testruntimepermission.java

本书是一本为Java学习者在基础内容学习结束后进行课程设计时提供参考的指导书

package apibook.c2.s3;

import java.security.AccessController;
public class TestRuntimePermission {
  public static void main(String[] args) {
    RuntimePermission pkcheck=new RuntimePermission("accessClassInPackage.sun.*");
    RuntimePermission domncheck=new RuntimePermission("getProtectionDomain");
    RuntimePermission iocheck=new RuntimePermission("setIO");

    try {
      AccessController.checkPermission(pkcheck);
      AccessController.checkPermission(domncheck);
      AccessController.checkPermission(iocheck);
    }
    catch (SecurityException ex) {
      ex.printStackTrace();
    }
  }
}
//安全授权
/**grant{
  permission java.lang.RuntimePermission "accessClassPackage.*";
  permission java.lang.RuntimePermission "getProtectionDomain";
}*/