public class Print {    public static void main(String[] args) {        Object[] array = returnAObject();        String a = (String) array[0];        Struct b = (Struct) array[1];        int i = (Integer) array[2];        System.out.println(a);        System.out.println(b.s);        System.out.println(i);    }    public static Object[] returnAObject() {        Object[] array = new Object[4];        //对象数组现在存放不同类型的数据.array[0] = "abc";        array[1] = new Struct();        array[2] = 3;        return array;    }}class Struct {
   //随便写一个类    public int a = 3;    public String s = "Hello World!";    public Struct() {
   //安全留空    }}