Java, Copy Size of an Array

Question

I just took up Java and was wondering. Let's say I have an array (in my case multidimensional) and I wanted to make a copy of it but using a different variable, e.g. I have a boolean array

boolean[][] arrBool = [2][3]

and I wanted to create an int array of the same dimensions

int[][] arrInt= [2][3]

array. What would the simplest way to do this be?

Thanks

Yassin Hajaj · Accepted Answer · 2016-03-18 10:44:54Z

4

Use length, it returns the length of an array

int[][] arrInt = new int[arrBool.length][arrBool[0].length]

edited Mar 18, 2016 at 10:44

Yassin Hajaj

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answered Mar 18, 2016 at 10:40

Breeze

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1 Comment

Yassin Hajaj Over a year ago

A minimum explaination may be useful sometimes.

ControlAltDel · Accepted Answer · 2016-03-18 10:42:52Z

3

Just as you'd think you would

boolean[][] arrBool = new boolean[2][3];
int[][] arrInt = new int[2][3];

But I guess you probably mean what if the dimensions are dynamic. Then you could do

boolean[][] arrBool = ...;
int[][] arrInt = new int[arrBool.length][arrBool[0].length];

answered Mar 18, 2016 at 10:42

ControlAltDel

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