Passing an array method to a constructor

Question

I'm studying Java this summer (in NZ) and having a bit of trouble with an exersize in my book, the lab isn't open for marking at the moment, so I'm trying to do it at home.
I have a method readArray in the application method, which returns an array. I wish to pass it to the support class Constructor, and have the constructor store the array as instance data so I can sort it later. I can pass it fine by doing:
ReadData data = new ReadData(readArray());
from the main method.
However, I don't know how to store it as instance data, this is all I have so far within the support class:
private int[] array;
public ReadData(int[]array){
this.array[] = array[];
However, while compiling i get an error: not a statement. I am pretty certain that I simply have done it wrong. Can someone give me a hand?

Answer 1

is this what you are trying to do?
i think the following will help you
class Demo {
     private int arr [] = new int[10];
     public Demo(){
     public Demo(int arr[]){
          this.arr = arr;
     public void printArr(){
          for(int i =0;i<arr.length;i++){
               System.out.println(" "+arr);
public class Test{
     public static void main(String args[]){
          Test t = new Test();
          Demo d = new Demo(t.readArray());
          d.printArr();
     public int[] readArray(){
          int arr[]= {10,20,30,40,50,60,70,80,90,100};
          return arr;