I got this issue when deploying my Java app to App Engine
Unable to update app: Cannot get the System Java Compiler. Please use a JDK, not a JRE. See the deployment console for more detailsUnable to update app: Cannot get the System Java Compiler. Please use a JDK, not a JRE. That is absurd because I set up jdk1.7 in Installed JREs as the following picture: [image: enter image description here] <http://i.stack.imgur.com/uCIi9.png> In the log file. Debugging information may be found in *C:\Users\AppData\Local\Temp\appengine-deploy3218365179732638698.log* Unable to update: java.lang.RuntimeException: Cannot get the System Java Compiler. Please use a JDK, not a JRE. at com.google.appengine.tools.admin.Application.compileJavaFiles(Application.java:904) at com.google.appengine.tools.admin.Application.compileJsps(Application.java:892) at com.google.appengine.tools.admin.Application.populateStagingDirectory(Application.java:687) at com.google.appengine.tools.admin.Application.createStagingDirectory(Application.java:629) at com.google.appengine.tools.admin.AppAdminImpl.doUpdate(AppAdminImpl.java:569) at com.google.appengine.tools.admin.AppAdminImpl.update(AppAdminImpl.java:58) at com.google.appengine.eclipse.core.proxy.AppEngineBridgeImpl.deploy(AppEngineBridgeImpl.java:433) at com.google.appengine.eclipse.core.deploy.DeployProjectJob.runInWorkspace(DeployProjectJob.java:158) at org.eclipse.core.internal.resources.InternalWorkspaceJob.run(InternalWorkspaceJob.java:38) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:53) *What is wrong?* This is my eclipse.ini -startup plugins/org.eclipse.equinox.launcher_1.3.0.v20120522-1813.jar--launcher.library plugins/org.eclipse.equinox.launcher.win32.win32.x86_64_1.1.200.v20120522-1813-product org.eclipse.epp.package.jee.product--launcher.defaultAction openFile--launcher.XXMaxPermSize256M-showsplash org.eclipse.platform--launcher.XXMaxPermSize256m--launcher.defaultAction openFile-vm C:\Program Files (x86)\Java\jdk1.7.0_79\bin-vmargs-Dosgi.requiredJavaVersion=1.5-Dhelp.lucene.tokenizer=standard-Xms40m-Xmx512m -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/google-appengine. To view this discussion on the web visit https://groups.google.com/d/msgid/google-appengine/efc70127-c10c-4923-abf5-5bf20bf858e6%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
