Index: src/main/java/org/alicebot/ab/AIMLProcessor.java
===================================================================
--- src/main/java/org/alicebot/ab/AIMLProcessor.java	(revision 100)
+++ src/main/java/org/alicebot/ab/AIMLProcessor.java	(working copy)
@@ -18,6 +18,8 @@
         Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
         Boston, MA  02110-1301, USA.
 */
+import java.nio.ByteBuffer;
+import java.nio.charset.StandardCharsets;
 import java.util.ArrayList;
 import java.util.HashSet;
 import java.util.Set;
@@ -31,6 +33,10 @@
 import org.w3c.dom.Node;
 import org.w3c.dom.NodeList;

+import static org.alicebot.ab.MagicStrings.*;
+
+import java.io.*;
+
 /**
  * The core AIML parser and interpreter.
  * Implements the AIML 2.0 specification as described in
@@ -882,7 +888,7 @@
         return result;
     }

-    private static String learn(Node node, ParseState ps)   {                 // learn, learnf AIML 2.0
+    private static String learn(Node node, ParseState ps) throws IOException {                 // learn, learnf AIML 2.0
         NodeList childList = node.getChildNodes();
         String pattern = "";
         String that="*";
@@ -917,12 +923,34 @@
                     c = new Category(0, pattern, that, "*", template, MagicStrings.null_aiml_file);
                 else {// learnf
                     c = new Category(0, pattern, that, "*", template, MagicStrings.learnf_aiml_file);
-                    //ps.chatSession.bot.learnfCategories.add(c);

                     ps.chatSession.bot.learnfGraph.addCategory(c);
-                    //ps.chatSession.bot.categories.add(c);
+
+                    File learnf_f = new File("your_path_to_learnf.aiml");
+                    if(!learnf_f.exists()) {
+                        BufferedWriter output = null;
+                        try {
+                            learnf_f.createNewFile();
+                            output = new BufferedWriter(new FileWriter(learnf_f));
+                            output.write("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n" + "<aiml version=\"2.0\">\n" + "\n" + "</aiml>");
+                        } catch (IOException e) {
+                            e.printStackTrace();
+                        } finally {
+                            if (output != null) {
+                                output.close();
+                            }
+                        }
+                    } else { /* if your file already exists */
+                        RandomAccessFile access = new RandomAccessFile(learnf_f, "rw");
+                        access.seek(learnf_f.length() - 8); /* Skip the </aiml>
+                        String s = String.format(content, pattern, template);
+                        byte [] b = s.getBytes(StandardCharsets.UTF_8);
+                        access.write(b);
+                        access.writeBytes(aiml_end_format);
+                        access.close();
+                    }
                 }
                 ps.chatSession.bot.brain.addCategory(c);
-                  //ps.chatSession.bot.brain.printgraph();
             }
         }
         return "";