-import java.awt.BorderLayout;
-import java.awt.Canvas;
-import java.awt.CheckboxMenuItem;
-import java.awt.Color;
-import java.awt.Font;
-import java.awt.FontMetrics;
-import java.awt.Frame;
-import java.awt.Graphics;
-import java.awt.Label;
-import java.awt.Menu;
-import java.awt.MenuBar;
-import java.awt.MenuItem;
-import java.awt.event.ActionEvent;
-import java.awt.event.ActionListener;
-import java.awt.event.FocusEvent;
-import java.awt.event.FocusListener;
-import java.awt.event.ItemEvent;
-import java.awt.event.ItemListener;
-import java.awt.event.KeyEvent;
-import java.awt.event.KeyListener;
-import java.awt.event.WindowAdapter;
-import java.awt.event.WindowEvent;
-import java.io.IOException;
-import java.net.URL;
-import java.net.URLEncoder;
-import java.util.Arrays;
-import java.util.Deque;
-import java.util.HashMap;
-import java.util.Hashtable;
-import java.util.List;
-import java.util.Map;
-import java.util.StringTokenizer;
-import java.util.Vector;
-