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Javaで「文字列の文字の数(コードポイントの数)を取得する(String.codePointCount)」の動作を確認してみた

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概要

Javaで「文字列の文字の数(コードポイントの数)を取得する(String.codePointCount)」の動作を確認してみました。
以下のページを参考にしました。

実装

以下のファイルを作成しました。

JSample9_1.java
class JSample9_1{
  public static void main(String[] args){
    String msg1 = "東京都港区赤坂";
    String msg2 = "𪛊あ";

    System.out.println(msg1.codePointCount(0, msg1.length()));
    System.out.println(msg2.codePointCount(0, msg2.length()));
  }
}

以下のコマンドを実行しました。

$ javac JSample9_1.java 
$ java JSample9_1 
7
2

まとめ

何かの役に立てばと。

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