Lots of interesting calls pass through the security manager.
大量有趣的调用通过安全管理器传递。
If there's no permission, the security manager throws an exception.
如果未许可,安全性管理器抛出一个例外。
Permissions must be granted for situations where applets or applications that use JCE are run with the security manager installed.
如果安装了安全管理器,对于使用 JCE 的 applet 或应用程序必须授权许可。
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