如何从变量设置jspinner最大值？

Question

I have a few jspinners , they are: min char , max cha r, min low char , min up chars etc. Now I need to set the max values of min low char , min up char , etc, to the max chars , but jspinner models dont allow any variables to set any model value. so how can what can I do to set the max values of those spinners to the value of max char .

Answer 1

The SpinnerNumberModel has setMaximum and setMinimum methods. You could ask the spinner for it's model, and if it's an instanceof SpinnerNumberModel cast it.

Otherwise, you could maintain a reference to the original models used to populate the spinners in the first place and update them accordingly.

Answer 2

You can override getMaximum with an anonymous model class to make it reference a member of the parent type. Eg

JSpinner minChar = new JSpinner(new SpinnerNumberModel() {
  @Override
  public Comparable<Integer> getMaximum() {
    return maximum;
  }
});