1 files changed, 15 insertions, 0 deletions
diff --git a/elki/src/main/java/de/lmu/ifi/dbs/elki/utilities/optionhandling/parameters/FileListParameter.java b/elki/src/main/java/de/lmu/ifi/dbs/elki/utilities/optionhandling/parameters/FileListParameter.java
index e5f1b021..cc6d885f 100644
--- a/elki/src/main/java/de/lmu/ifi/dbs/elki/utilities/optionhandling/parameters/FileListParameter.java
+++ b/elki/src/main/java/de/lmu/ifi/dbs/elki/utilities/optionhandling/parameters/FileListParameter.java
@@ -37,6 +37,7 @@ import de.lmu.ifi.dbs.elki.utilities.optionhandling.WrongParameterValueException
  * 
  * @author Steffi Wanka
  * @author Erich Schubert
+ * @since 0.3
  */
 public class FileListParameter extends ListParameter<FileListParameter, List<File>> {
   /**
@@ -89,6 +90,20 @@ public class FileListParameter extends ListParameter<FileListParameter, List<Fil
     return buf.toString();
   }
 
+  @Override
+  public String getDefaultValueAsString() {
+    StringBuilder buf = new StringBuilder();
+    List<File> val = getDefaultValue();
+    Iterator<File> veciter = val.iterator();
+    while(veciter.hasNext()) {
+      buf.append(veciter.next());
+      if (veciter.hasNext()) {
+        buf.append(LIST_SEP);
+      }
+    }
+    return buf.toString();
+  }
+
   @SuppressWarnings("unchecked")
   @Override
   protected List<File> parseValue(Object obj) throws ParameterException {