建立了两个类，第一个类创建People对象，第二个类创建集合对象并打印，但是打印不成功，问题出在哪里呢？请老司机看看。

（1）创建People对象：

public class People {
   private String name;
   private int cardID;
   
   public People(String name, int cardID){
       this.name=name;
       this.cardID=cardID;
   }
   
   public String method1() {
       return name;
   }
   public int method2() {
      return cardID;
  }
}

（2）建立List集合并打印

import java.util.List;
import java.util.LinkedList;
import java.util.Iterator;

public class Jianliyigejihe {

    public static void main(String[] args) {
        List <People>list1=new LinkedList<People>();
        list1.add(new People("阿一",2343));
        list1.add(new People("阿二",4444));
        list1.add(new People("阿三",5555));
        
        System.out.println("集合中的元素是：");
        Iterator<People> itt=list1.iterator();
        while(itt.hasNext());
        {
            People d1=itt.next();
            System.out.println(d1.method1()+" "+d1.method2());
        }
        
    }

}

public class Jianliyigejihe {

    public static void main(String[] args) {
        List <People>list1=new LinkedList<People>();
        list1.add(new People("阿一",2343));
        list1.add(new People("阿二",4444));
        list1.add(new People("阿三",5555));
        
        System.out.println("集合中的元素是：");
        Iterator<People> itt=list1.iterator();
        while(itt.hasNext());// here remove ';'
        {
            People d1=itt.next();
            System.out.println(d1.method1()+" "+d1.method2());
        }
        
    }

}

谢谢版主！

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