Re: Javac settings

Hi Jano,

see my comments below.

Jan Rojcek wrote:
> Hi Svata,
> 
> thank you for your feedback. Inline...
> 
> Svata Dedic wrote:
> 
>> 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".
>>
> 
> I found it but not in JDK1.4.1. Was it removed? It isn't documented in 
> manual pages of javac, either.
> 
>> Missing options:
>> -encoding
>> See "javac -?" output + documentation for more details.
>>
> 
> I would leave the encoding option for the additional options text field. 
> Do you find it an important option?
> 
>> -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.
>>
> 
> Fine, this should be exposed 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
>>
> 
> I think usage of no debugging info is rare. OTOH, the name "Generate All 
> Debugging Info" doesn't say what info is generated when unchecked. So 
> probably a checkbox "Generate Debugging Info:" with combobox containing 
> two choices: "Sources, Lines, Vars", "Sources, Lines" would be better.
> 
>> 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".
>>
> 
> I am for keeping the specific checkbox for 1.4, and renaming it.
> 
>> 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.
>>
> 
> I hope this can be left for the free-options area.
> 
> So, the javac customizer would look like this:
> 
> +---------------------------------------------------------+
> |                                                         |
> | [ ] Enable Asserts           +--------------------+---+ |
> | [x] Generate Debugging Info: |Sources, Lines, Vars| v | |
> | [x] Report Warnings          +--------------------+---+ |
> | [ ] Report Deprecations                                 |
> |                                                         |
> |                              +------------------+       |
> |  Maximum Heap Size (MBytes): |                  |       |
> |                              +------------------+       |
> |                                                         |
> |  Additional Javac Options:                              |
> |  +----------------------------------------------------+ |
> |  |                                                    | |
> |  +----------------------------------------------------+ |
> +---------------------------------------------------------+
> 
> Would that work?
> 
> Thank you,
> Jano
> 

1.) What about to use checkboxes for the debugging info like

Generate Debugging Info: [x]Sources [x]Lines []Vars

2.) This customizer is suitable just for the platform 1.4 and maybe 
above. Older platforms do not support assertions (-source option). Are 
you going to provide different customizers for older platforms?

3.) You have not answered yet my previous mail where I asked how to 
handle output folder. Is it possible to customize compiled classes' 
output folder just via Additional Javac Options (-d option)?

4.) How to solve conflicts between Additional Javac Options and ui 
components?

Thanks,

Jan