要在64位系统上进行位移，应该使用1l，如下所示。
To get the shift done on a 64-bit system, 1l should be used as shown below.
JDK中还是没有干这事的，你依旧需要创建另外一个辅助方法，有可能在你的实现中会使用位操作和位移动。
There is nothing in the JDK to assist with this either, so you’ll need to create another helper method and probably use bitwise operations and bitshifting in your implementation.
你可以使用 Page Up 和Page Down 键来以帧为单位移动时间标尺，另外，如果想要更快移动，加按Shift。
Also to refine that you can use the Page Up and Page Down keys to move frame by frame within the timeline, and adding shift to the mix moves you 10 frames either way.
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