java - 摆脱 Collections.unmodifyingList() 产生的警告

Question

以下代码会产生此警告:

警告:

 Type safety: The expression of type List needs unchecked conversion to conform to List<TableModel>

代码:

List<TableModel> tableModels = new ArrayList<TableModel>();
List<TableModel> list = Collections.unmodifiableList(tableModels);

方法签名是:

public static <T> List<T> unmodifiableList(List<? extends T> list)

我错过了什么？

Answer 1

您可能正在寻找:

List<TableModel> list = Collections.<TableModel>unmodifiableList(tableModels);