I am using a JSpinner with SpinnerNumberModel. The up/down arrows work okay to navigate within the range say 0 to 100, but not at 0 or 100. The user is pretty much stuck and the workaround is to use mouse or change the value to anything other than 0 or 100.

% java -version
java version "1.4.0-beta"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.0-beta-b50)
Java HotSpot(TM) Client VM (build 1.4beta-B50, mixed mode)

Code used:
---------
import javax.swing.*;

public class testSpin extends JFrame {
  JSpinner spin;
  SpinnerNumberModel model;
  
  Integer value = new Integer(50);
  Integer min = new Integer(0);
  Integer max = new Integer(100);
  Integer step = new Integer(1);

  public testSpin() {
    setSize(100, 100);
    
    model = new SpinnerNumberModel(value, min, max, step);
    spin = new JSpinner(model);
    getContentPane().add(spin);
  }

  public static void main(String args[]) {
    testSpin t = new testSpin();
    t.setVisible(true);
  }
}