Can we generate an array for class object?

[gaurav2211]

class Box {
double width;
double height;
double depth;
Box() { // pass object to constructor
width = 1;
height = 2;
depth = 3;
}
class OverloadCons2 {
public static void main(String args[]) {
ArrayList<Box> a = new ArrayList<Box>();
for(int n=0;n<200;n++)
{
a.add(new Box()); //alive,score,sa[]
}
Here I want to create an array for the the width parameters of all the objects of type Box.

}
}
Problem Statement:
I want to create an array w[] for the the width parameters of all the objects of type Box such that
w[0]= a.get(0).width
w[1]= a.get(1).width
w[2]= a.get(2).width
......
Similary I want to create arrays for length height etc...There are lots of parameters in class Box . So I am wondering if there is a direct method for this kind of transformation
I can do this with a For loop. But I have to do it repeatedly for different parameters in Box class for several 1000 times.

Any help would be highly appreciated.

[Fubarable]

this begs the question: why? Why do you want to do this? What are you going to do with the array that you can't do with the already existing arraylist?

[gaurav2211]

This is part of a big problem. So cannot type the entire code here. I want add all widths, lengths, heights seperately.

Earlier I have created a SUM function which will take an array as argument.
Sum(array[])

[Fubarable]

This is part of a big problem. So cannot type the entire code here.

didn't ask for the entire code.

I want add all widths, lengths, heights seperately.

so give them setters and add them in a loop. Still no need to create a separate array.

Earlier I have created a SUM function which will take an array as argument.
Sum(array[])

You can create a similar method that takes the ArrayList as argument.

[gaurav2211]

I will try this out and will return to the thread ......It got resolved so fast:)