Linux: New-line character can not be displayed in TextArea

On Redhat Linux 6.1J with build 1.2.2-RC2-K

TextArea seems to recognize new-line character,
but can not display it correctly and display it as a another printable word.
However, there is no problem in printing to paper or file about new-line charactcter.

To reproduce,

1. Compile and run an attached program(ta.java)
2. An TextArea appears and stroke Enter key in it.