Question

eclipse出现error：vector is a raw type。Reference to generic type Vector<E> should

部分程序如下：
public class Connection extends Thread {

private Socket netClient;
private Vector<Customer> userOnline;
private Vector<Chat> userChat;
private ObjectInputStream fromClient;
private PrintStream toClient;
private static Vector vList = new Vector();//出现warning
····
}
····public void serverLogin() {

try {
Customer clientMessage2 = (Customer) obj;

// 读文件
FileInputStream file3 = new FileInputStream("user.txt");
ObjectInputStream objInput1 = new ObjectInputStream(file3);
vList = (Vector) objInput1.readObject();//出现warning
···

我是初学者，请各位大哥大姐多多提点！
···

Answer 1

需要指定类型消除这个warning，例如存放int型
private static Vector <Integer> vList = new Vector<Integer>();

Answer 2

如果只是warning不是错误的话就不是大问题，一般可以忽略…………

Answer 3

这是警告可好？！提示你应该用泛型