package?com_imooc_collection;
/*
*?備選課程類
*?*/
import?java.util.ArrayList;
import?java.util.Arrays;
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(){
????????//創建愛你一個課程對象，并通過調用add方法，添加到備選課程
????????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?cr3=?new?Course("3","test");
????????coursesToSelect.add(2,cr3);
????????Course?temp3=?(Course)coursesToSelect.get(0);
????????System.out.println("添加了課程"+temp3.id+":"+temp3.name);*/

????????Course[]?course?={new?Course("3","離散數學"),new?Course("4","匯編語言")};
????????coursesToSelect.addAll(Arrays.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,Arrays.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);
????????/*
????????*?取得list中的元素的方法
????????*?*/
????????public?void?HY(){???????????????????????//此處報錯，提示缺少分號
????????????int?size?=?coursesToSelect.size();
????????????System.out.println("有如下課程待選：");
????????????for?(int?i?=?0;?i?<?size;?i++)
????????????{
????????????????Course?cr?=?(Course)?coursesToSelect.get(i);
????????????????System.out.println("課程："?+?cr.id?+?":"?+?cr.name);
????????????}
????????}
????}
????public?static?void?main(String[]?arg)
????{
????????ListTest?lt=new?ListTest();
????????lt.testAdd();
//????????lt.testGet();
????}
}