Help needed:Synchronizing calls to canvas

Question

Hello,
I am trying to make sequential calls to a canvas object from my midlet, and I do not know how can I make the second call wait until the first is finished. Any help?
Here is a piece of my code. The problem that I find is that the second call to method "pinta" (which in turn calls repaint) overrides the first one, so this first call is not executed. If I use threads and write sleep(time) between calls to "pinta", I experience problems if "time" is shorter that the time to process the repaint. How should I write it properly? Thanks
public class MiTest extends MIDlet {
private Display display;
public MiTest()
display=Display.getDisplay(this);
public void startApp() {
CanvasTest test=new CanvasTest(display);
test.pinta(1);
test.pinta(2);
public void pauseApp() {
public void destroyApp(boolean unconditional) {
class CanvasTest extends Canvas {  
private int x;
private Display display;
private int vNum;
public CanvasTest(Display d)
x=0;
vNum=0;
display=d;
display.setCurrent(this);
protected void paint(Graphics g) {
x=0;
for (int i=1;i<1000;i++) {x++;System.out.println("Call No.="+vNum+",x="+x);}
public void pinta(int num)
vNum=num;
repaint();

Answer 1

after your first repaint() call
add the command, so it will look something like this...
repaint(); //<< this is your repaint call
serviceRepaints();//causes all pending paint calls to be processed immediatlysome implementations don't properly implement the serviceRepaints() method.
If this is the case and serviceRepaints does not work, andd the following instead(or as well as if you want)
repaint();//<< this is your repaint call
painting=true;
while(painting){ Thread.yield(); }and now, at the end of your paint(...) method...
painting=false;both of these methods will cause the current thread to pause until the repaint has been fully processed.
hope this helps..
rob.