Textfield Javafx catching the event

Question

I would like to know which event that when leaving the object TextField of JavaFx, changes a value of another object.

if (textFieldC1.getText().equals("50")) {
    slider1.setValue(Double.valueOf(textFieldC1.getText()));
}

Answer 1

Try it that way:

textFieldC1.setOnAction( (ActionEvent e)-> {
 if(textFieldC1.getText().equals("50")) {
     slider1.setValue(Double.valueOf(textFieldC1.getText()))
 } });