New solution for Limit the value in JSpinner with changable max/min value

Question

I have ever stuck with a problem like that :
1. My application need to get two int value A and B that user input.
I use two JSpinner with Number format model.
named in jSpinnerFrom (A value get from) jSpinnerTo (B value get from)
2. The request is that :
two value can be any Integer, But the value of (B - A) can not more than 1000.
I use changeListener added into the JSpinner, when use set value make (B-A) larger than 1000, I set value back.
But when user press mouse on arrow button, the value will be increase automaticaly, and at last the value can not set back that make (B-A) not larger than 1000.
3. So I get the BasicArrowButton of the jSpinnerFrom and jSPinnerTo,
and add a mouselistener on the arrowbutton. When mouseReleased, then chen the value (B-A), if it is larger than 1000, then set it back the proper value.
Thus I can make the min/max value in the JSpinner be changable, and limit the two input value be in range of 1 - 1000
Post this wish be help for any one has thus familar request.
Good Luck!!

Answer 1

Something like this might work
import javax.swing.*;
import java.awt.*;
import javax.swing.event.*;
class Spin extends JFrame implements ChangeListener
  JSpinner spinner1;
  JSpinner spinner2;
  JPanel jp;
  public Spin()
    setDefaultCloseOperation(EXIT_ON_CLOSE);
    setSize(200,75);
    setLocation(400,300);
    spinner1 = new JSpinner(new SpinnerNumberModel(1000, 1000, 9999, 5));
    spinner1.addChangeListener(this);
    spinner2 = new JSpinner(new SpinnerNumberModel(0, 0, 1000, 5));
    jp = new JPanel();
    jp.add(spinner1);
    jp.add(spinner2);
    getContentPane().add(jp);
  public void stateChanged(ChangeEvent ce)
    int s1 = ((Integer)spinner1.getValue()).intValue();
    jp.remove(spinner2);
    spinner2 = new JSpinner(new SpinnerNumberModel(s1-1000, s1-1000, s1, 5));
    jp.add(spinner2);
    validate();
  public static void main(String[] args) {new Spin().setVisible(true);}
}