You are creating an array of zero length (no slots to put anything in)

 int array[]={/*nothing in here = array with no slots*/};

and then trying to assign values to array slots (which you don't have, because there are none)

array[i] = number; //array[i] = element i in the array of length 0

You need to define a larger array to fit your needs

 int array[] = new int[4]; //Create an array with 4 elements [0],[1],[2] and [3] each containing an int value

You cannot make an empty array and then let it grow dynamically whenever the user enters a number in the command line. You should read the numbers and put them in an ArrayList instead. An ArrayList does not require a initial size and does grow dynamically. Something like this:

public void main(String[] args) {
    ArrayList<Integer> numbers = new ArrayList<Integer>();
    BufferedReader console = 
            new BufferedReader(new InputStreamReader(System.in));
    while(true) {
        String word = console.readLine();
        if (word.equalsIgnoreCase("end") {
            break;
        } else {
            numbers.add(Integer.parseInt(word);
        }
    }

Ofcourse you won't use while(true)and you won't put this in main, but it's just for the sake of the example

Arrays have fixed sizes. What you want is called a List.

List<String> newValues = new ArrayList<String>();
newValues.add("hello");

Here's the documentation.