java菜鸟求助~collection容器问题

Question

import java.util.*;
public class Test {
public static void main(String[] args){
Collection c = new ArrayList();
c.add("hello");
c.add(new Name ("f1","l1"));
c.add(new Integer(100));
System.out.println(c.size());
System.out.println(c);
}

}
代码中
c.add(new Name ("f1","l1"));为什么总是报错呀。。。说Name cannot be resolved to a type。。。跪求各位大神

Answer 1

arraylist中的元素需要统一类型…