Iterator it = c.iterator();while(it.hasNext()){ ? ?Student stu = (Student) it.next(); ? ?System.out.println(stu);}或Iterator it = c.iterator();while(it.hasNext()){? ?Object obj =it.next();? ?System.out.println(obj);}
今天我在看結合迭代器Iterator的時候,為什么next()方法用確定的對象接收和直接用object接收有什么區別
Mr_CuriosityOH
2017-03-16 15:00:18
