Re: [Gumstix-users] [gumstix newbie question] jikes + app containing swing components and jpcapcaptor

[R F <fr...@gm...>]

problem solved! The reason why my graphical helloWorld was not working is
that I was typing 'jamvm Hello.class' instead of simply 'jamvm Hello'.

I am still having trouble getting jamvm to find the jpcap libararies
though. This application was compiled using Netbeans 7.1 and the dist
folder contains the jar file and a folder containing jpcap.jar and
swingLayout.jar.

I am getting this error:
root@overo:jamvm -jar GUIFormExamples.jar
Exception during event dispatch:
java.lang.UnsatisfiedLinkError: Native libarary 'jpcap' not found (as file
'libjpcap.so') in gnu.classpath.boot.library.path and java.library.path
.
.
.

Where should I put the jpcap.jar file in order to make java find these
files? I am sorry it's a very basic question but I don't know the answer to
this.



On Wed, Mar 14, 2012 at 9:09 AM, R F <fr...@gm...> wrote:

> Just in case it helps in diagnosing the problem, here's the output from
> jikes when I try to compile the graphical HelloWorld application:
>
> root@overo:/# export
> BOOTCLASSPATH=/usr/share/jamvm/classes.zip:/usr/share/class
> path/glibj.zip
> root@overo:/# echo $BOOTCLASSPATH
> /usr/share/jamvm/classes.zip:/usr/share/classpath/glibj.zip
> root@overo:/# export DISPLAY=:0.0
> root@overo:/# jikes graphicHello.java
> Found 3 semantic errors compiling "graphicHello.java":
>      7.          final JLabel label = new JLabel("hello from Gumstix");
>                        ^----^
> *** Semantic Error: Type "JLabel" was not found.
>
>      7.          final JLabel label = new JLabel("hello from Gumstix");
>                                           ^----^
> *** Semantic Error: Type "JLabel" was not found.
>
>      8.          frame.getContentPane().add(label);
>                  ^-------------------------------^
> *** Semantic Error: Ambiguous invocation of method "add". At least two
> methods a
> re accessible from here: "void add(java.awt.PopupMenu $1);" declared in
> type "ja
> va.awt.Component" and "java.awt.Component add(java.awt.Component $1);"
> declared
> in type "java.awt.Container".
>
> On Wed, Mar 14, 2012 at 12:08 AM, R F <fr...@gm...> wrote:
>
>> Hi Everyone
>>
>> I am trying to compile a java application on my gumstix overo. I've been
>> following this guide (
>> http://wiki.gumstix.org/index.php?title=Onboard_Java_Compiler) and have
>> had help from this forum. Here's the current state of affairs: I have
>> installed jamvm (as part of which classpath-common and classpath-nominal
>> were also installed), jikes and classpath-gkt. The installation
>> classpath-dev failed because it tried to install libgcc which was already
>> present. I've compiled a helloWorld app and it seems to run fine with
>> jamvm. My linux version is 2.6.34 (Oct 2010).
>>
>> Now I need to run another application which contains Java swing
>> components as well as packet capture functionality (using JpcapCaptor).
>> I've checked that this application compiles on a windows pc using
>> NetBeans + jdk1.5. However, the compilation failes on gumstix and jikes
>> spits out a large number of errors. I wasn't sure about the cause so I then
>> tried to compile a simple graphical HelloWorld application (
>> http://wiki.gumstix.org/index.php?title=Using_Eclipse_to_Write_HelloWorld_in_Java_for_the_Overo)
>> which also uses Swing components. This application didn't compile either.
>> Does that mean Jikes doesn't support swing (and perhaps awt)?  Or is it all
>> due to the problems I had with classpath-dev?
>>
>> Any help/suggestions/pointers would be really appreciated.
>>
>>
>
>