how to change the text of TextField in java fx 2

Question

I have a TextField in which there is some text but I want to change that text on some event but I am getting the NullPointerException.

I am using setText() method but still its not working. I am calling that function from other class .

Any Help?

Thanks in advance.

if you get NPE when calling setText on a textfield, then that textfield probably does not exist or you misspelled it, hence the NPE. Please post relevant code and im sure we can help you with this task — John Snow, May 15 '12 at 13:30

score 6 · Answer 1 · edited Jun 16 '12 at 05:46

6

At beginning of the controller's class definition:

@FXML private TextField txtDescription;

Within the initialize method, add:

txtDescription = new TextField();

Within a method that acts on that text field, something like:

txtDescription.setText("This is my new text.");

edited Jun 16 '12 at 05:46

Josh Darnell

answered Jun 15 '12 at 17:55

Mike Baran

1

you don't need to initialize it – glasspill Jan 19 '13 at 19:59
Thanks bro :) @sergey actually it was mistake in my part. The setText() method works fine its just rather than making it local i make that global and static. – Bipin Bhandari May 17 '12 at 04:45

score 0 · Answer 2 · answered Dec 27 '17 at 11:13

Make sure that you have a TextField definition in your .fxml file with the following:

 fx:id="myCoolTextField"

If you don't have that, init the text field in your display() method with the following:

myCoolTextField = new TextField();

You may also override the special initialize() method. This method is being called every time your scene updated.

@FXML
public void initialize() {
    myCoolTextField.setText("Here is my updated text.");
}

2 Answers2