package com.imooc.collection;

import java.util.ArrayDeque;

import java.util.ArrayList;

import java.util.List;

public class ListTest {

/**

 * 用于存放备选课程的List

 */

public List coursesToSelect;

public ListTest(){

this.coursesToSelect=new ArrayList();

}

//用于往coursesToSelect中添加备选课程

public void testAdd(){

//创建一个课程对象，并通过调用add方法，添加到备选课程List中

Course cr1=new Course("1","数据结构");

coursesToSelect.add(cr1);

Course temp=(Course) coursesToSelect.get(0);

System.out.println("添加了课程："+temp.id+":"+temp.name);

Course cr2=new Course("2","C语言");

coursesToSelect.add(0, cr2);

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

System.out.println("添加了课程："+temp2.id+":"+temp2.name);

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

   coursesToSelect.addAll(ArrayDeque.aslist(course));

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

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

   System.out.println("添加了两门课程："+temp3.id+":"+temp3.name+";"+temp4.id+":"+temp4.name);

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

   coursesToSelect.addAll(2,ArrayDeque.aslist(course2));

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

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

   System.out.println("添加了两门课程："+temp5.id+":"+temp5.name+";"+temp6.id+":"+temp6.name);

}

public static void main(String[] args){

ListTest lt=new ListTest();

lt.testAdd();

}

}

导入import java.util.Arrays;
import java.util.List;
import java.util.ArrayList;
import java.util.Scanner;

导入包

能不能发一下ListTest的源码。。互相学习