安装eclipse adt r14时出现异常

安装eclipse adt r14时出现错误Warning:You are installing software that contains unsigned content.The

安装eclipse adt r14时出现错误
Warning:You are installing software that contains unsigned content.The authenticity or validity of this software cannot be established.是什么意思?


[解决办法]
警告: 安装包含未签名的内容的软件。无法保证本软件的有效性