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  Tutorial: Java General Java Java Arrays Tutorial

Arrays are dynamically created objects in Java code. An array can hold a number of variables of the same type. The variables can be primitives or object references; an array can even contain other arrays.

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Java Arrays

Arrays are dynamically created objects in Java code. An array can hold a number of variables of the same type. The variables can be primitives or object references; an array can even contain other arrays.

Declaring array variables
When we declare an array variable, the code creates a variable that can hold the reference to an array object. It does not create the array object or allocate space for array elements.

It is illegal to specify the size of an array during declaration. The square brackets may appear as part of the type at the beginning of the declaration or as part of the array identifier:

int[] i; // array of int
byte b[]; // array of byte
Object[] o, // array of Object
short s[][]; // array of arrays of short
Constructing arrays
You can use the new operator to construct an array. The size of the array and type of elements it will hold have to be included.


 

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