Thread: [jnc-users] JNC version 1.1.1 only works with version 1.1 backend

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Dear Marco,

being a newbie, I first wanted to make sure that I can produce
executable binaries before I waste too much time learning Java,
so I spent half a week playing with your JavaNativeCompiler
version 1.1.1, together with GCC version 122233, as linked on your
download page. I use Windows 7 and Debian 7.3 (64 bit both).

1. There were no problems compiling a "Hello World" program that
writes directly to the console using the "System.out.println"
command; the created binary worked as expected.

2. This was not the case, however, with a "Hello World" program
using AWT:
http://www.xinotes.org/notes/note/1105/
Here I ran into a problem similar to that one "Cyber Legionnaire"
described on September 24th, 2006:
> I've compiled some source files using JavaCompiler. The .EXE is  
> created but when I try to run it, I briefly  see a blank console  
> window and the program terminates. No error message, no nothing.
http://sourceforge.net/mailarchive/forum.php?thread_name=45178178.4090807%40gmx.ch&forum_name=javacompiler-users
In my case, I just saw the "Demo" message box, and the Windows
task manager listed a running 40 MB process, but no "Hello World"
window was visible.

3. The same thing happened when I compiled the AWT text editor
example. I thought I must have made a silly mistake concerning
the installation folders or the JNC settings, but then I noticed
that the archive already contained pre-compiled binaries - and
these ones failed in the same way, on both Windows and Linux!

4. As you recommend using SWT stating that it is fully supported
while AWT and Swing support is still experimental, I tried to
compile a "Hello World" program using SWT:
http://www.mkyong.com/swt/swt-hello-world-example/
Here I inevitably got "import cannot be resolved" error messages.
So in the FAQ a hint for the newbies on how to use SWT with JNC
would be helpful.

5. Then I finally had luck running the binary that comes with
the 1.1 version of the AWT text editor example. I noticed that
the process now was only 30 MB large in the task manager listing,
though the source file was the same as in the 1.1.1 version. So
I supposed that this might be caused by the involved GCC, which
is version 121694 here. And when I simply downloaded that older
version of GCC and used it with JNC 1.1.1, (nearly) everything was
just fine: I suddenly could compile the AWT "Hello World" program
and the AWT text editor, and both showed up as desired! (Okay, the
letters were missing in "Hello World"... but what a success!)

I got the impression that you made a severe mistake in "bundling" a
somewhat buggy GCC with your latest version of JNC, over the years
possibly disappointing lots of prospect customers who made the same
experience as I did. By the way, I do not hear a "beep when done",
and I do not understand the line "Checkbox: Compile compete jar"
on the "Step 1" page since there is no checkbox. So what about
a version 1.1.2 bugfix to state that JNC is still alive? And will
you continue working on JNC when there is some progress with GJC?
On my side, I think I will continue "playing" with JNC. I like it.

Regards,

Gerolf