About doing something periodically

Question

I have posted the topic in core gui api_java applet development i didn't want to post it again here, but the topic I posted is not visited as much as this one.
post:
I have a class which is very long so I will summarize the problem.I have an applet that implements runnable, and in the void run method it calls a thread and shifts my applet. and now I want to shift this system periodically but when I tried to do this in run method, threads are called at the same time and it becomes a problem. it doesn't work properly. I want to shift the system every 1 second for example. and system shifts in 900 milliseconds. could you tell me a way or suggest me a tutorial about first part of this: shifting system every 1 second by a time class or method or whatever.

Answer 1

I have a 2d mave and I have a point in thre middle, shifting means is to go one side here,point stays constant ant the maze shifts near it. now I want to shift this system periodically, for example every 1 second, however the shifting process for one side uses a thread and it takes 900 miliseconds to complete it. ok here is my run method;public void run() {
        Thread.currentThread().setPriority(Thread.MIN_PRIORITY);
        boolean checkd = false;
        boolean checku = false;
        boolean checkl = false;
        boolean checkr = false;
        while (true) {
            try {
                t.sleep(1);
                if (go) {   // go is coming from a button and when it is pressed it lets the point move periodically
                    t.sleep(1000);  ////HERE I NEED AN ALTERNATIVE
                    release();  // release method is at the end of post
                if (dwn < 30) {
                    ydirec = 0;
                    xdirec = 2;
                    t.sleep(30);
                    j--;
                    dwn++;
                    repaint();
                    if (dwn == 30) {
                        System.out.println("came 30th dwn");
                        checkd = true;
                if (up < 30) {
                    ydirec = 1;
                    xdirec = 2;
                    t.sleep(30);
                    j++;
                    up++;
                    repaint();
                    if (up == 30) {
                        System.out.println("came 30th up");
                        checku = true;
                if (checkd) {
                    j = 5;
                    a.movedown();
                    wh = a.getwh();
                    wv = a.getwv();
                    checkd = false;
                    System.out.println("changed arraysfordwn");
                if (checku) {
                    j = 5;
                    a.moveup();
                    wh = a.getwh();
                    wv = a.getwv();
                    checku = false;
                    System.out.println("changed arraysforup");
                if (right < 30) {
                    ydirec = 2;
                    xdirec = 1;
                    t.sleep(30);
                    i--;
                    right++;
                    repaint();
                    if (right == 30) {
                        checkr = true;
                if (left < 30) {
                    ydirec = 2;
                    xdirec = 0;
                    t.sleep(30);
                    i++;
                    left++;
                    repaint();
                    if (left == 30) {
                        checkl = true;
                if (checkr) {
                    i = 5;
                    a.moveright();
                    wh = a.getwh();
                    wv = a.getwv();
                    checkr = false;
                if (checkl) {
                    i = 5;
                    a.moveleft();
                    wh = a.getwh();
                    wv = a.getwv();
                    checkl = false;
            } catch (Exception e) {
        }and the release method is :
public void release() {
        double d = Math.random();
        if (d <= 0.25) {
            //d <= 0.25
            if (((Boolean) (checkwall().get(0))) == false) {// whatever written inside is not important,it is a boolean coming from somewhere
                up = 0;   //activates the if(up<30) condition in run and system shifts
            d = 1.0;
        } else if (d <= 0.5 && d > 0.25) {
            if (((Boolean) (checkwall().get(1))) == false) {
                dwn = 0;
            d = 1.0;
        } else if (d <= 0.75 && d > 0.5) {
            if (((Boolean) (checkwall().get(3))) == false) {
                right = 0;
            d = 1.0;
        } else if (d < 1.0 && d > 0.75) {
            if (((Boolean) (checkwall().get(2))) == false) {
                left = 0;
            d = 1.0;
    }Edited by: dogukan on Apr 1, 2008 9:39 PM