Check out example codes for "java every second". It will help you in understanding the concepts better.
Code Example 1
Timer timer = new Timer();
timer.schedule(new TimerTask() {
@Override
public void run() {
//what you want to do
}
}, 0, 1000);//wait 0 ms before doing the action and do it evry 1000ms (1second)
timer.cancel();//stop the timer
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