Application: gvSIG desktop

I 'm starting development on the environment gvSIG , I tried to follow the " Developers Quick Start Guide ."

Following the steps obtained the source code of the template but not the eclipse project . Looking at the log can be read

[ Artifact : mvn ] [ INFO] ------------------------------------------ ------------------------------
[ Artifact : mvn ] [ ERROR ] BUILD FAILURE
[ Artifact : mvn ] [ INFO] ------------------------------------------ ------------------------------
[ Artifact : mvn ] [ INFO] Compilation failure
[ Artifact : mvn ] Unable to locate the javac Compiler in:
[ Artifact : mvn ] C: \ Program Files \ gvSIG desktop 2.0.0 \ gvSIG \ extensiones \ jre_6_windows_i586 \ jre \ .. \ lib \ tools.jar
[ Artifact : mvn ] Please Ensure you are using JDK 1.4 or Above and
[ Artifact : mvn ] not a JRE (the com.sun.tools.javac.Main class is required ) .
[ Artifact : mvn ] In wort houses you can change the location of your Java
[ Artifact : mvn ] installation by setting the JAVA_HOME environment variable .
[ Artifact : mvn ]
[ Artifact : mvn ] [ INFO] ------------------------------------------ ------------------------------

It seems logical that it can not compile that "tools.jar" is in " jdk_6_windows_i586 " not in " jre_6_windows_i586 ."

You can tell me anything about how to fix the problem.