How to formatting a print of a 2D Array in Java

Question

I use this...

IO.println( Arrays.deepToString( array ) );

to print my Array on the Screen. The result:

[[., ., ., ., ., ., .], [., ., ., ., ., ., .], [., ., ., ., ., ., .], [., ., .,
., ., ., .], [., ., ., ., ., ., .]]

My problem, I want it would looking like this:

[[., ., ., ., ., ., .], 
 [., ., ., ., ., ., .], 
 [., ., ., ., ., ., .], 
 [., ., ., ., ., ., .], 
 [., ., ., ., ., ., .]]

Can you help me to find a way to format this "print of an array"?

Thank you very much!

and sorry for my english...

Octoshape · Accepted Answer · 2013-12-11 17:37:19Z

2

You could use this:

IO.println(Arrays.deepToString(array).replace("], [", "],\n ["));

Thus replacing every ], [ by ],\n [ whereas \n adds a newline to the string.

edited Dec 11, 2013 at 17:37

answered Dec 11, 2013 at 17:25

Octoshape

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1 Comment

Brian S Over a year ago

You'll want a space after the \n to match the OP's sample output.

abysmaldan · Accepted Answer · 2013-12-11 17:33:03Z

0

add \n between the segments

System.out.println([[.,.,.], \n [[.,.,.], \n .......);

as you continue the pattern each \n starts a new line

Edit: result of that code would be: (also dont use the format just use your array and array number ie: System.out.println(array[1] /n array[2] /n array[3]

[[.,.,.],

.........

edited Dec 11, 2013 at 17:33

answered Dec 11, 2013 at 17:23

abysmaldan

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2 Comments

Kristjan Over a year ago

Thanks for answering. To do this, was one of my first trys... The problem is that I dont know the "size of the array". Thats why I use the deepToString method. And I dont found a way to tell this method to use "/n" between the rows

abysmaldan Over a year ago

array.length with no parenthesis will tell you the array length, the /n should be \n sorry

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