楼主看下我擅自修改的代码，看看有没有违背楼主的意思，首先我把你的 Iterator it =  CourseToSelect.iterator();改成了TestCourse it =  new TestCourse();然后还有你的一个while循环，我改过后是正常运行了，楼主的循环不知道有没有问题，不过，Iterator it =  CourseToSelect.iterator();改成TestCourse it =  new TestCourse();没错吧，后面的课程我也没看，我要是理解错了，莫怪哈

package com.imooc;

import java.util.ArrayList;

import java.util.Arrays;

import java.util.Iterator;

import java.util.List;

public  class TestCourse {

public List CourseToSelect;

public TestCourse(){

this.CourseToSelect =new ArrayList();

}

@SuppressWarnings("unchecked")

public void TestAdd(){

Course c1 = new Course("1","数据结构");

CourseToSelect.add(c1);

Course temp1 = (Course)CourseToSelect.get(0);

System.out.println("添加的课程是："+temp1.id+":"+temp1.name);

Course c2 = new Course("2","C语言");

CourseToSelect.add(0,c2);

Course temp2 = (Course)CourseToSelect.get(0);

System.out.println("添加的课程是："+temp2.id+":"+temp2.name);

Course[] course1 = {new Course("3","离散数学"),new Course("4","汇编语言")};

CourseToSelect.addAll(Arrays.asList(course1));

Course temp3 = (Course)CourseToSelect.get(2);

Course temp4 = (Course)CourseToSelect.get(3);

System.out.println("添加的两门课程是："+temp3.id+":"+temp3.name+temp4.id+":"+temp4.name);

Course[] course2 = {new Course("5","高等数学"),new Course("6","大学英语")};

CourseToSelect.addAll(2,Arrays.asList(course2));

Course temp5 = (Course)CourseToSelect.get(2);

Course temp6 = (Course)CourseToSelect.get(3);

System.out.println("添加的两门课程是："+temp5.id+":"+temp5.name+temp6.id+":"+temp6.name);

}

public static void main(String[] args){

TestCourse it =  new TestCourse();//这里提示错误不能对非静态字段 CourseToSelect 进行静态引用

it.TestAdd();

}

}

代码贴出来看看