package com.imooc.collection;

import java.util.ArrayDeque;

import java.util.ArrayList;

import java.util.List;

public class ListTest {

/**

?* 用于存放備選課程的List

?*/

public List coursesToSelect;

public ListTest(){

this.coursesToSelect=new ArrayList();

}

//用于往coursesToSelect中添加備選課程

public void testAdd(){

//創建一個課程對象，并通過調用add方法，添加到備選課程List中

Course cr1=new Course("1","數據結構");

coursesToSelect.add(cr1);

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

System.out.println("添加了課程："+temp.id+":"+temp.name);

Course cr2=new Course("2","C語言");

coursesToSelect.add(0, cr2);

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

System.out.println("添加了課程："+temp2.id+":"+temp2.name);

Course[] course={new Course("3","離散數學"),new Course("4","匯編語言")};

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

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

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

? ?System.out.println("添加了兩門課程："+temp3.id+":"+temp3.name+";"+temp4.id+":"+temp4.name);

? ?

? ?Course[] course2={new Course("5","高等數學"),new Course("6","大學英語")};

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

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

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

? ?System.out.println("添加了兩門課程："+temp5.id+":"+temp5.name+";"+temp6.id+":"+temp6.name);

}

public static void main(String[] args){

ListTest lt=new ListTest();

lt.testAdd();

}

}

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

導入包

能不能發一下ListTest的源碼。?；ハ鄬W習