diff --git a/StPatrickApp-build/StPatrickApp-code/src/main/java/ch/heigvd/res/stpatrick/ARemoverReader.java b/StPatrickApp-build/StPatrickApp-code/src/main/java/ch/heigvd/res/stpatrick/ARemoverReader.java
new file mode 100644
index 0000000..db46e77
--- /dev/null
+++ b/StPatrickApp-build/StPatrickApp-code/src/main/java/ch/heigvd/res/stpatrick/ARemoverReader.java
@@ -0,0 +1,25 @@
+package ch.heigvd.res.stpatrick;
+
+import java.io.IOException;
+import java.io.Reader;
+
+/**
+ * Created by ALi on 20.03.2017.
+ */
+public class ARemoverReader extends Reader {
+
+    @Override
+    public int read(char[] cbuf, int off, int len) throws IOException {
+        for (int i = off ; i<off+len; i++){
+            if(cbuf[i]=='a'||cbuf[i]=='A'){
+                i++;
+            }
+        }
+        return 0;
+    }
+
+    @Override
+    public void close() throws IOException {
+
+    }
+}
diff --git a/StPatrickApp-build/StPatrickApp-code/src/main/java/ch/heigvd/res/stpatrick/ARemoverWriter.java b/StPatrickApp-build/StPatrickApp-code/src/main/java/ch/heigvd/res/stpatrick/ARemoverWriter.java
new file mode 100644
index 0000000..98a8d3d
--- /dev/null
+++ b/StPatrickApp-build/StPatrickApp-code/src/main/java/ch/heigvd/res/stpatrick/ARemoverWriter.java
@@ -0,0 +1,24 @@
+package ch.heigvd.res.stpatrick;
+
+import java.io.IOException;
+import java.io.Writer;
+
+/**
+ * Created by ALi on 20.03.2017.
+ */
+public class ARemoverWriter extends Writer {
+    @Override
+    public void write(char[] cbuf, int off, int len) throws IOException {
+
+    }
+
+    @Override
+    public void flush() throws IOException {
+
+    }
+
+    @Override
+    public void close() throws IOException {
+
+    }
+}
diff --git a/StPatrickApp-build/StPatrickApp-code/src/main/java/ch/heigvd/res/stpatrick/Application.java b/StPatrickApp-build/StPatrickApp-code/src/main/java/ch/heigvd/res/stpatrick/Application.java
index 57c6f0f..1042608 100644
--- a/StPatrickApp-build/StPatrickApp-code/src/main/java/ch/heigvd/res/stpatrick/Application.java
+++ b/StPatrickApp-build/StPatrickApp-code/src/main/java/ch/heigvd/res/stpatrick/Application.java
@@ -1,6 +1,11 @@
 package ch.heigvd.res.stpatrick;
 
 
+import java.io.FileReader;
+import java.io.InputStreamReader;
+import java.io.Reader;
+import java.io.Writer;
+
 /**
  * 
  * @author Olivier Liechti
@@ -14,6 +19,7 @@ public IStreamProcessorsFactory getStreamProcessorsFactory() {
   }
 
   IStreamDecoratorController getStreamDecoratorController() {
-    return null;
+    return new StreamDecoratorController();
+
   }
 }