JAL-2591 Refactor HiddenColumns to use ArrayList instead of Vector

[jalview.git] / src / jalview / appletgui / AlignFrame.java

diff --git a/src/jalview/appletgui/AlignFrame.java b/src/jalview/appletgui/AlignFrame.java
index e77ae54..8f28658 100644 (file)
--- a/src/jalview/appletgui/AlignFrame.java
+++ b/src/jalview/appletgui/AlignFrame.java
@@ -1924,8 +1924,8 @@ public class AlignFrame extends EmbmenuFrame implements ActionListener,
 
     if (viewport.hasHiddenColumns() && viewport.getSelectionGroup() != null)
     {
-      copiedHiddenColumns = viewport.getAlignment().getHiddenColumns()
-              .getHiddenColumnsCopy();
+      copiedHiddenColumns = new Vector<>(viewport.getAlignment()
+              .getHiddenColumns().getHiddenColumnsCopy());
       int hiddenOffset = viewport.getSelectionGroup().getStartRes();
       for (int[] region : copiedHiddenColumns)
       {