La anotación sólo está disponible para java 1.5 y superior cuando se genera Google App Engine Backend (JDK 1.8, nuevo ADT instalado)

Instalé ADT fresco: http://developer.android.com/sdk/index.html?hl=sk Entonces instalé:

• Problemas al ejecutar aplicaciones desplegadas en Google AppEngine
• Gestión de sesiones en Google App Engine con Android / IPhone
• Servidor GCM con motor de aplicaciones de Google
• Pakage para verificar el token de inicio de sesión de Google en Go que se ejecuta en GAE
• ¿Cómo utilizar la cuenta de google en tu propia aplicación de Android?

Cuando entré en el directorio readme de Eclipse hay:

Notas de la versión de Eclipse Project

Versión 4.3.0 Última revisión 29 de mayo de 2013

Creé nueva aplicación de Android y luego clic derecho en él-> Google-> Generar Google App Engine Backend y esto es lo que tengo:

Description Resource Path Location Type The import android.os.Build is never used MainActivity.java /A/src/com/uniquebullshit/a line 12 Java Problem Syntax error, annotations are only available if source level is 1.5 or greater MessageData.java /A-AppEngine/src/com/uniquebullshit/a line 22 Java Problem Syntax error, annotations are only available if source level is 1.5 or greater DeviceInfoEndpoint.java /A-AppEngine/src/com/uniquebullshit/a line 21 Java Problem Syntax error, annotations are only available if source level is 1.5 or greater MessageData.java /A-AppEngine/src/com/uniquebullshit/a line 28 Java Problem Syntax error, annotations are only available if source level is 1.5 or greater DeviceInfoEndpoint.java /A-AppEngine/src/com/uniquebullshit/a line 21 Java Problem Syntax error, annotations are only available if source level is 1.5 or greater MessageData.java /A-AppEngine/src/com/uniquebullshit/a line 29 Java Problem The import android.support.v7.app.ActionBar is never used MainActivity.java /A/src/com/uniquebullshit/a line 4 Java Problem Syntax error, annotations are only available if source level is 1.5 or greater DeviceInfo.java /A-AppEngine/src/com/uniquebullshit/a line 25 Java Problem Syntax error, annotations are only available if source level is 1.5 or greater DeviceInfo.java /A-AppEngine/src/com/uniquebullshit/a line 33 Java Problem Syntax error, annotations are only available if source level is 1.5 or greater MessageEndpoint.java /A-AppEngine/src/com/uniquebullshit/a line 46 Java Problem Syntax error, annotations are only available if source level is 1.5 or greater MessageEndpoint.java /A-AppEngine/src/com/uniquebullshit/a line 46 Java Problem Syntax error, parameterized types are only available if source level is 1.5 or greater MessageEndpoint.java /A-AppEngine/src/com/uniquebullshit/a line 98 Java Problem The method setMaxResults(int) in the type Query is not applicable for the arguments (Integer) MessageEndpoint.java /A-AppEngine/src/com/uniquebullshit/a line 95 Java Problem Syntax error, parameterized types are only available if source level is 1.5 or greater MessageEndpoint.java /A-AppEngine/src/com/uniquebullshit/a line 112 Java Problem Syntax error, 'for each' statements are only available if source level is 1.5 or greater MessageEndpoint.java /A-AppEngine/src/com/uniquebullshit/a line 105 Java Problem Syntax error, annotations are only available if source level is 1.5 or greater MessageEndpoint.java /A-AppEngine/src/com/uniquebullshit/a line 127 Java Problem Syntax error, annotations are only available if source level is 1.5 or greater MessageEndpoint.java /A-AppEngine/src/com/uniquebullshit/a line 126 Java Problem The method listDeviceInfo(String, Integer) in the type DeviceInfoEndpoint is not applicable for the arguments (null, int) MessageEndpoint.java /A-AppEngine/src/com/uniquebullshit/a line 142 Java Problem Syntax error, parameterized types are only available if source level is 1.5 or greater MessageEndpoint.java /A-AppEngine/src/com/uniquebullshit/a line 142 Java Problem Syntax error, annotations are only available if source level is 1.5 or greater MessageEndpoint.java /A-AppEngine/src/com/uniquebullshit/a line 74 Java Problem Syntax error, annotations are only available if source level is 1.5 or greater MessageEndpoint.java /A-AppEngine/src/com/uniquebullshit/a line 73 Java Problem Syntax error, annotations are only available if source level is 1.5 or greater MessageEndpoint.java /A-AppEngine/src/com/uniquebullshit/a line 76 Java Problem Syntax error, parameterized types are only available if source level is 1.5 or greater MessageEndpoint.java /A-AppEngine/src/com/uniquebullshit/a line 75 Java Problem Syntax error, annotations are only available if source