java1.5中继承接口是不需要@Override的，而在1.6中是需要添加@Override注解的，如果项目的编译器是1.5版本的就可能报错The method xxx of type must override a superclass method.
解决此问题的办法是修改java编译器的版本，方法是：elicpse的Project菜单 --> Properties --> 找到Java Compiler将Compiler Compliance level修改为1.6即可。
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NULL 博文链接：https://thaipine.iteye.com/blog/2354220
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