add list operation

ClientAndLoggers/ClientMain.java

@@ -31,27 +31,28 @@ public class ClientMain {
 			
 			try { client.store(new File("test.txt")); } catch(IOException e) { e.printStackTrace(); }
 
-			try {Thread.sleep(5000);} catch (InterruptedException e) {System.out.println(e);}
+			try { client.store(new File("test2.txt")); } catch(IOException e) { e.printStackTrace(); }
+
+			try {Thread.sleep(1000);} catch (InterruptedException e) {System.out.println(e);}
 			
 //			try { client.store(new File("Clipboard01.pdf")); } catch(IOException e) { e.printStackTrace(); }
 //
 //			try { client.store(new File("Clipboard01.jpg")); } catch(IOException e) { e.printStackTrace(); }
 //
-//			String list[] = null;
-//			try { list = list(client); } catch(IOException e) { e.printStackTrace(); }
+			String list[] = null;
+			try { list = list(client); } catch(IOException e) { e.printStackTrace(); }
 //
 //			try { client.load("test.txt", downloadFolder); } catch(IOException e) { e.printStackTrace(); }
 			
 //			if (list != null)
 //				for (String filename : list)
 //					try { client.remove(filename); } catch(IOException e) { e.printStackTrace(); }
-			try { client.remove("test.txt"); } catch(IOException e) { e.printStackTrace(); }
+//			try { client.remove("test.txt"); } catch(IOException e) { e.printStackTrace(); }
 			
 //			try { list(client); } catch(IOException e) { e.printStackTrace(); }
 			
 		} finally {
-			if (client != null)
-				try { client.disconnect(); } catch(Exception e) { e.printStackTrace(); }
+			if (client != null) try { client.disconnect(); } catch(Exception e) { e.printStackTrace(); }
 		}
 	}
 

src/ftp/Controller.java

@@ -197,6 +197,14 @@ public class Controller extends Server {
 
             file.removeAck();
         }
+
+        else if (command.equals("LIST")) {
+            String filenames = fileIndex.entrySet().stream().
+                    map(x -> x.getValue().getFilename()).
+                    collect(Collectors.joining(" "));
+
+            send("LIST " + filenames, client, "Client");
+        }
     }