Question

如果一个集合没有定义泛型 这个集合里面存的是个对象数组，怎么取到这个集合中对象的各项值

Answer 1

public static void main(String[] args) {

List li =new ArrayList();

String[] a = {"A","2","3","4"};

String[] b = {"5","6","7","8"};

String[] c = {"9","10","J","Q","K"};

li.add(a);

li.add(b);

li.add(c);

for(int i =0;i<li.size();i++){

String[] a1 = (String[]) li.get(i);

for(int j =0;j<a1.length;j++){

System.out.println(a1[j]);

}

}

}