Build Errors after OpenCV Library Import

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I use Win 8, jdk7, Eclipse 4.2, Andoird SDK (ADT) Rev 21, OpenCV 2.4.3, C/C++ Dev. Tools 8.1.1. Installed are all Android Targets since API Level 8. As described in: http://docs.opencv.org/doc/tutorials/introduction/android_binary_package/android_dev_intro.html#android-dev-intro

After importing the library and sample projects from OpenCV Folder I receive following errors in the File OpenCVEngineInterface.java. Same happens to me in mac os. Has somebody an idea?

Description Resource    Path    Location    Type 
The method asBinder() of type OpenCVEngineInterface.Stub must override a superclass method  OpenCVEngineInterface.java  /OpenCV Library -
2.4.3/gen/org/opencv/engine line 35 Java Problem 
The method asBinder() of type OpenCVEngineInterface.Stub.Proxy must override a superclass method    OpenCVEngineInterface.java  /OpenCV Library -
            2.4.3/gen/org/opencv/engine line 96 Java Problem 
The method getEngineVersion() of type OpenCVEngineInterface.Stub.Proxy must override a superclass method    OpenCVEngineInterface.java  /OpenCV Library - 2.4.3/gen/org/opencv/engine   line 107    Java Problem 
    The method getLibPathByVersion(String) of type OpenCVEngineInterface.Stub.Proxy must override a superclass method   OpenCVEngineInterface.java  /OpenCV Library - 2.4.3/gen/org/opencv/engine   line 129    Java Problem 
    The method installVersion(String) of type OpenCVEngineInterface.Stub.Proxy must override a superclass method    OpenCVEngineInterface.java  /OpenCV Library - 2.4.3/gen/org/opencv/engine   line 152    Java Problem 
    The method getLibraryList(String) of type OpenCVEngineInterface.Stub.Proxy must override a superclass method    OpenCVEngineInterface.java  /OpenCV Library - 2.4.3/gen/org/opencv/engine   line 175    Java Problem