How can a string array store arrays?

Question

I know that the array declaration below is correct:

String[][] arrayNew={{"teresa","human","jennifer"},{"18","20"},{"nothing"}};

I understand that

String

and

array

are two different object types in java.So how come the

string array arrayNew

is successfully storing three different arrays in it.
An

int

array can not store

doubles

but how come a

string array

is able to store

arrays

?

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Answer 1

You are just creating a 2D array (An array of String array).

On this particular case, you created a jagged array.

You could do the same for int array as well:

int[][] array = {{1,2,3}, {4,5}, {6}};

Multidimensional arrays are array of arrays:

String[] arrayA;       //Array of Strings
String[][] arrayB;     //Array of (Array of Strings)
String[][][] arrayC;   //Array of (Array of (Array of Strings))
String[][][][] arrayD; //Array of (Array of (Array of (Array of Strings)))

How can a string array store arrays?

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