Re: Javac settings

Jan Rojcek wrote:
> Hello team,
> 
> I am proposing the following javac customizer pane for use in Figures 2, 
> 49 and 53 (in the space for rent) of java project spec. The components 
> are in default state:
> 
> +------------------------------------------------- +
> | [ ] Enable JDK 1.4 Sources                       |
> | [x] Generate All Debugging Info                  |
> | [ ] Report No Warnings                           |
> | [ ] Report Usage of Deprecated Members           |
> |                                                  |
> |  Additional javac Options:                       |
> |  +--------------------------------------------+  |
> |  |                                            |  |
> |  +--------------------------------------------+  |
> +--------------------------------------------------+
> 

[snip]
> Note:
> "Optimize" is an option shown in the current (NB3.5) external compiler options. I haven't found such option listed between javac options. Was this option used with different external compilers?

Try "javac -?". The option for optimize is "-O".

Missing options:
-encoding
See "javac -?" output + documentation for more details.

-J-Xmx for the javac's virtual machine: if large project is compiled, 
the compiler may run out of memory with the standard heap size. This 
option is adopted by other IDEs in the GUI.

Possibly missing:
- way to generate NO debugging info at all (if you do not pass -g:none, 
the javac will assume -g:lines,source). Having to type such obscure 
syntax into the free-text area is clumsy, IMHO

Possibly overstrict:
"Enable JDK 1.4 Sources" -- this one appeared first time with JDK-1.4, 
but according to what is already known about the projected JDK-1.5, the 
language will change again. At that time, the checkbox should be 
replaced by a drop-down chooser of language flavours.
If the checkbox should remain there, then maybe we could make the name 
more "user-friendly": the only real thing it controls is whether the 
compiler accepts "assert" as keyword (defined in JDK 1.4). So maybe 
"Enable asserts".

Note: while "target platform" specifies tools, and libraries, "-target" 
switch specifically affects the version number of generated .class 
files, inner class translation etc. I am almost sure that the "target" 
option would be always set to the value of the selected target platform, 
but I would be glad if someone verifies the assumption.

-Svata