// Test of array stuff. Technically this probably isn't in java.lang. public class Array_1 { public static void main (String[] args) { int x[][] = { { 1, 2}, null }; System.out.println(Cloneable.class.isInstance(x)); // This example is from the Java Spec book. int y[][] = (int[][]) x.clone(); System.out.println(x == y); System.out.println(x[0] == y[0] && x[1] == y[1]); System.out.println(x.getClass().getSuperclass()); } }