注释仅适用于 java 1.5 创建后端时更高 Google App Engine/JDK 1.8, 安装新 ADT/

我安装了新鲜 ADT:
http://developer.android.com/sdk/index.html?hl=sk
然后我安装了：


当我进入目录时 Eclipse readme, 有：

Eclipse 对项目发布的说明

释放 4.3.0 最新版本 29 可能 2013 当年

我创建了一个新鲜的应用程序 Android, 然后右键单击它 - > Google->生成 Google App Engine Backend, 这就是我得到的：

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

如何处理它？

EDIT: