Java中的通用函数(Generic functions in Java)

 我对Java中的一些通用语法不是很熟悉。 
 我遇到了这样的代码： 
 
public static<T> T foo(T... a)
 
 有人能以简洁的方式解释它的含义吗？ 
 这是否意味着foo（）需要一个T类型的数组并返回类型T？ 
 为什么不是下面的语法？ 
 
public static T foo(T[] a)
 
 我看了一下Oracle文档，但他们的例子似乎更容易理解： Oracle Generics 

I am not very familiar with some of the generic syntax in Java.
 I came across some code like this:
 
public static<T> T foo(T... a)
 
Can somebody explain what it means in a succinct way?
 Does it mean foo() takes in an array of type T and returns type T?
 Why isn't the syntax like this below?
 
public static T foo(T[] a)
 
I had a look at the Oracle docs but the example they have seems much easier to understand: Oracle Generics

原文：https://stackoverflow.com/questions/30700539