android 3des加密Access restriction: The constructor SunJCE() is not accessible due to restrictio

Access restriction: The constructor SunJCE() is not accessible due to restriction on required library... 
     在研究java加密算法时出现了以下编译错误： Access restriction: The constructor SunJCE() is not accessible due to restriction on required library 
sunjce_provider.jar 由于必须的库限限制访问，SunJCE() 构造函数不可访问。 

       在网上搜了一下，解决办法是修改编译选项，方法如下：Window -> Preferences -> Java -> Compiler -> Errors/Warnings -> Deprecated and restricted API -> Forbidden reference (access rules) -> Warnings，或者在项目上修改编译选项。