Hi Lewis, The OP is not able to build nutch in Eclipse. So far people have been suspecting over this part of the log:
**C:\Users\Danilo\workspace\Nutch\build.xml:96: java.lang.UnsupportedClassVersionError: com/sun/tools/javac/Main : Unsupported major.minor version 51.0***** * It turns out that the java version is fine. (v 1.6). I am not sure but this problem might be related to ivy as per this error: *> > [*ivy:resolve*] unknown resolver main***** *> > [*ivy:resolve*] :: USE VERBOSE OR DEBUG MESSAGE LEVEL FOR MORE > > DETAILS**** * I had faced this error before but it was sporadic and used to go away after invoking ant again. OP faces it consistently. @Danilo: Maybe turning on verbose level for ivy might shed some light. Thanks, Tejas Patil On Tue, Feb 26, 2013 at 10:32 AM, Lewis John Mcgibbney < [email protected]> wrote: > What is the problem? There is a community here that can help... if we know > what is wrong! > > On Tue, Feb 26, 2013 at 7:44 AM, Danilo Fernandes < > [email protected]> wrote: > > > I tried both and no one function! :( > > > > -----Mensagem original----- > > De: kiran chitturi [mailto:[email protected]] > > Enviada em: terça-feira, 26 de fevereiro de 2013 12:32 > > Para: [email protected] > > Cc: [email protected] > > Assunto: Re: Eclipse Error > > > > Let's keep the discussion in the User mailing list. > > > > I would suggest you to follow the instructions here to set up Nutch in > > Eclipse [1] > > > > JDK 1.6 + or 1.7 + will be good enough. I would also suggest to keep your > > JRE compatible with the JDK. > > > > [1] - http://wiki.apache.org/nutch/RunNutchInEclipse > > > > > > > > > > On Tue, Feb 26, 2013 at 10:05 AM, Danilo Fernandes > > <[email protected]>wrote: > > > > > Kiran,**** > > > > > > Do you think I need a JDK 7?**** > > > > > > ** ** > > > > > > *De:* kiran chitturi [mailto:[email protected]] > > > *Enviada em:* terça-feira, 26 de fevereiro de 2013 11:57 > > > > > > *Para:* [email protected] > > > *Assunto:* Re: Eclipse Error**** > > > > > > ** ** > > > > > > I think Nutch requires atleast Java 1.6.**** > > > > > > ** ** > > > > > > On Tue, Feb 26, 2013 at 5:33 AM, Danilo Fernandes <[email protected]> > > > wrote:**** > > > > > > What version of JDK fit with Nutch trunk? > > > > > > Anybody knows?**** > > > > > > ** ** > > > > > > 2013/2/25 Danilo Fernandes <[email protected]>**** > > > > > > Feng Lu, thanks for the fast reply.**** > > > > > > **** > > > > > > But, I’m using the JavaSE-1.6 (jre6) and always get this error.**** > > > > > > **** > > > > > > *De:* feng lu [mailto:[email protected]] *Enviada em:* > > > segunda-feira, 25 de fevereiro de 2013 22:35 > > > *Para:* [email protected] > > > *Assunto:* Re: Eclipse Error**** > > > > > > **** > > > > > > Hi Danilo**** > > > > > > **** > > > > > > "Unsupported maj.minor version 51.0" means that you compiled your > > > classes under a specific JDK, but then try to run them under older > > version > > of JDK. > > > So, you can't run classes compiled with JDK 6.0 under JDK 5.0. The > > > same with classes compiled under JDK 7.0 when you try to run them under > > JDK 6.0. > > > **** > > > > > > **** > > > > > > On Tue, Feb 26, 2013 at 9:12 AM, Danilo Fernandes <[email protected]> > > > wrote:**** > > > > > > *Hi, I want do some changes in Nutch to get a HTML and take some data > > > from them. > > > > > > My problem starts when I’m compiling the code in Eclipse. > > > > > > I always receive the follow error message.