Call function every x time without blocking the GUI Java

Question

I have a class caled ItemGUI which is handling everything related with the user interface. The user, is able to add some links, which are the items, so when he inserts a link an

Answer 1

You can use a Timer to schedule a repeating task.

Corresponding to each Timer object is a single background thread that is used to execute all of the timer's tasks, sequentially

Something along the lines of this code should do the trick.

Timer timer = new Timer();
TimerTask task = new TimerTask(){
    public void run() {
        getPrice(); //your task
    }
};

timer.schedule(task, 0, 5000); //first is delay, second is repeat period

...
// on button click, simple cancel the task
task.cancel()