java.io.FileOutputStream;
+import java.io.PrintWriter;
+
+public class StreamWriteDemo {
+    public static void main(String[] args) {
+        try {
+            // The first argument is the path where the written file will be
+            // This is a absolute path for Windows. In Linux, something
+            // like "~/out.txt" would write the file directly in you home directory 
+            FileOutputStream fs = new FileOutputStream("c://tmp//out.txt", true);
+            PrintWriter pw = new PrintWriter(fs);
+            
+            // This is the content which will be written INTO the file
+            pw.print("This is the text which will be written");
+            
+            // We have to close the file when we are done working with it
+            pw.close();
+        } catch (Exception e) {
+            System.out.println("File can't be written");
+            e.printStackTrace();
+        }
+        System.out.println("Writing done");
+    }
+}