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Re: sun-jdk15 and wireless toolkit v2.2



On 6/20/07, stefanos mparas <stefano%arx.net@localhost> wrote:
hello ,

i've installed sun's jdk/jre with linux emulation fro pkgsrc (
pkgsrc/lang/sun-sdk15 & sun-jre15 )
did all the things i think i had to do to make it work
like mount emul linux procfs , set env variables ( JAVA_HOME , CLASSPATH
) etc ,

so far java (with linux emulation) works fine ,

the problem started when i installed the j2me toolkit ,
(it is used to create java applications for mobile phones and some
embedded boards)
exact name : j2me_wireless_toolkit-2_2-linux-i386.bin  ( it's linux and
it will run with emulation as jdk)

everything went ok with installation and running , i could run
precompiled example applications ,
but ,
couldn't compile new ones ,
after a while a traced it down to , toolkit not being able to load and
use the  "javac" class

decompiled code from sun's toolkit

               try
                {
                        class1 =
toolLoader.loadClass("com.sun.tools.javac.Main");
                        method = class1.getMethod("compile", new Class[] {
                                java.lang.String[].class
                        });
                }

this error is easy reproduced if unset the CLASSPATH env  variable
and compile any java program that makes use of loadClass(".....javac.....")


i found out that the script to fire up the toolkit ( ktoolbar  )
actually uses :

javac -cp {location libraries of toolkit} other_options other_options

this way it overrides totally (i think) the CLASSPATH env which points
to the correct tools
and here is the problem ,
if i add javac -cp location_libraries_sdk15:location_libraries_wtk it
works ok ,

since i've recently switched from debian to netbsd at the computer where
i work ,
i digged a little at my back up tapes from linux , and didn't observed
anything
that could reproduce this problem on linux

a friend of mine (with more java background than me and mostly a freebsd
guy )
pointed out that this might be happening due to not having a "native"
installation of java

so ,
a) has anyone any thoughts on this ? could this be happening due to non
native java ( sun-jdk instead of scsl-source-jdk )

b) could someone reproduce this with a native java installation ?

(from what i have tried on my system it's enough  to just visit
http://www.javaworld.com/javatips/jw-javatip131.html?page=2
download the simple example ,
and compile with out specifying "-cp" at the command line.

if we find a good solution ,
we can fix wip/sun-j2me package which has set PKG_FAIL_REASON
for quite a while now i think ,

thanks in advance

stefano _a_t_ arx.gr/net

So you have two versions of java installed?  If so, just remove the
one that doesn't work.

If not, a lot of java programs startup with the -cp command line
getting defined in a config file (something.properties) file, or from
a shell script (startup.sh, etc).

As far as fixing the native jvm, that's a little beyond me.  Sorry.  :)



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