JScrollBar: Stop knob moving further upon hit certain value

Question

I'd like to ask is it possible to stop knob moving further upon hit certain value in JScrollBar ?

For example, set the minimum and maximum value of a vertical scroll bar to 0 and 100. If the user scroll the knob till 60, he or she should not be able to move knob up further but able to move knob down.

Hence, I have simply wrote following adjust listener:

class MyAdjustmentListener2 implements AdjustmentListener 
{
  public void adjustmentValueChanged(AdjustmentEvent e) 
  {
     label.setText("New Value is " + e.getValue() + " ");
     if (e.getValue() < 60 ) 
     {
        vbar.setValue(60);
     }
  }
}

The label is a JLabel I used to monitor the adjusted value, the vbar is a vertical JScrollBar instance. Above code will force the knob jump back to value 60 if user try to move it above the value 60. This slightly different from what I want to achieve.

I have looked into the API of JScrollBar, I didn't found any straight method provided to use. Please share some hints to me here. Thank you for your time and suggestion.