如何转换列表< String>列出<对象>
我想将 List< String> 转换为 List< Object> 。
现有方法之一是返回 List< String> ，我想将它转换为 List< Object> 。
在Java中有直接的方法，然后迭代并按元素转换元素？
One of the existing methods is returning List<String> and I want to convert it to List<Object>.
Is there a direct way in Java other then iterating over and converting element by element?
传递 List< String> 作为新的 ArrayList< Object>的构造函数的参数。
Pass the List<String> as a parameter to the constructor of a new ArrayList<Object>.
List<Object> objectList = new ArrayList<Object>(stringList);
任何集合都可以作为参数传递只要它的类型扩展了 ArrayList 类型，就像 String $ c> extends 对象。构造函数使用 Collection ，但 List $ c>是 Collection $ c $的子接口所以你可以使用 List< String> 。
Any Collection can be passed as an argument to the constructor as long as its type extends the type of the ArrayList, as String extends Object. The constructor takes a Collection, but List is a subinterface of Collection, so you can just use the List<String>.