Hey again Hez, I think you're right -- it turns out that gwtrpc-spring-1.0.jar (if you downloaded it from the gwtrpc-spring project [0]), is compiled for Java 1.6.
[0] http://code.google.com/p/gwtrpc-spring/ Thankfully, it's open-source, so you can probably grab their code and compile it for 1.5, or possibly poke the gwtrpc-spring developers and get them to make a 1.5-compatible build. If you take out your dependence on gwtrpc-spring and remove that jar from your classpath, does it prevent that error? Thanks! On Tue, May 19, 2009 at 2:52 AM, hezjing <hezj...@gmail.com> wrote: > Hi > > In my current Eclipse, Window->Preferences->Java->Compiler, Compiler > compliance level is 1.5. > > The problem still exist even after I have uninstall JRE 1.6, restarted > Eclipse, cleaned and launched the project again. > > I'm just guessing wild here, do you think the libraries below could cause > the problem? >> antlr-2.7.6.jar >> appengine-api-1.0-sdk-1.2.0.jar >> commons-logging.jar >> datanucleus-appengine-1.0.0.final.jar >> datanucleus-core-1.1.0.jar >> datanucleus-jpa-1.1.0.jar >> geronimo-jpa_3.0_spec-1.1.1.jar >> geronimo-jta_1.1_spec-1.1.1.jar >> gwt-servlet.jar >> gwtrpc-spring-1.0.jar >> jdo2-api-2.3-SNAPSHOT.jar >> spring-aop.jar >> spring-beans.jar >> spring-context.jar >> spring-core.jar >> spring-web.jar > -- Alex Rudnick swe, gwt, atl --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group. To post to this group, send email to Google-Web-Toolkit@googlegroups.com To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/Google-Web-Toolkit?hl=en -~----------~----~----~----~------~----~------~--~---
