Java等同於C＃擴展方法 - Java equivalent to C# extension methods

問題：

I am looking to implement a functionality in a list of object as I would in C# using an extension method.我希望在對象列表中實現功能，就像在C＃中使用擴展方法一樣。

Something like this:像這樣的東西：

List<DataObject> list;
// ... List initialization.
list.getData(id);

How do I do that in Java?我該如何在Java中做到這一點？

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解決方案：

參考一： https://en.stackoom.com/question/IIEF
參考二： https://stackoom.com/question/IIEF