Flickering text print applet

Question

my news applet scrolls text across the screen, the text however is flickering. my draw code is below.
          screen2D.clearRect(0,0,getSize().width,getSize().height);
screen2D.drawString(obj.news[obj.currentItem],obj.x,obj.y);
          repaint();
your help would be much appreciated
Arnold Oree

Answer 1

Double Buffering would seem to be the answer to your problems. I'm no expert but the following worked for me where I previous was drawing directly to the screen. Do all your drawing in the offscreen buffer area and then transfer it to the screen with the last statement in your paint method.
I've lifted some code for an applet I created a while back. Hopefully you can see what's going on.
Override the update method
as noted.
// buffer stuff
Graphics bufferGraphics;
Image offScreen;
Dimension dim;
public void paint (Graphics g)
bufferGraphics.clearRect(0,0,dim.width, dim.height);
bufferGraphics.setFont(new Font ("serif", Font.BOLD,18));
// set up board
for (int row = 0; row <=7; ++ row)
for (int column = 0; column <=7; ++ column)
// white squares
if ((row+column)%2 == 0)
bufferGraphics.setColor (new Color(0,0,0));
// black squares
if ((row+column)%2 == 1)
bufferGraphics.setColor (new Color (255,255,255));
// attacked squares
bufferGraphics.fillRect (40+(column*40), 75+(row*40), 40, 40);
if (board [row][column] !=0)
bufferGraphics.setColor (new Color(255,0,0));
bufferGraphics.drawString("X", 52 +(column*40), 101 +(row*40));
} // end row loop
} // end column loop
bufferGraphics.setColor (new Color (255,0,0));
bufferGraphics.drawLine (38,73,360,73); // top
bufferGraphics.drawLine (38,74,360,74); // top
bufferGraphics.drawLine (38,75,360,75); // top
bufferGraphics.drawLine (40,75,40,395); // left
bufferGraphics.drawLine (39,75,39,395); // left
bufferGraphics.drawLine (38,75,38,395); // left
bufferGraphics.drawLine (38,395,360,395); // bottom
bufferGraphics.drawLine (38,396,360,396); // bottom
bufferGraphics.drawLine (38,397,360,397); // bottom
bufferGraphics.drawLine (360,75,360,395); // right
bufferGraphics.drawLine (361,73,361,397); // right
bufferGraphics.drawLine (362,73,362,397); // right
bufferGraphics.setColor (new Color (255,0,0));
g.drawImage (offScreen, 0, 0, this);
} // end paint
public void update (Graphics g)
paint (g);
} // end update