集合list里存储list，要遍历最底层list的对象元素的遍历方法

 package com.wtd;

 import java.util.ArrayList;
 import java.util.HashSet;
 import java.util.Iterator;
 import java.util.List;
 import java.util.Set;

 public class L16 {

     /**
      * @desc 需要将list传到另个方法里怎么用list遍历userList和dpList？
      * @param args
      * @throws Exception
      */
     public static void main(String[] args) throws Exception {
         // TODO Auto-generated method stub
         List list = new ArrayList<ArrayList>();
         User user= new User();
         user.setAge(18);
         user.setName("andi");
         Department department= new Department();
         department.setDepartId(7);
         department.setDepartName("Program");
         List<User> userList = new ArrayList();//用于接收从数据库查出的数据
         userList.add(user);
         List<Department> dpList = new ArrayList();//用于接收从数据库查出的数据
         dpList.add(department);
         list.add(userList);
         list.add(dpList);
         getElement(list);
     }
     public static void getElement(List list) throws Exception{
         for (Iterator iterator = list.iterator(); iterator.hasNext();) {
             ArrayList listSmall = (ArrayList) iterator.next();
             for (Iterator iterator2 = listSmall.iterator(); iterator2.hasNext();) {
                 Object objectSmall= iterator2.next();
                 String className = objectSmall.getClass().getName();
                 if ("com.wtd.User".equalsIgnoreCase(className)) {//com.wtd.User
                     System.out.println("className.user="+className);
                     User userSmall= (User) objectSmall;
                     System.out.println("user.name:"+userSmall.getName()+"\r\nuser.age:"+userSmall.getAge());
                 }else if ("com.wtd.Department".equalsIgnoreCase(className)) {
                     System.out.println("className.department="+className);//com.wtd.Department
                     Department departmentSmall= (Department) objectSmall;
                     System.out.println("department.departname:"+departmentSmall.getDepartName()+"\r\ndepartment.departid:"+departmentSmall.getDepartId());
                 }

             }

         }

     }

 }

 class User{
     int age;
     String name;
     public int getAge() {
         return age;
     }
     public void setAge(int age) {
         this.age = age;
     }
     public String getName() {
         return name;
     }
     public void setName(String name) {
         this.name = name;
     }

 }

 class Department{
     int departId;
     String departName;
     public int getDepartId() {
         return departId;
     }
     public void setDepartId(int departId) {
         this.departId = departId;
     }
     public String getDepartName() {
         return departName;
     }
     public void setDepartName(String departName) {
         this.departName = departName;
     }

 }

解决此URL提出的问题：http://q.cnblogs.com/q/79494/