Protected Key Word

Question

Dear Sirs,
Once again my knowledge is seriously lacking in a key area:
When I try to compile the following:
class DrawFrame extends Frame
     public static final int WIDTH = 800;
     public static final int HEIGHT = 600;
     public String[][] a;
     public String[][] routerArr;
     public DrawFrame(String[][] ipArray, String[][] router)
          a = ipArray;
          routerArr = router;
          setTitle("Graphical network analysis app V1.0");
          setSize(WIDTH, HEIGHT);
          setBackground(Color.white);
          ScrollPane scroller = new ScrollPane();
          DrawPanel panel = new DrawPanel(a, routerArr);
          panel.repaint();
          scroller.addImpl(panel, null, 0);
          add(scroller);
          repaint();
}I am told
"Cannot access protected member 'void addImpl(Component, Object, int)' in class scrollPane from Class 'DrawFrame'"
Could someone a) tell me how to correct this
b) point me in the right direction for learning about such matters (i'm off to the sun tutorial pages now!)
Thanks for any help,
Windy

Answer 1

I've done this instead, whic compiles ok, but after all that, it doesn't actually show a scrollbar!
Any hints?
class DrawFrame extends Frame
     public static final int WIDTH = 800;
     public static final int HEIGHT = 600;
     public String[][] a;
     public String[][] routerArr;
     public static DrawPanel panel;
     public DrawFrame(String[][] ipArray, String[][] router)
          a = ipArray;
          routerArr = router;
          setTitle("Graphical network analysis app V1.0");
          setSize(WIDTH, HEIGHT);
          setBackground(Color.white);
          panel = new DrawPanel(a, routerArr);
          ScrollPaneDoody scroller = new ScrollPaneDoody();
          panel.repaint();
          add(scroller);
          repaint();
class ScrollPaneDoody extends ScrollPane
     public ScrollPaneDoody()
          addImpl(DrawFrame.panel, null, 0);
}Thanks for any help,
Windy