title: Java GUI JScrollBar How to set the length?
body: <p>I have the following GUI codded up but I would like to increase the length of the scroll bar on the right side.</p>
  
  <p>Any Idea How to do this?</p>
  
  <pre><code>// test class that implements the gui stuff.
  public class testing
  {
  
      //variables
      private JFrame f = new JFrame("GUI TEST");
  
      private JPanel p = new JPanel();
      private JPanel p2 = new JPanel();
      private JPanel p3 = new JPanel();
      private JPanel p4 = new JPanel();
      private JPanel p5 = new JPanel();
      private JPanel p6 = new JPanel();
      private JPanel p7 = new JPanel();
      private JPanel p8 = new JPanel();
      private JPanel p9 = new JPanel();
      private JPanel p10 = new JPanel();
      private JPanel p11 = new JPanel();
  
      private JButton b1 = new JButton("Button");
  
      private JTextField tf1 = new JTextField("                                           ");
      private JTextField tf2 = new JTextField("                                           ");
      private JTextField tf3 = new JTextField("                                           ");
  
      private JTextArea ta1 = new JTextArea(10,45);
  
      private JLabel label1 = new JLabel("Label 1");
      private JLabel label2 = new JLabel("Label 2");
      private JLabel label3 = new JLabel("Label 3");
      private JLabel label4 = new JLabel("Label 4");
  
      private JScrollBar sb1 = new JScrollBar();
  
      //class constructor
      public testing()
      {
          gui();
      }
  
      public void gui()
      {
          //change length of scroll bar
          f.setVisible(true);
          f.setSize(600,300);
          p.add(label1);
          p.add(tf1);
          p2.add(label2);
          p2.add(tf2);
          p3.add(label3);
          p3.add(tf3);
          p4.add(sb1);
          p4.add(label4);
          p5.add(ta1);
          p6.add(b1);
          p4.setBackground(Color.GRAY);
          p9.setBackground(Color.GRAY);
          p10.setBackground(Color.GRAY);
          p11.setBackground(Color.GRAY);
          p9.add(p);
          p9.add(p2);
          p9.add(p3);
          p10.add(p5);
          p11.add(p6);
          //adds panels to frames
          f.add(p4, BorderLayout.EAST);
          f.add(p9, BorderLayout.NORTH);
          f.add(p10, BorderLayout.CENTER);
          f.add(p11, BorderLayout.PAGE_END);
      }
  
      public static void main(String[] args)
      {
          new testing();
      }
  </code></pre>