Compile java files in packages

[jovansonlee cesar]

Hello Vaijayanthi Mala Suresh,

> Can you please let me know i can generate .class files as I have
> native methods defined in many of these java files for which
> I need to generate the .h files as well.

I have not tried generating .h files for these, and I havent even
tried linking java together with c++,
My main objective is really just to compile prebuilt java applications
into native binary using gcj.

In generating ".class" files, you could use "gcj -C" in the same way
you use "javac" from sun's jdk,
"gij" in the same way you could use "java" from sun jdk,

Here is an example:
       $gcj -C Hello.java
that would generate Hello.class
in the same you do as(in suns jdk)
       $javac Hello.java

To run, just use
      $gij Hello
in the same(suns jdk)
     $java Hello


Regards,
ivanceras


On Fri, Jun 5, 2009 at 6:39 PM, Vaijayanthi Mala
Suresh<vaijayanthimalas@gmail.com> wrote:
> Hi ivanceras,
>
> Thanks for your help.
>
> Can you please let me know i can generate .class files as I have
> native methods defined in many of these java files for which
> I need to generate the .h files as well.
>
> Thanks
> Mala
>
> On Fri, Jun 5, 2009 at 2:26 PM, jovansonlee cesar<ivanceras@gmail.com> wrote:
>> Hi Vaijayanthi Mala Suresh,
>>
>> Here is my little example:
>> http://ivanceras.blogspot.com/2009/04/gcj-vs-jvm-benchmark.html
>>
>>    $gcj -c -g -O Test.java
>>    $gcj --main=Test -o Test.bin Test.o
>>    $./Test.bin
>>
>> and here's how you would compile jar library file(ie. postgresql jdbc
>> driver) and link it to your main class
>> http://ivanceras.blogspot.com/2009/05/gcc-vs-jvm-benchmark-2.html
>>
>>  Compiling, Linking and Running in GCJ:
>>
>>  compile the PostgreSQL jdbc driver
>>   $gcj -c -g -O postgresql-8.4dev-700.jdbc3.jar
>>   This will create the native binary file "postgresql-8.4dev-700.jdbc3.o"
>>
>>  compile the Test
>>   $gcj -c -g -O TestDb.java
>>  This will create the native binay file "TestDb.o"
>>
>>   do the linking
>>  $gcj --main=TestDb -o TestDb.bin postgresql-8.4dev-700.jdbc3.o TestDb.o
>>  This will create the executable file: "TestDb.bin"
>>
>>  execute
>>  $./TestDb.bin
>>
>> Please visit the blog for more details :)
>>
>> Regards,
>> ivanceras
>>
>> (PS: have to resend, mailist don't seem to accept html text)
>>
>> On Fri, Jun 5, 2009 at 3:39 PM, Vaijayanthi Mala Suresh
>> <vaijayanthimalas@gmail.com> wrote:
>>>
>>> Hi,
>>>
>>> I have a several packages of java files which I need to compile with
>>> gcj to generate .class and .o files.
>>>
>>> Can anyone help me please.
>>>
>>> Thanks
>>> Mala
>>
>