一直在努力 !

(1)在java中所有类都是object的子类,数组也不例外

(2)测试程序:

                  Object[] oObjArray = {"a","b"};

                  Object oObj = oObjArray;    //这句执行没有问题

                   String[] oStrArray = (String[] )oObj;  //不行

(3)测试程序:

                   Object o = new String[]{"a","b","c"};

                   String[] oStrArray = (String[])o; ///Ok