Access restriction: The constructor SunJCE() is not accessible due to restriction on required library E:\JDK\JDK1.6.0_03

今天在做JAVA网络编程实验，在搭建项目环境时出现了以下编译错误： Access restriction: The constructor SunJCE() is not accessible due to restriction on required library E:\JDK\JDK1.6.0_03\jdk1.6.0_03\jre\lib\ext\sunjce_provider.jar 翻译过来大概是：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。