Re: Making System.in interruptible, how?
On 3/10/2012 1:30 PM, Jan Burse wrote:
Arne Vajh?j schrieb:
I have finally adopted the ready() solution. I guess that
if the input stream is redirected to a file, the ready()
will mostly return true, so that performance is no issue.
File is not the problem.
The problem is that it dos not seem to be guaranteed to
work.
Yep, doesn't work on Windows 7 / JDK 1.7. Somehow
inside cmd.exe the ready does not echo. So I enter
a line, done see anything during editing the line,
and then when I hit return the line gets read.
On Mac OS / JDK 1.7 in the standard terminal
and in xterm it works fine. During a ready call,
everything I type is echoed, a line can fully be
edited, and then when hitting return the line
gets read.
My advice is still: either do it true cross platform
in pure Java and stay away from anything that is not
clearly documented to work, or use JNI to call some
platform specific C code that does exactly what you want.
In the first case, then it just works everywhere. The
cost is that the UI may be a bit "dumb".
In the second case it is very well defined what has to
be done to get the code working on a new platform.
Using not well defined behavior will eventually create
very painfully experiences when it stop working due
to: new platform, OS upgrade, Java upgrade etc..
Arne