.Arraylist源碼中g(shù)et方法返回值還是有泛型

?public?E?get(int?index)?{
?RangeCheck(index);
?return?(E)?elementData[index];
????}

?

還是要通過(guò)反射取值

Method?m2=clazz.getDeclaredMethod("get",?int.class);

????

????for(int?i=0;i<list.size();i++){

?????Object?o=m2.invoke(list,?i);

?????if(o?instanceof?String){

??????System.out.println("String:"+m2.invoke(list,?i));

?????}else?if(o?instanceof?Integer){

??????System.out.println("Integer:"+m2.invoke(list,?i));

?????}

????}

?

ArrayList<String> ?這樣的泛型加了int的進(jìn)去 ?輸出來(lái)報(bào)錯(cuò) ?輸出String沒(méi)問(wèn)題

就是用下標(biāo)輸出單個(gè)都會(huì)拋異常

可以用for循環(huán)