How to make count down timer in JavaFx

How to make count down timer in JavaFx. The video and audio doesnt match in the middle of the video due to recording frame rates i guess.I have pasted codes below for few who are looking for:

[andreschia]

2 years later and still is very usefull, thanks a lot!
Greetings from Colombia.

[milo_radova]

It is really useful even after 6 years. Thank you very much!

[elipeveto]

OMGGGG Thank you soooo much you are still helping people years later lol

[paschalg]

Here is the code:

package application;

import javafx.animation.KeyFrame;
import javafx.animation.Timeline;
import
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.stage.Stage;
import javafx.util.Duration;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.control.Label;
import javafx.scene.layout.HBox;
import javafx.scene.paint.Color;
import javafx.scene.text.Font;


public class CountDownTimer extends Application {

Label lb;
Stage windows;
private final Integer starttime=15;
private Integer seconds= starttime;

@Override
public void start(Stage primaryStage) {
windows= primaryStage;
Group root= new Group();
lb= new Label();
lb.setText("Countdown: 15");
lb.setFont(Font.font(30));
lb.setTextFill(Color.RED);

doTime();

HBox layout= new HBox(5);
layout.getChildren().add(lb);

Scene scene= new Scene(root, 300, 70, Color.BLACK);
windows.setScene(scene);
windows.show();

}

private void doTime() {
Timeline time= new Timeline();


KeyFrame frame= new KeyFrame(Duration.seconds(1), new EventHandler<ActionEvent>(){

@Override
public void handle(ActionEvent event) {


seconds--;
lb.setText("Countdown: "+seconds.toString());
if(seconds<=0){
time.stop();
}


}


});



if(time!=null){
time.stop();
}
time.play();


}

public static void main(String[] args) {
launch(args);
}
}


Hope, all enjoy the video, thanks!

[TccSoft]

thank you very very much you are really helped me so much, you are perfect

[ajobkustra]

Hey man, nice tutorial but I would keep it a bit shorter and some preperation would be good. I bet that way this video would have way more views.

[jskauqwjksu]

Thx for the video. It helped me a lot. ^^

[me_too_thanks]

Ok this had some helpful information but overall very frustrating to watch: First of all please prepare in advance so you know what to write, and stop saying sorry all the time, it's really annoying and awkward.

[streetfashiontv]

Good video thanks. However, the code doesn't work seamlessly on all IDE's. I was using BlueJ and had to make a few minor changes. For example, I had to import the following class: import javafx.util.Duration in order for the Integer wrapper class object seconds to work. I also had to delete Group root = new Group() because HBox was already incorporated in the scene graph. I also had to delete root.getChildren().add(layout), which was irrelevant; Just so any future programmer doesn't have to painstakingly watch the video for 40 minutes and write each line of code here is my compiled version:

import
import javafx.animation.KeyFrame;
import javafx.animation.Timeline;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.control.Alert;
import javafx.scene.control.Label;
import javafx.scene.layout.HBox;
import javafx.scene.paint.Color;
import javafx.scene.text.Font;
import javafx.util.Duration;
import javafx.stage.Stage;

public class CountdownTimer extends Application{
private final Integer startTime = 10;
private Integer seconds = startTime;
private Label label;

@Override
public void start(Stage windows) throws Exception {
label = new Label();


HBox layout = new HBox(5);
layout.setLayoutX(20);


doTime();
windows.setScene(new Scene(layout, 300, 70, Color.BLACK));
windows.setTitle("Count down Timer");
windows.show();
}
private void doTime(){
//Duration duration = Duration.ofSeconds(10000);
Timeline time = new Timeline();

if(time!= null){//if the time is equal to zero it is finished but if it is not equal to something then it is //doing something
time.stop();
}
KeyFrame frame = new KeyFrame(Duration.seconds(1), new EventHandler<ActionEvent>(){
//every one second of the timeline the keyframe will do something (i.e., perform a job and that job //is defined by the event handler)
@Override
public void handle(ActionEvent event){
seconds--;


if(seconds <= 0){
time.stop();
Alert alert = new
alert.setHeaderText("Count down reset to 0!");
alert.show();
}
}
});

time.playFromStart();

}

public static void main(String[] args) {
launch(args);
}
}

Enjoy!

[jarrarjawhar]

hi i loved ur video can you please send me the code i am trying to make a timer to a date for my project