import java.util.Arrays;

class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		Object[] arr1 = new Object[1];
		Object[] arr2 = new Object[1];
		arr1[0] = arr2;
		arr2[0] = arr1;
		System.out.println(Arrays.deepToString(arr1));
	}
}