* > > > > > > Buildfile: *C:\Users\Danilo\workspace\Nutch\build.xml***** > > > > > > [*taskdef*] Could not load definitions from resource > > > org/sonar/ant/antlib.xml. It could not be found.**** > > > > > > *ivy-probe-antlib*:**** > > > > > > *ivy-download*:**** > > > > > > [*taskdef*] Could not load definitions from resource > > > org/sonar/ant/antlib.xml. It could not be found.**** > > > > > > *ivy-download-unchecked*:**** > > > > > > *ivy-init-antlib*:**** > > > > > > *ivy-init*:**** > > > > > > *init*:**** > > > > > > [*mkdir*] Created dir: C:\Users\Danilo\workspace\Nutch\build**** > > > > > > [*mkdir*] Created dir: > > > C:\Users\Danilo\workspace\Nutch\build\classes** > > > ** > > > > > > [*mkdir*] Created dir: > > > C:\Users\Danilo\workspace\Nutch\build\release** > > > ** > > > > > > [*mkdir*] Created dir: > > > C:\Users\Danilo\workspace\Nutch\build\test**** > > > > > > [*mkdir*] Created dir: > > > C:\Users\Danilo\workspace\Nutch\build\test\classes**** > > > > > > [*copy*] Copying 8 files to > > > C:\Users\Danilo\workspace\Nutch\conf**** > > > > > > [*copy*] Copying > > > C:\Users\Danilo\workspace\Nutch\conf\automaton-urlfilter.txt.template > > > to > > > C:\Users\Danilo\workspace\Nutch\conf\automaton-urlfilter.txt**** > > > > > > [*copy*] Copying > > > C:\Users\Danilo\workspace\Nutch\conf\httpclient-auth.xml.template to > > > C:\Users\Danilo\workspace\Nutch\conf\httpclient-auth.xml**** > > > > > > [*copy*] Copying > > > C:\Users\Danilo\workspace\Nutch\conf\nutch-site.xml.template to > > > C:\Users\Danilo\workspace\Nutch\conf\nutch-site.xml**** > > > > > > [*copy*] Copying > > > C:\Users\Danilo\workspace\Nutch\conf\prefix-urlfilter.txt.template to > > > C:\Users\Danilo\workspace\Nutch\conf\prefix-urlfilter.txt**** > > > > > > [*copy*] Copying > > > C:\Users\Danilo\workspace\Nutch\conf\regex-normalize.xml.template to > > > C:\Users\Danilo\workspace\Nutch\conf\regex-normalize.xml**** > > > > > > [*copy*] Copying > > > C:\Users\Danilo\workspace\Nutch\conf\regex-urlfilter.txt.template to > > > C:\Users\Danilo\workspace\Nutch\conf\regex-urlfilter.txt**** > > > > > > [*copy*] Copying > > > C:\Users\Danilo\workspace\Nutch\conf\subcollections.xml.template to > > > C:\Users\Danilo\workspace\Nutch\conf\subcollections.xml**** > > > > > > [*copy*] Copying > > > C:\Users\Danilo\workspace\Nutch\conf\suffix-urlfilter.txt.template to > > > C:\Users\Danilo\workspace\Nutch\conf\suffix-urlfilter.txt**** > > > > > > *clean-lib*:**** > > > > > > *resolve-default*:**** > > > > > > [*ivy:resolve*] :: Ivy 2.2.0 - 20100923230623 :: > > > http://ant.apache.org/ivy/ ::**** > > > > > > [*ivy:resolve*] :: loading settings :: file = > > > C:\Users\Danilo\workspace\Nutch\ivy\ivysettings.xml**** > > > > > > [*ivy:resolve*] :: problems summary ::**** > > > > > > [*ivy:resolve*] :::: ERRORS**** > > > > > > [*ivy:resolve*] unknown resolver main**** > > > > > > [*ivy:resolve*] unknown resolver main**** > > > > > > [*ivy:resolve*] unknown resolver main**** > > > > > > [*ivy:resolve*] unknown resolver main**** > > > > > > [*ivy:resolve*] unknown resolver main**** > > > > > > [*ivy:resolve*] unknown resolver main**** > > > > > > [*ivy:resolve*] unknown resolver main**** > > > > > > [*ivy:resolve*] unknown resolver main**** > > > > > > [*ivy:resolve*] unknown resolver main**** > > > > > > [*ivy:resolve*] unknown resolver main**** > > > > > > [*ivy:resolve*] unknown resolver main**** > > > > > > [*ivy:resolve*] unknown resolver main**** > > > > > > [*ivy:resolve*] unknown resolver main**** > > > > > > [*ivy:resolve*] unknown resolver