Re: repaint not work as expected

SamuelXiao <>
Wed, 19 Jan 2011 00:53:59 -0800 (PST)
On Jan 19, 3:52 am, "John B. Matthews" <nos...@nospam.invalid> wrote:

In article

 SamuelXiao <> wrote:

In general, I prefer javax.swing.Timer for animation. Some advantages
are mentioned here:


Here's a simple example:



   timer.schedule(new TimerTask(){

This code uses java.util.Timer, rather than javax.swing.Timer, as
suggested above. The later "can make dealing with the event-dispatching
thread a bit simpler."

Also, consider the benefits of <>.

As it is incomplete, I am unable to compile your example.

John B. Matthews
trashgod at gmail dot com

Hi, I changed the code to use java swing timer, it can now repaint the
token smoothly, but only for the human-controlled token, but for the
PC token, it still has the problem that timer has not yet finished but
the functions after timer.start() has already been done. Below is
some code.

Under class monpolyBoard.

// PC turn will trigger this method
public void AIturn(int tempNumOfPlayers){
  btnRoll(); // timer is in btnRoll()
             // and below few lines have been done before the timer
== 0){"enter btnBuy()");
   if(rolled) btnDone(tempNumOfPlayers);

public void btnDone(int tempNumOfPlayers){
  rolled = false;
  turn = (turn % tempNumOfPlayers) + 1;
  // turn start 1
  if(players.get(turn - 1) instanceof AutoPlayer){

public void btnRoll() {
 boolean snakeEyes = false;
 dice1 = rand.nextInt(6) + 1;
 dice2 = rand.nextInt(6) + 1;
 minusDice = dice1 + dice2;
 if(dice1 == dice2) {
    snakeEyes = true;
    rolled = false;
 else {
    rolled = true;
 if(snakeEyes == true){
  tempFlagPlayer = true;
    tempFlagPlayer = false;
 timer = new Timer(100, new RollActionListener());

private class RollActionListener implements ActionListener{
   public void actionPerformed(ActionEvent e){
    if(minusDice-- <= 0){
    }"minusDice is: " + minusDice);

Under MonopolyEntry, it register the eventListener.

public void actionPerformed(ActionEvent e) {
    if(e.getSource() == btnRoll){
        if(!monopolyBoard.rolled) {
    if(e.getSource() == btnDone){
        if(monopolyBoard.rolled) {

    // and so on

If I use the swing timer, the AIturn()'s btnRoll()'s timer will not
finish before the next few line:

== 0){"enter btnBuy()");
   if(rolled) btnDone(tempNumOfPlayers);

That's why i have added a lock object before...that one works but it
doesn't repaint every time. Do you know how I can wait for the timer
finished it work first then go to the next few lines? Thanks.

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