+import jalview.datamodel.AlignmentI;
+import jalview.io.DataSourceType;
+import jalview.io.FileFormat;
+import jalview.io.FormatAdapter;
+import jalview.io.cache.JvCacheableInputBox;
+import jalview.util.MessageManager;
+
+import java.awt.BorderLayout;
+import java.awt.Dimension;
+import java.awt.Font;
+import java.awt.GridLayout;
+import java.awt.Insets;
+import java.awt.event.ActionEvent;
+import java.awt.event.KeyEvent;