FULL PRODUCT VERSION :
java version "1.4.1_07"

ADDITIONAL OS VERSION INFORMATION :
Windows XP

A DESCRIPTION OF THE PROBLEM :
I create a Scrollbar object by
Scrollbar sb = new Scrollbar(Scrollbar.HORIZONTAL, 0, 5, 0, 255);
But the actual maximum value is not 255, but 250!

The following are the program.
/*
 File name: ScrollbarEventsBR.java
 *Function overview:A class to demonstrate what I think bug on Scrollbar class.
 *auther: T.H
 *since: 06/06/12
 *version: 1.0
 */

import java.applet.Applet;
import java.awt.Scrollbar;
import java.awt.TextArea;
import java.awt.event.AdjustmentListener;
import java.awt.event.AdjustmentEvent;
/*
    <applet code="ScrollbarEventsBR" width=400 height=200>
    </applet>
*/
public class ScrollbarEventsBR extends Applet implements AdjustmentListener{
    TextArea ta;
    Scrollbar sb;

    public void init(){
        sb = new Scrollbar(Scrollbar.HORIZONTAL, 0, 5, 0, 255);
        sb.addAdjustmentListener(this);
        add(sb);
        ta = new TextArea(10, 20);
        add(ta);
    }

    public void adjustmentValueChanged(AdjustmentEvent ae){
        ta.append("Value: " + sb.getValue() + "\n");
    }
}


REPRODUCIBILITY :
This bug can be reproduced always.

CUSTOMER SUBMITTED WORKAROUND :
Actual maxmum value of a Scrollbar object seems to be "maximum - visible" on the constructor of
Scrollbar(int orientation, int value, int visible, int minimum, int maxmum).