+import java.awt.BorderLayout;
+import java.awt.Button;
+import java.awt.Checkbox;
+import java.awt.Color;
+import java.awt.FlowLayout;
+import java.awt.Frame;
+import java.awt.Label;
+import java.awt.Panel;
+import java.awt.Scrollbar;
+import java.awt.TextField;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+import java.awt.event.AdjustmentEvent;
+import java.awt.event.AdjustmentListener;
+import java.awt.event.FocusAdapter;
+import java.awt.event.FocusEvent;
+import java.awt.event.MouseEvent;
+import java.awt.event.MouseListener;
+import java.awt.event.WindowAdapter;
+import java.awt.event.WindowEvent;
+import java.util.Iterator;
+