Add `initFileList()` in `ServerManagement.java`

src/server/ServerManagement.java

@@ -13,6 +13,18 @@ public class ServerManagement {
 		initFileList();
 	}
 
+	private void initFileList() {
+		File folder = new File(baseDirectory);
+		File[] files = folder.listFiles();
+		/* Add non-recursively files's names to fileList */
+		for (int i = 0; i < files.length; i++) {
+			if (files[i].isFile()) {
+				fileList.add(files[i].getName());
+			}
+		}
+
+	}
+
 	public void upload(String filename) throws NotFound {
 	}