Java Arrays: Difference between revisions
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Array instances are objects. They are dynamically created, they can be assigned to a variable of type <code>Object</code> and all methods of class <code>Object</code> may be invoked on an array. | Array instances are objects. They are dynamically created, they can be assigned to a variable of type <code>Object</code> and all methods of class <code>Object</code> may be invoked on an array. | ||
An array instance contains a number of variables, called '''array components''' that have no names, and can be referenced instead by array access expressions that use non-negative integer indices. | |||
If the number of components of an array is zero, the array is said to be empty. If the array has n components, then it is said that the array has the length n. In this case, its components are referenced with zero-based indices from 0 to n-1. | |||
'''array element''' | '''array element''' | ||
Revision as of 00:38, 2 November 2021
External
- https://docs.oracle.com/javase/specs/jls/se8/html/jls-10.html
- https://docs.oracle.com/javase/tutorial/java/nutsandbolts/arrays.html
Internal
Overview
Array instances are objects. They are dynamically created, they can be assigned to a variable of type Object and all methods of class Object may be invoked on an array.
An array instance contains a number of variables, called array components that have no names, and can be referenced instead by array access expressions that use non-negative integer indices.
If the number of components of an array is zero, the array is said to be empty. If the array has n components, then it is said that the array has the length n. In this case, its components are referenced with zero-based indices from 0 to n-1.
array element
Array Types
Array Variables
Array Creation
Array Creation with an Expression
Array Creation with an Array Initializer
Array Access
Multidimensional Arrays
A multidimensional array is an array of multidimensional arrays.