E get(int index)返回值是普通类还是对象类？

zhouchao0118

E get(int index)Returns the element at the specified position in this list.
Parameters:index - index of the element to returnReturns:the element at the specified position in this listThrows:IndexOutOfBoundsException - if the index is out of range (index < 0 || index >= size())
话说，怎么知道自己有没有封错呢？https://docs.oracle.com/javase/8/docs/api/

创世魂

返回的是个  模板类型  ，也叫  泛型