Object obj[]=lists.get(i);
String str[]=Arrays.copyOf(obj, obj.length, String[].class);
或者
(String[])list.toArray(new String[0]);
Object obj[]=lists.get(i);
String str[]=Arrays.copyOf(obj, obj.length, String[].class);
或者
(String[])list.toArray(new String[0]);