When a program create more tabs than the frame can show, scroll bar must be active so that
user can do something to the newly cretaed and hidden tabs, but actually, the scroll bar
does not become active.
OS : WindowsXP(SP3, Japanese, 32bits)
(1) Compile the attached test cases(TabTesrFrame.java, TabAddListener.java)
(2) Invoke "java TabTestFrame"
(3) Click "Add Tab" button twice in order to show "Added Tab2" and "Added Tab3.
"Added Tab3" is hidden partially.
(4) Click "Added Tab2" and then click "Added Tab3".
"Added Tab3" fully appears.
(5) Click "Add Tab" button.
At the above step (5), scroll bar for right direction becomes active.
The scroll bar for right direction does not become active.
This problme always occurs.