Mac下无法运行uiaotomatorviewer

我安装了android studio，运行sdk／tools／bin下的uiautomatorviewer时，运行不了，有以下报错：

请问老师这是什么原因呢？

Last login: Wed Aug 22 17:32:34 on ttys000

-bash-3.2$ /Users/videojj/Library/Android/sdk/tools/bin/uiautomatorviewer ; exit;

-Djava.ext.dirs=/Users/videojj/Library/Android/sdk/tools/lib/x86_64:/Users/videojj/Library/Android/sdk/tools/lib is not supported.  Use -classpath instead.

Error: Could not create the Java Virtual Machine.

Error: A fatal exception has occurred. Program will exit.

logout

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