Multiple types on a Java multi-dimensional array

Question

From what I know, only one type of object/literal can be stored on a multi-dimensional Java array.

so for instance, on a 2-dim'l array a[][], I can not store a Type-1 array on a[0] and Type-2 array on a[1] unless there's some polymorphic relationship between Type-1 & Type-2 and I put it into use there.

I'm looking to verify that there's no way to get around this. so, I cannot somehow put an int array on a[0], a char array on a[1]-- Java arrays are single-type.

I'm aware that I can declare 2 parallel arrays-- one int[] and one char[] and that solves it.

Thanks in advance.

//=====================

Edit: The good old object class solves it-- as the useful answers below pointed out. Thank you for your input.

Why are collections not fitting? You could use a something like List<Object, List<Object>> — Antoine Wils
– Antoine Wils, Commented Feb 5, 2014 at 21:01

Juvanis · Accepted Answer · 2014-02-05 20:56:03Z

5

You can use Object[].

Object[] arrays = new Object[2];
arrays[0] = new int[10];
arrays[1] = new char[10];

answered Feb 5, 2014 at 20:56

Juvanis

26k5 gold badges74 silver badges88 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

AlexWien · Accepted Answer · 2014-02-05 20:56:40Z

4

You can use an array of Objects:

Object[] x = new Object[2];
x[0] = new Integer[3];
x[1] = new String[3];

answered Feb 5, 2014 at 20:56

AlexWien

28.9k6 gold badges56 silver badges84 bronze badges

3 Comments

Juvanis Over a year ago

@Roam P.S. my answer was the first.

AlexWien Over a year ago

Yes first, but it did not show the usage of different types, which you added later.

Roam Over a year ago

well- can ttell by the secs. one of oyu got the upvote, the other the accept. trying to be fair to e1.

Collectives™ on Stack Overflow

Multiple types on a Java multi-dimensional array

2 Answers 2

Comments

3 Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

3 Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related