1.1.only Solaris home/end/pgup/pgdown keys don't work in TextArea or TextField

In jdk1.1.8, build H

  I find some key cann't work in TextArea & TextField.
  List bellow:
   "Home" : move to line head.
   "End" : move to line end.
   "Page Up": move to previous text page. (for TextArea)
   "Page down": move to next text page. (for TextArea)

And I test other version , jdk1.1.6,jdk1.2, jdk1.2.2. They all work well

reproduce that:
 save the attached file to local.

 + compile testText.java.
 + run testText.class
 + In TextField and Textarea, Using the four key. they cann't work