How to Declare and Initialize static array

[parulmahajan]

HI ,
Can anyone Please tell me how to create and initialize a static array of type int.

Actually i have a question like this...
Which two code fragments correctly create and initialize a static array
of int elements? (Choose two.)
A. static final int[] a = { 100,200 };
B. static final int[] a;
static { a=new int[2]; a[0]=100; a[1]=200; }
C. static final int[] a = new int[2] { 100,200 };
D. static final int[] a;
static void init() { a = new int[3]; a[0]=100; a[1]=200; }


Please answer...

[PhHein]

What stops you from trying?

[parulmahajan]

Illegeal modifier for parameter a; only final is permitted,

[parulmahajan]

hey thanks dear

it works.. problem was with the location of the array.

to create static array we must create and initialize it in static block only.

[Ike]

I'm working with some iteration pattern, and I don't know how many members array is going to have.
When I declare an array like:
static double[] data;


...I get errors. But if I do it like this, the problem is gone :
static double[] data = new double[90];

Values are added later with a method:

public void setData(int matrixSize){


for (int i=0 ; i<matrixSize ; i++){
data[i]=laGrange.output[i];
}





I even try doing:
...
static double[] data;
...
public void setData(int matrixSize){

data = new double[matrixSize];
for (int i=0 ; i<matrixSize ; i++){
data[i]=laGrange.output[i];
}


1. There is an error cause of my code(somewhere later) ?
2. There is no way to have an 'undefined size' static (or non-static) array ?

[Junky]

In future start your own thread, do not hijack someone elses. Especially an old one.

If you do not know what size your array will be then use a data structure from the Collection framework. Probably an ArrayList.

[DarrylBurke]

Ike, like Junky said, get your own thread. I'm closing this one and your post (and Junky's response) will be removed later.

db