Warning: include_once(): http:// wrapper is disabled in the server configuration by allow_url_include=0 in /home/users/2/moriya-h5/web/confrage/java/array/array_list/array_list.html on line 2

Warning: include_once(http://www.confrage.com/bin/header.php): failed to open stream: no suitable wrapper could be found in /home/users/2/moriya-h5/web/confrage/java/array/array_list/array_list.html on line 2

Warning: include_once(): Failed opening 'http://www.confrage.com/bin/header.php' for inclusion (include_path='.:/usr/local/php/5.6/lib/php') in /home/users/2/moriya-h5/web/confrage/java/array/array_list/array_list.html on line 2
Javaの動的配列 | Java | 株式会社CONFRAGE
Warning: include_once(/home/sites/heteml/users/m/o/r/moriya-h5/web/confrage/bin/menu.php): failed to open stream: No such file or directory in /home/users/2/moriya-h5/web/confrage/java/array/array_list/array_list.html on line 17

Warning: include_once(): Failed opening '/home/sites/heteml/users/m/o/r/moriya-h5/web/confrage/bin/menu.php' for inclusion (include_path='.:/usr/local/php/5.6/lib/php') in /home/users/2/moriya-h5/web/confrage/java/array/array_list/array_list.html on line 17
Javaの動的配列
Javaの配列は要素数指定する必要があるため、実際には動的配列はありません。ですが、Listを使用してObject[]配列の動的配列を作成することは可能です。
toArrayメソッドを使用して動的配列を実現します。

import java.util.ArrayList;
import java.util.List;

public class test{
    public static void main(String[] args){
        List<Object> list = new ArrayList<Object<();
        
        list.add(1);
        list.add(2);
        ・
        ・
        ・
        Object[] obj = list.toArray();
    }
}
というように最後にtoArrayメソッドを使用して最終的にリストからObject型の配列に戻すことによって動的配列を生成することが可能です。

Back to top

Information

Warning: include_once(/home/sites/heteml/users/m/o/r/moriya-h5/web/confrage/bin/side_bar.php): failed to open stream: No such file or directory in /home/users/2/moriya-h5/web/confrage/java/array/array_list/array_list.html on line 74

Warning: include_once(): Failed opening '/home/sites/heteml/users/m/o/r/moriya-h5/web/confrage/bin/side_bar.php' for inclusion (include_path='.:/usr/local/php/5.6/lib/php') in /home/users/2/moriya-h5/web/confrage/java/array/array_list/array_list.html on line 74

Warning: include_once(/home/sites/heteml/users/m/o/r/moriya-h5/web/confrage/bin/seo.php): failed to open stream: No such file or directory in /home/users/2/moriya-h5/web/confrage/java/array/array_list/array_list.html on line 83

Warning: include_once(): Failed opening '/home/sites/heteml/users/m/o/r/moriya-h5/web/confrage/bin/seo.php' for inclusion (include_path='.:/usr/local/php/5.6/lib/php') in /home/users/2/moriya-h5/web/confrage/java/array/array_list/array_list.html on line 83