0
0

Delete article

Deleted articles cannot be recovered.

Draft of this article would be also deleted.

Are you sure you want to delete this article?

More than 3 years have passed since last update.

リストの先頭に空データを追加する

Posted at

今回、DBベースから取得したリストデータに空のデータを追加する方法がわからなくて、色々調べたのでメモとして残そうと思います。他にもっと簡単な方法があるかもしれないので、親切な方は教えてもらえるとうれしいです。

    // リストの先頭に空データを追加
	public static <T> List<T> addEmptyItem(List<T> list, Class<T> clazz) throws Exception {
		list.add(0, clazz.getDeclaredConstructor().newInstance());
		return list;
	}
0
0
0

Register as a new user and use Qiita more conveniently

  1. You get articles that match your needs
  2. You can efficiently read back useful information
  3. You can use dark theme
What you can do with signing up
0
0

Delete article

Deleted articles cannot be recovered.

Draft of this article would be also deleted.

Are you sure you want to delete this article?