Index: applications/editors/josm/plugins/seachart/jplotter/src/jplotter/Jplotter.java
===================================================================
--- applications/editors/josm/plugins/seachart/jplotter/src/jplotter/Jplotter.java	(revision 32906)
+++ applications/editors/josm/plugins/seachart/jplotter/src/jplotter/Jplotter.java	(revision 32907)
@@ -1,8 +1,19 @@
+// License: GPL. For details, see LICENSE file.
 package jplotter;
 
-import java.awt.*;
-import javax.swing.*;
+import java.awt.BorderLayout;
+import java.awt.Container;
 
-public class Jplotter {
+import javax.swing.BorderFactory;
+import javax.swing.JFrame;
+import javax.swing.JPanel;
+
+/**
+ * @author Malcolm Herring
+ */
+public final class Jplotter {
+    private Jplotter() {
+        // Hide default constructor for utilities classes
+    }
 
     public static void main(String[] args) {