{"description":"Java\u306e\u7d4c\u9a13\u306f\u3042\u3063\u305f\u304c\u30011.3\u306e\u3053\u308d\u3060\u3063\u305f\u306e\u3067\u30011.5\u3067\u306f\u57fa\u672c\u7684\u306a\u6587\u6cd5\u3082\u82e5\u5e72\u5909\u308f\u3063\u3066\u3044\u305f\u3002 Autoboxing \u4f55\u304b\u7981\u65ad\u306e\u79d8\u6280\u307f\u305f\u3044\u306a\u611f\u3058\u304c\u3059\u308b\u304c\u3001\u52dd\u624b\u306b\u3084\u3063\u3066\u304f\u308c\u308b\u306e\u306f\u78ba\u304b\u306b\u4fbf\u5229\u3002\u6163\u308c\u308b\u3068\u3064\u3044\u3064\u3044\u4f7f\u3063\u3066\u3057\u307e\u3046\u3002 \u3057\u304b\u3057\u3001NullPointerException\u304c\u51fa\u3066\u3082\u4e00\u77ac\u306a\u3093\u306e\u3053\u3068\u304b\u5206\u304b\u3089\u306a\u3044\u3053\u3068\u304c\u3042\u308b\u3002 int i = xxxx.getX();\u5b9f\u969b\u306b\u306fgetX()\u304cInteger\u3060\u3063\u305f\u308a\u3059\u308b\u5834\u5408\u3002 printf \u6b63\u78ba\u306b\u306f\u3001System.out.prinft()\u3068\u304b\u3001String.format()\u3068\u304b\u3002 \u3061\u3087\u3063\u3068C\u306eprintf\u3068\u306f\u9055\u3046\u3068\u3053\u308d\u3082\u3042\u308b\u3002\u4ee5\u524d\u306fMessageFormat\u306a\u3093\u304b\u2026","author_url":"https://blog.hatena.ne.jp/drambuie/","version":"1.0","blog_url":"https://drambuie.hatenadiary.org/","blog_title":"drambuie\u306e\u65e5\u8a18","width":"100%","image_url":null,"published":"2008-07-15 00:00:01","provider_url":"https://hatena.blog","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fdrambuie.hatenadiary.org%2Fentry%2F20080715%2Fp2\" title=\"Java 5 \u306e\u7d30\u304b\u3044\u3068\u3053\u308d  - drambuie\u306e\u65e5\u8a18\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","provider_name":"Hatena Blog","categories":[],"type":"rich","title":"Java 5 \u306e\u7d30\u304b\u3044\u3068\u3053\u308d ","author_name":"drambuie","height":"190","url":"https://drambuie.hatenadiary.org/entry/20080715/p2"}