{"categories":["Java"],"author_url":"https://blog.hatena.ne.jp/daisuke-m/","description":"\u306a\u30fc\u30fc\u3093\u304b\u3001\u306a\u3093\u3068\u306a\u304f\u601d\u3044\u51fa\u3057\u3066\u5f15\u3063\u5f35\u3063\u3066\u304d\u305f\u30a8\u30f3\u30c8\u30ea\u3002\u300cMap\u306a\u3093\u3060\u3051\u3069\u3001get\u3057\u305f\u6642\u306b\u7d76\u5bfenull\u304c\u8fd4\u3063\u3066\u304d\u3066\u6b32\u3057\u304f\u306a\u3044\u3093\u3060\u3088\u306d\u30fc\u3002\u300d\u3068\u3044\u3046\u5b9f\u88c5\u304c\u6b32\u3057\u304f\u306a\u3063\u305f\u6642\u306e\u304a\u8a71\u3002 Map<String, String> foo = new HashMap<String, String>() { @Override public String get(String key) { String result = super.get(key); return result == null ? \"\" : result; } }; Bar.baz(foo); \u30b8\u30a7\u30cd\u30ea\u30af\u30b9\u4f7f\u3063\u305f\u30e1\u30bd\u30c3\u30c9\u306e\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9 - \u90fd\u2026","type":"rich","title":"\u4ed5\u69d8\u9055\u53cd\u5b9f\u88c5\u3092\u3057\u306a\u3044\u69d8\u306b","provider_url":"https://hatena.blog","width":"100%","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fdaisuke-m.hatenablog.com%2Fentry%2F20080710%2F1215708136\" title=\"\u4ed5\u69d8\u9055\u53cd\u5b9f\u88c5\u3092\u3057\u306a\u3044\u69d8\u306b - \u90fd\u5143\u30c0\u30a4\u30b9\u30b1 IT-PRESS\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","blog_title":"\u90fd\u5143\u30c0\u30a4\u30b9\u30b1 IT-PRESS","height":"190","author_name":"daisuke-m","provider_name":"Hatena Blog","image_url":null,"version":"1.0","blog_url":"https://daisuke-m.hatenablog.com/","url":"https://daisuke-m.hatenablog.com/entry/20080710/1215708136","published":"2008-07-10 01:42:16"}