Scroll Up list and Scroll Down list buttons

Question

I want to be able to scroll a list without using the scrollbars, but want to use buttons to do this, how can i do this. I don't want any scrollbars, but want to be able to scroll through my JList using the two buttons up and down.
Thanks

Answer 1

additional code needed for numpad arrows (if required)
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
class Testing extends JFrame
  public Testing()
    setLocation(400,300);
    setDefaultCloseOperation(EXIT_ON_CLOSE);
    JPanel scrollPanel = new JPanel(new GridLayout(50,1));
    for(int x = 0;x < 50; x++) scrollPanel.add(new JLabel(""+(x+1)));
    JScrollPane sp = new JScrollPane(scrollPanel,JScrollPane.VERTICAL_SCROLLBAR_NEVER,
                                              JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
    sp.setPreferredSize(new Dimension(100,150));
    getContentPane().add(sp);
    pack();
    final JScrollBar sBar = sp.getVerticalScrollBar();
    KeyboardFocusManager.getCurrentKeyboardFocusManager()
     .addKeyEventDispatcher (new KeyEventDispatcher(){
        public boolean dispatchKeyEvent(KeyEvent ke){
          if(ke.getID() == KeyEvent.KEY_PRESSED)
            if(ke.getKeyCode() == KeyEvent.VK_UP) sBar.setValue(sBar.getValue()-5);
            if(ke.getKeyCode() == KeyEvent.VK_DOWN) sBar.setValue(sBar.getValue()+5);
          return false;}});
  public static void main(String args[]){new Testing().setVisible(true);}
}