package?com.imooc.collection;
import?java.util.ArrayList;
import?java.util.List;
public?class?TestGeneric?{
private?void?testForEach()?{
//?TODO?自動生成的方法存根
}
public??List<Course>?courses;
??????public?TestGeneric(){
???? ??this.courses=new?ArrayList<Course>();
???? ?
?????};
?????/*
??????*?測試添加
??????*/
?????public?void?testAdd(){
???? ?Course?cr1=new?Course("1","大學英語");
???? ?courses.add(cr1);
???? ?//泛型集合中不能添加泛型規定類型以外的對象；否則會報錯;
???? ?//courses.addAll("能否添加一些奇怪的數字呢");
???? ?Course?cr2=new?Course("2","java基礎");
???? ?courses.add(cr2);
?????}
???? ?//測試循環遍歷
???? ?public?void?testForEach1(){
???? for?(Course?cr:courses){
???? System.out.println(cr.id+":"+cr.name);
????
???? }
?????}
???? ?public?static?void?main(String[]?args)?{
????
???? TestGeneric?tg=new?TestGeneric();
???? tg.testAdd();
???? tg.testForEach();
???? //?TODO?自動生成的方法存根
???? /*
???? ?*?帶有泛型————Course,的List類型屬性;
???? ?*/
???? }
}
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