level is 1.5 or greater MessageEndpoint.java /A-AppEngine/src/com/uniquebullshit/a line 77 Java Problem Syntax error, annotations are only available if source level is 1.5 or greater MessageEndpoint.java /A-AppEngine/src/com/uniquebullshit/a line 76 Java Problem Syntax error, parameterized types are only available if source level is 1.5 or greater MessageEndpoint.java /A-AppEngine/src/com/uniquebullshit/a line 81 Java Problem Syntax error, annotations are only available if source level is 1.5 or greater MessageEndpoint.java /A-AppEngine/src/com/uniquebullshit/a line 77 Java Problem Syntax error, annotations are only available if source level is 1.5 or greater DeviceInfoEndpoint.java /A-AppEngine/src/com/uniquebullshit/a line 140 Java Problem Type mismatch: cannot convert from Object to DeviceInfo DeviceInfoEndpoint.java /A-AppEngine/src/com/uniquebullshit/a line 143 Java Problem Syntax error, annotations are only available if source level is 1.5 or greater DeviceInfoEndpoint.java /A-AppEngine/src/com/uniquebullshit/a line 119 Java Problem Syntax error, annotations are only available if source level is 1.5 or greater DeviceInfoEndpoint.java /A-AppEngine/src/com/uniquebullshit/a line 139 Java Problem Type mismatch: cannot convert from Object to DeviceInfo DeviceInfoEndpoint.java /A-AppEngine/src/com/uniquebullshit/a line 154 Java Problem There was a problem generating the API metadata for your Cloud Endpoints classes: com.google.api.server.spi.config.ApiConfigException: class com.uniquebullshit.a.MessageEndpoint has no @Api annotation. A-AppEngine Unknown Google App Engine Cloud Endpoints Problem Marker Type mismatch: cannot convert from element type Object to DeviceInfo MessageEndpoint.java /A-AppEngine/src/com/uniquebullshit/a line 144 Java Problem Syntax error, 'for each' statements are only available if source level is 1.5 or greater MessageEndpoint.java /A-AppEngine/src/com/uniquebullshit/a line 144 Java Problem Syntax error, parameterized types are only available if source level is 1.5 or greater DeviceInfoEndpoint.java /A-AppEngine/src/com/uniquebullshit/a line 33 Java Problem Syntax error, annotations are only available if source level is 1.5 or greater DeviceInfoEndpoint.java /A-AppEngine/src/com/uniquebullshit/a line 34 Java Problem Syntax error, annotations are only available if source level is 1.5 or greater DeviceInfoEndpoint.java /A-AppEngine/src/com/uniquebullshit/a line 31 Java Problem Syntax error, annotations are only available if source level is 1.5 or greater DeviceInfoEndpoint.java /A-AppEngine/src/com/uniquebullshit/a line 32 Java Problem Syntax error, annotations are only available if source level is 1.5 or greater DeviceInfoEndpoint.java /A-AppEngine/src/com/uniquebullshit/a line 35 Java Problem Syntax error, parameterized types are only available if source level is 1.5 or greater DeviceInfoEndpoint.java /A-AppEngine/src/com/uniquebullshit/a line 39 Java Problem Syntax error, annotations are only available if source level is 1.5 or greater DeviceInfoEndpoint.java /A-AppEngine/src/com/uniquebullshit/a line 34 Java Problem Syntax error, annotations are only available if source level is 1.5 or greater DeviceInfoEndpoint.java /A-AppEngine/src/com/uniquebullshit/a line 35 Java Problem Syntax error, 'for each' statements are only available if source level is 1.5 or greater DeviceInfoEndpoint.java /A-AppEngine/src/com/uniquebullshit/a line 60 Java Problem Syntax error, parameterized types are only available if source level is 1.5 or greater DeviceInfoEndpoint.java /A-AppEngine/src/com/uniquebullshit/a line 65 Java Problem The method setMaxResults(int) in the type Query is not applicable for the arguments (Integer) DeviceInfoEndpoint.java /A-AppEngine/src/com/uniquebullshit/a line 51 Java Problem Syntax error, parameterized types are only available if source level is 1.5 or greater DeviceInfoEndpoint.java /A-AppEngine/src/com/uniquebullshit/a line 54 Java Problem Type mismatch: cannot convert from Object to DeviceInfo DeviceInfoEndpoint.java /A-AppEngine/src/com/uniquebullshit/a line 82 Java Problem Syntax error, annotations are only available if source level is 1.5 or greater DeviceInfoEndpoint.java /A-AppEngine/src/com/uniquebullshit/a line 97 Java Problem Syntax error, annotations are only available if source level is 1.5 or greater DeviceInfoEndpoint.java /A-AppEngine/src/com/uniquebullshit/a line 77 Java Problem Syntax error, annotations are only available if source level is 1.5 or greater DeviceInfoEndpoint.java /A-AppEngine/src/com/uniquebullshit/a line 78 Java Problem 

¿Cómo lidiar con eso? EDITAR: