findnerd.com

Convert ArrayList object to comma separated string

ArrayList is an heterogeneous collection of objects where each object can be indexed individually. While writing an application there could be some scenarios where we have ArrayList object filled with ...
GitHub

ArrayList of String array

jArrayList = autoclass('java.util.ArrayList') jString = autoclass('java.lang.String') words = ['a', 'b', 'c'] javaWords = [jString(w) for w in words] arraylist ...
InfoWorld

Polymorphism and inheritance in Java

We will focus on the relationship between polymorphism and Java inheritance. The main thing to keep in mind is that polymorphism requires an inheritance or an interface implementation. You can see ...
技術評論社

第29回 Javaオブジェクトと JSONオブジェクトの 変換に 便利な 「Google ...

前回は2回にわたってJavaプログラムでJSONデータを扱うための 「Jackson Java JSON-processor」 を紹介しました。今回はJSONデータを扱うもう1つのJavaライブラリ 「Google Gson」 を紹介します。Gsonの特徴は、 JavaオブジェクトとJSONオブジェクトの変換を、 シンプルな ...