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这样的错误是啥原因呢。。。。高手们 帮帮忙
摘要: 这样的错误是啥原因呢。。。。高手们 帮帮忙
java.security.AccessControlException: access denied (java.lang.RuntimePermission preferences)
at java.security.AccessControlContext.checkPermission(Unknown Source)
at java.security.AccessController.checkPermission(Unknown Source)
at java.lang.SecurityManager.checkPermission(Unknown Source)
at java.util.prefs.Preferences.userRoot(Unknown Source)
at java.util.prefs.Preferences.userNodeForPackage(Unknown Source)
at matrix.RealAlar.getRealAlar.
(RealtimeAlarm.java:133)
at matrix.RealAlar.getRealAlar(RealAlar.java:76)
at matrix.mainapple.MainApple.doAlar(MainApple.java:278)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at sun.plugin.com.MethodDispatcher.invoke(Unknown Source)
at sun.plugin.com.DispatchImpl.invoke(Unknown Source)
access denied 拒绝访问??
程序?
ding yixia
没有为你的程序指定安全管理器,应该在你的代码前加上
System.setSecurityManager(new ***SecurityManager());