Arrays - Java Software Solutions: Foundations of Program Design - page 430

LISTING 8.22 continued

//-----------------------------------------------------------------
// Draws the image in the current location.
//-----------------------------------------------------------------
public void paintComponent (Graphics page)
{
super .paintComponent (page);
currentImage.paintIcon ( this , page, x, y);
}

//*****************************************************************
// Represents the listener for keyboard activity.
//*****************************************************************
private class DirectionListener implements KeyListener
{
//--------------------------------------------------------------
// Responds to the user pressing arrow keys by adjusting the
// image and image location accordingly.
//--------------------------------------------------------------
public void keyPressed (KeyEvent event)
{
switch (event.getKeyCode())
{
case KeyEvent.VK_UP:
currentImage = up;
y -= JUMP;
break ;
case KeyEvent.VK_DOWN:
currentImage = down;
y += JUMP;
break ;
case KeyEvent.VK_LEFT:
currentImage = left;
x -= JUMP;
break ;
case KeyEvent.VK_RIGHT:
currentImage = right;
x += JUMP;
break ;
}

repaint();
}