main**** > > > > > > [*ivy:resolve*] unknown resolver main**** > > > > > > [*ivy:resolve*] unknown resolver main**** > > > > > > [*ivy:resolve*] unknown resolver main**** > > > > > > [*ivy:resolve*] unknown resolver main**** > > > > > > [*ivy:resolve*] unknown resolver main**** > > > > > > [*ivy:resolve*] unknown resolver main**** > > > > > > [*ivy:resolve*] unknown resolver main**** > > > > > > [*ivy:resolve*] unknown resolver main**** > > > > > > [*ivy:resolve*] unknown resolver main**** > > > > > > [*ivy:resolve*] unknown resolver main**** > > > > > > [*ivy:resolve*] unknown resolver main**** > > > > > > [*ivy:resolve*] unknown resolver main**** > > > > > > [*ivy:resolve*] unknown resolver main**** > > > > > > [*ivy:resolve*] unknown resolver main**** > > > > > > [*ivy:resolve*] unknown resolver main**** > > > > > > [*ivy:resolve*] unknown resolver main**** > > > > > > [*ivy:resolve*] unknown resolver main**** > > > > > > [*ivy:resolve*] unknown resolver main**** > > > > > > [*ivy:resolve*] unknown resolver main**** > > > > > > [*ivy:resolve*] unknown resolver main**** > > > > > > [*ivy:resolve*] unknown resolver main**** > > > > > > [*ivy:resolve*] unknown resolver main**** > > > > > > [*ivy:resolve*] unknown resolver main**** > > > > > > [*ivy:resolve*] unknown resolver main**** > > > > > > [*ivy:resolve*] unknown resolver main**** > > > > > > [*ivy:resolve*] unknown resolver main**** > > > > > > [*ivy:resolve*] unknown resolver main**** > > > > > > [*ivy:resolve*] unknown resolver main**** > > > > > > [*ivy:resolve*] unknown resolver main**** > > > > > > [*ivy:resolve*] unknown resolver main**** > > > > > > [*ivy:resolve*] unknown resolver main**** > > > > > > [*ivy:resolve*] unknown resolver main**** > > > > > > [*ivy:resolve*] unknown resolver main**** > > > > > > [*ivy:resolve*] unknown resolver main**** > > > > > > [*ivy:resolve*] unknown resolver main**** > > > > > > [*ivy:resolve*] unknown resolver main**** > > > > > > [*ivy:resolve*] unknown resolver main**** > > > > > > [*ivy:resolve*] unknown resolver main**** > > > > > > [*ivy:resolve*] unknown resolver main**** > > > > > > [*ivy:resolve*] unknown resolver main**** > > > > > > [*ivy:resolve*] unknown resolver main**** > > > > > > [*ivy:resolve*] unknown resolver main**** > > > > > > [ivy:resolve] **** > > > > > > [*ivy:resolve*] :: USE VERBOSE OR DEBUG MESSAGE LEVEL FOR MORE > > > DETAILS**** > > > > > > [*taskdef*] Could not load definitions from resource > > > org/sonar/ant/antlib.xml. It could not be found.**** > > > > > > *copy-libs*:**** > > > > > > *compile-core*:**** > > > > > > [*javac*] C:\Users\Danilo\workspace\Nutch\build.xml:96: warning: > > > 'includeantruntime' was not set, defaulting to > > > build.sysclasspath=last; set to false for repeatable builds**** > > > > > > **** > > > > > > BUILD FAILED**** > > > > > > *C:\Users\Danilo\workspace\Nutch\build.xml:96: > > > java.lang.UnsupportedClassVersionError: com/sun/tools/javac/Main : > > > Unsupported major.minor version 51.0***** > > > > > > **** > > > > > > Total time: 8 seconds**** > > > > > > **** > > > > > > **** > > > > > > *I’m new with Nutch dev and a little bit nuts with Eclipse. Can > > > somebody help me? > > > > > > Thanks a lot. > > > Danilo Fernandes***** > > > > > > > > > > > > **** > > > > > > **** > > > > > > -- > > > Don't Grow Old, Grow Up... :-) **** > > > > > > ** ** > > > > > > > > > > > > **** > > > > > > ** ** > > > > > > -- **** > > > > > > Kiran Chitturi**** > > > > > > > > > > > -- > > Kiran Chitturi > > > > > > > -- > *Lewis* >
