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The "EclipseEnvironment" page has been changed by JingguoYao. The comment on this change is: Add description for the configuration of Doclet API. http://wiki.apache.org/hadoop/EclipseEnvironment?action=diff&rev1=28&rev2=29 -------------------------------------------------- * Note that you can turn off the build under the Build tab, and refresh the project on the Refresh tab, avoiding unnecessary steps. 1. Refresh the Eclipse project. (Hit F5 or right-click on the project, and choose "Refresh") 1. If your default Eclipse JRE is not 1.6, go to Project > Properties > Java Build Path > Libraries, select the JRE System Library, click Edit, and select a 1.6 or later JRE that's installed on your system. You may also want to set the Java Compiler's JDK Compliance by going to Project > Properties > Java Compiler, check the "Enable project specific settings", and select 6.0 for the Compiler compliance level. - 1. Ensure that the Java version used matches the version of the project (currently 1.6 is used). This could be selected for the project by going to Project > Properties > Builders > Hadoop_Ant_Builders. Go to JRE tab and select an appropriate Java version. + 1. Ensure that the Java version used matches the version of the project (currently 1.6 is used). This could be selected for the project by going to Project > Properties > Builders > Hadoop_Ant_Builders. Go to JRE tab and select an appropriate Java version. And click ''Edit...'' to open JRE Definition dialog. Make sure that lib/tools.jar is among JRE System libraries. lib/tools.jar is needed for the use of Doclet API in hadoop common. + 1. Select `Project` | `Build Project`. ==== Troubleshooting ====
