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POFailed to deploy to Google App Engine because --use_java7 flag has not been set
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copied!<blockquote> <p>------------ Deploying frontend ------------</p> <p>Preparing to deploy: Created staging directory at: 'C:\Users\ADMINI~1\AppData\Local\Temp\appcfg2555411734473986257.tmp' java.lang.RuntimeException: The application contains Java 7 classes, but the --use_java7 flag has not been set.</p> <p>Debugging information may be found in C:\Users\Administrator\AppData\Local\Temp\appengine-deploy7182870224187999057.log</p> </blockquote> <p>Debug Log:</p> <blockquote> <p>Unable to update: java.lang.RuntimeException: The application contains Java 7 classes, but the --use_java7 flag has not been set. at com.google.appengine.tools.admin.Application.createStagingDirectory(Application.java:576) at com.google.appengine.tools.admin.AppAdminImpl.doUpdate(AppAdminImpl.java:370) at com.google.appengine.tools.admin.AppAdminImpl.update(AppAdminImpl.java:53) at com.google.appengine.eclipse.core.proxy.AppEngineBridgeImpl.deploy(AppEngineBridgeImpl.java:433) at com.google.appengine.eclipse.core.deploy.DeployProjectJob.runInWorkspace(DeployProjectJob.java:148) at org.eclipse.core.internal.resources.InternalWorkspaceJob.run(InternalWorkspaceJob.java:38) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:53)</p> </blockquote> <p>I'm attempting to deploy a google app to my google app engine account and eclipse is giving me this error. It seems rather straight forward, but I can't find where to set a flag for java7. </p> <p>I'm using the latest version of Eclipse (Juno Service Release 1) and my google plugin is 4.2.</p>

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