import java.util.Map; import java.util.HashMap; class InitializeMapSample { public static void main(String[] args) { Map<String, String> map = new HashMap<String, String>() { {put("foo", "fooVal");} {put("bar", "barVal");} }; System.out.println(map.get("foo")); System.out.println(map.get("bar")); } } このコードよくわからなかったのだけど、 http://www.coderanch.com/t/386333/java/java/HashMap-Construction-initial-value
![Map 初期化 - Qiita](https://cdn-ak-scissors.b.st-hatena.com/image/square/6dcb061cfec6030dd9215d25f154e4c612bea5ce/height=288;version=1;width=512/https%3A%2F%2Fqiita-user-contents.imgix.net%2Fhttps%253A%252F%252Fcdn.qiita.com%252Fassets%252Fpublic%252Farticle-ogp-background-9f5428127621718a910c8b63951390ad.png%3Fixlib%3Drb-4.0.0%26w%3D1200%26mark64%3DaHR0cHM6Ly9xaWl0YS11c2VyLWNvbnRlbnRzLmltZ2l4Lm5ldC9-dGV4dD9peGxpYj1yYi00LjAuMCZ3PTkxNiZoPTMzNiZ0eHQ9TWFwJTIwJUU1JTg4JTlEJUU2JTlDJTlGJUU1JThDJTk2JnR4dC1jb2xvcj0lMjMyMTIxMjEmdHh0LWZvbnQ9SGlyYWdpbm8lMjBTYW5zJTIwVzYmdHh0LXNpemU9NTYmdHh0LWNsaXA9ZWxsaXBzaXMmdHh0LWFsaWduPWxlZnQlMkN0b3Amcz05MmU5OTA3ODkxNTdlNWI3NmFlZTE3YTVmMTA0ZWVlYg%26mark-x%3D142%26mark-y%3D112%26blend64%3DaHR0cHM6Ly9xaWl0YS11c2VyLWNvbnRlbnRzLmltZ2l4Lm5ldC9-dGV4dD9peGxpYj1yYi00LjAuMCZ3PTYxNiZ0eHQ9JTQwbWFyY2llMDAxJnR4dC1jb2xvcj0lMjMyMTIxMjEmdHh0LWZvbnQ9SGlyYWdpbm8lMjBTYW5zJTIwVzYmdHh0LXNpemU9MzYmdHh0LWFsaWduPWxlZnQlMkN0b3Amcz05YWU1YzRiMDYwNWE5NDU2MDNiYTUwYTNiYjVjZTM5Mw%26blend-x%3D142%26blend-y%3D491%26blend-mode%3Dnormal%26s%3Daba9911ac7e99d7f91668f3e0081715a)