主要是看一些文章，了解了openstack之后，把科技前沿都了解一下，然后在ubuntu上搭建起来 [链接] [链接] [链接]

Static methods for manipulating arrays are available in the java.util.Arrays and java.System classes. Assume the following declarations, where T is the array element type, either a primitive, object or either kind of type depending on which method is being called.