Java Program to extend the size of an Integer array

public class Demo {
	public static void main(String[] args) {
		Integer[] arr = new Integer[] { 50, 100, 150, 200, 400, 500, 800, 1000};
		System.out.println("All the elements before extending the array...");
		for (Integer i:arr)
			System.out.println(i);
			Integer[] new_size = new Integer[15];
			new_size[8] = 2000;
			new_size[9] = 3000;
			new_size[10] = 4000;
			new_size[11] = 5000;
			new_size[12] = 6000;
			new_size[13] = 9000;
			new_size[14] = 10000;
			System.arraycopy(arr, 0, new_size, 0, arr.length);
			System.out.println("All the elements after extending the array...");
			for (Integer i: new_size)
				System.out.println(i);
	}
}