heres my class file.  All I am trying to do is get the scroll panel to
have a scroll bar and the ability to scroll.

Why does changing the size of the JScrollPane have no affect on it when
I run the program?  What do I have to do to gain scrolling
capabilities?

Thanks

package orthopedicnotegenerator;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.awt.font.*;
import java.text.Collator;
import javax.swing.event.*;
import java.util.Date;
import java.text.DateFormat;

class ExamKnee2 extends JDialog{

   final int WIDTH = 830;

   AccessConnection dataConnection = new AccessConnection();

   JPanel pane;
   JScrollPane scroller;

   public ExamKnee2() {

       setModal(true);
       Container pane = this.getContentPane();
       this.setAlwaysOnTop(true);
       pane.setLayout(new BorderLayout());
       //pane.setLayout(null);

       setDefaultCloseOperation(DISPOSE_ON_CLOSE);
       setBounds(300,0,WIDTH,400);

       addWidgets();

       setVisible(true);
       validate();

   }

   public void addWidgets(){

       pane = new JPanel();
       pane.setLayout(new BorderLayout());

       JButton button = new JButton("Button 1 (PAGE_START)");
       pane.add(button, BorderLayout.PAGE_START);

       button = new JButton("Button 2 (CENTER)");
       button.setPreferredSize(new Dimension(200, 100));
       pane.add(button, BorderLayout.CENTER);

       button = new JButton("Button 3 (LINE_START)");
       pane.add(button, BorderLayout.LINE_START);

       button = new JButton("Long-Named Button 4 (PAGE_END)");
       pane.add(button, BorderLayout.PAGE_END);

       button = new JButton("5 (LINE_END)");
       pane.add(button, BorderLayout.LINE_END);

       scroller = new JScrollPane(pane);
       scroller.setSize(200,200);
       add(scroller, BorderLayout.CENTER);

   }

   public static void main(String args[]){
       ExamKnee2 examKnee = new ExamKnee2("Right", "123-45-6789", "2
weeks");
   }  
}