Array

An array is a numerically indexed collection of elements holding values.

Related concepts:  TypeValue

Closest Wikipedia entry:  Array data type — In computer science, array is a data type that represents a collection of elements (values or variables), each selected by one or more indices (identifying keys) that can be computed at run time during program execution. Such a collection is usually called an array variable or array value. By analogy with the mathematical concepts vector and matrix, array types with one and two indices are often called vector type and matrix type, respectively.

Misconceptions about Array

23 documented Misconceptions

ArrayAccessWithParentheses

Parenthesis are used to access an element in an array

ArrayAllocationWithoutNew

Arrays are created without the new keyword

ArrayBracketCountIsLength

The number of brackets in an array type or an array initializer corresponds to the length of the array

ArrayElementTypeRepeats

The type of a multi-dimensional array is written as T[] T[] T[]

ArrayElementsUntyped

Elements of arrays are untyped

ArrayHasLengthMethod

To get the length of an array, one needs to call its length method

ArrayInitializerContentsInBrackets

Array initializers list the elements in square brackets

ArrayLengthCannotBeZero

An array cannot have a length of 0 elements

ArrayLengthPartOfType

The length of an array is part of its type

ArrayListIsArray

ArrayLists are arrays

ArrayRankIsLength

Array rank and array length are the same thing

ArrayRankNotPartOfType

The rank of an array is not part of its type

ArraysGrow

Arrays can grow dynamically

ForEachIteratesOverIndices

An enhanced for loop iterates over the indices of an array or a collection

ForEachVariableIsElement

One can assign to the variable of an enhanced for statement to store a value in the corresponding array or collection element

MultidimensionalArray

A multi-dimensional array is one thing

NoJaggedArrays

Multi-dimensional arrays have a rectangular shape

OnlyInnermostArrayElements

Only the elements of the innermost array of a multi-dimensional array are accessible

OutOfBoundsElementsAreNull

Out-of-bounds array elements are null