refactor + cache de la bdd

downloader/Log.java

@@ -0,0 +1,12 @@
+package downloader;
+
+public class Log {
+	public static void e(String who,String msg)
+	{
+		System.err.println(who + "  :  "+msg);
+	}
+	public static void i(String who,String msg)
+	{
+		System.out.println(who +"  :  "+msg);
+	}
+}