Problem debugging starting debug function in eclipse using Java

[erikrafael at cefetam.edu.br]

Hi,

I am writing to this group because I have a problem using eclipse on Linux
(version 2.6.18-5-amd64 #1 SMP x86_64). I installed the j2sdk1.5-sun and
latter the eclipse using the aptitude install eclipse. Java alternatives
installed in my machine:
root at toronto:/usr/lib/java# update-alternatives --config java
  Seleção      Alternativa
-----------------------------------------------
          1    /usr/bin/gij-wrapper-4.1
*         2    /usr/lib/j2sdk1.5-sun/bin/java
 +        3    /usr/lib/jvm/java-gcj/jre/bin/java

Everything was going fine until I realized that the debug functionality
does not work, I mean it's not possible go step by step through the code.

I have searched the web looking for some tip regarding how to solve this
issue but unfortunately I couldn't find. It was a surprise to realize that
this functionality (debugging) is not working fine after the installation
had finished.

Can you help me or give me any directions concerning how to solve this issue?

Hope you can help me.
Regards, Erik Rafael

P.S:. Information regarding the eclipse package installed in Debian
Distribution 4.0r1 AMD64
root at toronto:/usr/lib/java# aptitude show eclipse
Pacote: eclipse
Estado: instalado
Automaticamente instalado: não
Versão: 3.2.1-4
Prioridade: opcional
Seção: devel
Mantenedor: Debian Java Maintainers
<pkg-java-maintainers at lists.alioth.debian.org>
Tamanho Descompactado: 426k
Depende de: eclipse-jdt (= 3.2.1-4), eclipse-pde (= 3.2.1-4), eclipse-source
            (= 3.2.1-4), zenity
Recomenda: eclipse-gcj
Conflita com: eclipse-sdk (<= 3.1.1-5), eclipse-platform-common (< 3.1.2-1)
Substitui: eclipse-sdk (<= 3.1.1-5), eclipse-platform-common (< 3.1.2-1),
           eclipse-platform (< 3.1.2-2)
Descrição: Extensible Tool Platform and Java IDE
 The Eclipse Platform is an open and extensible platform for anything and
yet nothing in particular. It provides a foundation for constructing and
running integrated software-development tools. The Eclipse Platform
allows tool
 builders to independently develop tools that integrate with other people's
 tools so seamlessly you can't tell where one tool ends and another starts.

 Package to provide the whole Eclipse SDK, which includes the Java
 Development Tools and Plug-in Development Tools.

Tags: devel::ide, devel::lang:java, interface::x11, role::program,
      suite::eclipse, works-with::software:source, x11::application