/*
    This shows how arrays are declared, and how memory is used
*/

public class arraydec {
    public static void main(String[] args) {
        // this only declares an array, there is no space reserved in memory
        int[] series1;

        // this declares the array, and also fills it with data
        int[] series2 = {1,2,4,8,16};

        // this allocates space for the array, but it will be empty
        int[] series3 = new int[5];

        // we can copy the data into the allocated, but empty series3
        for(int i=0; i<5 ; i++) {
            series3[i] = series2[i];
        }

        // What will be in series1 after this?
        series1 = series3;

        // What will this print out now?
        System.out.println(series1.length);
    }
}