Exception with class org.codehaus.jackson, new Properties()) and Neo4j JDBC

Hi All,
I’m stuck with my Vaadin6 project and Neo4J connection
Im’ trying to connect on Neoj4 DB thru Neo4j JDBC driver with this simple method just to check if it works:
try {
Neo4jConnection connect = new Driver().connect(“jdbc:neo4j://localhost:7474”, new Properties());
} catch (Exception e) {
// TODO Bloc catch généré automatiquement
e.printStackTrace();
}
Everything sounds good with import package :
import java.util.Properties;
import org.neo4j.jdbc.Driver;
import org.neo4j.jdbc.Neo4jConnection;

But when i launch the application even i’ve added jackson-core-asl-1.8.5.jar and jackson-mapper-asl-1.8.5.jar in lib directory :

javax.servlet.ServletException: java.lang.NoSuchMethodError: org.codehaus.jackson.type.JavaType.(Ljava/lang/Class;)V com.vaadin.terminal.gwt.server.AbstractApplicationServlet.handleServiceException(AbstractApplicationServlet.java:1010) com.vaadin.terminal.gwt.server.AbstractApplicationServlet.service(AbstractApplicationServlet.java:548) javax.servlet.http.HttpServlet.service(HttpServlet.java:728) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
And if i click again
javax.servlet.ServletException: java.lang.NoClassDefFoundError: Could not initialize class org.codehaus.jackson.map.ObjectMapper com.vaadin.terminal.gwt.server.AbstractApplicationServlet.handleServiceException(AbstractApplicationServlet.java:1010) com.vaadin.terminal.gwt.server.AbstractApplicationServlet.service(AbstractApplicationServlet.java:548) javax.servlet.http.HttpServlet.service(HttpServlet.java:728) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

i don’t know if it’s classpath pb or jar version or something else !
Could you help me ?
Cheers