Re: Problem with JavaFX ChangeListener?

=?UTF-8?B?QXJuZSBWYWpow7hq?= <>
Thu, 11 Dec 2014 18:36:41 -0500
On 12/11/2014 6:08 PM, Knute Johnson wrote:

I'm trying to teach myself JavaFX and have hit a snag. In the program
below I add a ChangeListener to a TextField. The Java8 method works
fine, adding an anonymous ChangeListener class works fine but I can't
create a class that implements ChangeListener and get it to compile.

         class LengthListener<String> implements ChangeListener<String> {

                                ^^^^^^^^ remove this (it has a very bad
impact when String is used later!)

             private final int length;

             public LengthListener(int length) {
                 this.length = length;

             @Override public void changed(
              ObservableValue<? extends String> observable,
              String oldValue,String newValue) {
                 if (newValue.length() > length)
         textField.textProperty().addListener(new LengthListener(4));


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