How to check if enter key is pressed on textField in java-Fx

Question

I have some Text Field on a dialog when use input data in Text Field.

I want to check if the user pressed the enter key and, then, save this data. But, if the enter key is not pressed to set back to the old data.

Currently, I use javaFx to code.

to get a help, you should post what have you tried. – Kachna Aug 09 '15 at 14:04 — Kachna, Aug 09 '15 at 14:04

score 8 · Answer 1 · edited Apr 14 '19 at 19:11

8

I register a listener (here Java 8 lambda version) at the textfield:

filterTextField.setOnKeyReleased(event -> {
  if (event.getCode() == KeyCode.ENTER){
     // do what is to do
  }
});

edited Apr 14 '19 at 19:11

belwood

3,320
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answered Aug 09 '15 at 20:54

Olaf Grönemann

81
2

I have six text field on the dialog . what is the method for that? – vxba Aug 10 '15 at 01:31

score 1 · Answer 2 · edited Feb 17 '16 at 09:06

1

Try this, it handles Enter keypress by default.

TextField tf = new TextField();
String tfData = "";

tf.setOnAction(new EventHandler<ActionEvent>() {
    @Override
    public void handle(ActionEvent event) {
            tfData = tf.getText();
    }
});

edited Feb 17 '16 at 09:06

jogo

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answered Feb 17 '16 at 08:47

pheamit

27
2
8

score 0 · Answer 3 · answered Jul 21 '18 at 17:19

I know this is already an old thread but I hope this helps someone.

textField.setOnKeyPressed(new 
EventHandler<KeyEvent>() {
@Override
public void handle(KeyEvent event) {

if(event.getCode().equals(
KeyCode.ENTER) 
) {
         // do something
    }
}
});

score 0 · Answer 4 · answered Jul 04 '20 at 00:39

Very easy check this, the easiest way is go to your text field code in scene builder then give a name to " On Key Pressed " Keyboard Proprieties and paste the FXML method in your FXML Controller Class then add this:

@FXML
    void the_name_of_the_method(KeyEvent event) {
        if(event.getCode() == KeyCode.ENTER) {
            do_what_ever_you_want_here();
        }

    }

score 0 · Answer 5 · answered Oct 31 '20 at 19:25

In older version of Java you could write something like this: for example lets suppose you have a ComboBox<String> with some random values... so you can simple add an event on that ComboBox (call it cBox)

cBox.setOnKeyPressed(new EventHandler<KeyEvent>() {
  @Override
  public void handle(KeyEvent keyEvent) {
    if (keyEvent.getCode().equals(KeyCode.ENTER)) {
      // do what you want
    }
  }
});

But from Java 1.8 you can use lambda functions instead so you could replace the above code with this:

cBox.setOnKeyPressed(keyEvent -> {
   if (keyEvent.getCode().equals(KeyCode.ENTER)) {
      // do what you want
   }
});

Don't forget to use equals instead of ==. (https://www.geeksforgeeks.org/difference-equals-method-java/)

How to check if enter key is pressed on textField in java-Fx

5 Answers5