+import jalview.datamodel.AlignmentAnnotation;
+import jalview.datamodel.SequenceGroup;
+import jalview.io.AnnotationFile;
+import jalview.io.FeaturesFile;
+import jalview.io.JalviewFileChooser;
+import jalview.io.JalviewFileView;
+import jalview.util.MessageManager;
+
+import java.awt.BorderLayout;
+import java.awt.Color;
+import java.awt.FlowLayout;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+import java.util.Hashtable;