Java Project报错:Access restriction is not accessible due to restriction on required library

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eclipse中编译Hadoop 项目时这几行报错:

import com.sun.security.auth.NTUserPrincipal;import com.sun.security.auth.UnixPrincipal;import com.sun.security.auth.module.Krb5LoginModule;


错误提示为:

Access restriction: The type NTUserPrincipal is not accessible due to restriction on required library /usr/lib/jvm/java-6-openjdk-amd64/jre/lib/rt.jar

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。



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