What an Array Gives You, and What It Refuses

Five things this topic established, and where each one was.

What the topic established, and which card it was on
The thing	Where
One variable, a fixed length, one element type, all decided at creation	One Name for Twenty Values
Declare, allocate, fill — and every slot starts at its type's default	From a Declaration to a Filled Array
The index is an offset, so the last one is `length - 1`	Why the Last Index of a Seven-Slot Array Is Six
`array.length`, `string.length()`, `collection.size()`	Three Spellings for Three Types
Arrays never grow; `Arrays.copyOf` makes a new one and copies	Why You Cannot Make an Array One Element Longer

The one worth carrying: an array is a fixed run of slots, and every surprise in this topic comes from that one fact — the offset, the exception, and the copy you have to make to add anything.

Java
Arrays