package java_test; import java.util.ArrayList; import java.util.Iterator; import java.util.List; import java.util.ListIterator; class Person{ private String name; private int age; public String getName() { return name; } public void setName(String name) { this.name = name; } public int getAge() { return age; } public void setAge(int age) { this.age = age; } public Person() { super(); // TODO Auto-generated constructor stub } public Person(String name, int age) { super(); this.name = name; this.age = age; } } public class ListItertorDemo { public static void main(String[] args) { List list=new ArrayList(); Person p1 =new Person("lisi1",12); Person p2 =new Person("lisi2",12); Person p3 =new Person("lisi3",12); list.add(p1); list.add(p2); list.add(p3); for (Iterator it = list.iterator(); it.hasNext();) { Person p = (Person) it.next();//it.next() 迭代器取出的元素都是object类型的,需要用到具体对象内容时,需要向下转型 System.out.println(p.getName()); } } }