Array in an Array

Question

I want to know if it possible to handle an array in another array, i never heard of something like that and i'm curious if it is possible, because i'm writing a little programm rigth now and i would need something like this! An example(maybe this can be solved other than using an array in an array): i have two String arrays like this:

public String[] stringArray1 = { "0", "1", "2", "3" }, stringArray2 = { "0", "1", "2", "3" };

now i would need something like this:

public /*type?*/[] allArrays = { stringArray1, stringArray2 };

because i need to access it using an for loop and i dont want to use thousands of if statements to get to the stringArrays(this is just an example in my real programm there are like 100 arrays):

for(int i = 0; i < numberOfArrays/*100*/; i+=2)
test/*a rondom void*/(allArrays[i], allArrays[i+1]);

in my programm there are always two arrays connected that's why i call one with i and one with i+1... so now this is how my test looks like:

public void test(/*type?*/ test1, /*type?*/ test2)
{
//now i need to use test1 & test2 as string to f.e. like this:
if(test1[2].contains("1"))
//do something
}

`String[][]`, a two dimensional array, is actually an array containing arrays. — SomeJavaGuy, Mar 01 '16 at 14:41

score 2 · Answer 1 · edited May 23 '17 at 12:09

2

This is a duplicate. You need an array of arrays.

public String[][] allArrays = { stringArray1, stringArray2 };

edited May 23 '17 at 12:09

Community

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answered Mar 01 '16 at 14:42

m1o2

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You admit it's a duplicate, so why answer and not just mark as dup? – Idos Mar 01 '16 at 14:44
@Idos I don't think I have enough SO reputation to mark it as duplicate. – m1o2 Mar 01 '16 at 14:45
flag as duplicate :) (I didn't downvote, just to be clear) – Idos Mar 01 '16 at 14:45
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@Idos I just did, thank you :) – m1o2 Mar 01 '16 at 14:46

score 2 · Accepted Answer · edited Mar 01 '16 at 15:28

2

String[][] arrays = new String[][] { stringarray1, stringarray2, stringarray3 };

edited Mar 01 '16 at 15:28

tomtomssi

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answered Mar 01 '16 at 14:43

SmashCode

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if you want your code to be dynamic try using arraylist ArrayList> list1 = new ArrayList>(); ArrayList listoflists = new ArrayList(); nodes.add(listoflists); – SmashCode Mar 01 '16 at 14:47
exactly what i've looked for! thanks :) – SyxDuLappen Mar 01 '16 at 14:56

Array in an Array

2 Answers2