樓主看下我擅自修改的代碼，看看有沒(méi)有違背樓主的意思，首先我把你的?Iterator it = ?CourseToSelect.iterator();改成了TestCourse it = ?new TestCourse();然后還有你的一個(gè)while循環(huán)，我改過(guò)后是正常運(yùn)行了，樓主的循環(huán)不知道有沒(méi)有問(wèn)題，不過(guò)，Iterator it = ?CourseToSelect.iterator();改成TestCourse it = ?new TestCourse();沒(méi)錯(cuò)吧，后面的課程我也沒(méi)看，我要是理解錯(cuò)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","數(shù)據(jù)結(jié)構(gòu)");

CourseToSelect.add(c1);

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

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

Course c2 = new Course("2","C語(yǔ)言");

CourseToSelect.add(0,c2);

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

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

Course[] course1 = {new Course("3","離散數(shù)學(xué)"),new Course("4","匯編語(yǔ)言")};

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

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

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

System.out.println("添加的兩門(mén)課程是："+temp3.id+":"+temp3.name+temp4.id+":"+temp4.name);

Course[] course2 = {new Course("5","高等數(shù)學(xué)"),new Course("6","大學(xué)英語(yǔ)")};

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

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

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

System.out.println("添加的兩門(mén)課程是："+temp5.id+":"+temp5.name+temp6.id+":"+temp6.name);

}

public static void main(String[] args){

TestCourse it = ?new TestCourse();//這里提示錯(cuò)誤不能對(duì)非靜態(tài)字段 CourseToSelect 進(jìn)行靜態(tài)引用

it.TestAdd();

}

}

代碼貼出來(lái)看看