{"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fblog1.mammb.com%2Fentry%2F20091228%2F1262278137\" title=\"Observer \u30d1\u30bf\u30fc\u30f3 - A Memorandum\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","title":"Observer \u30d1\u30bf\u30fc\u30f3","author_url":"https://blog.hatena.ne.jp/Naotsugu/","width":"100%","url":"https://blog1.mammb.com/entry/20091228/1262278137","image_url":null,"categories":["Java"],"description":"Observer \u30d1\u30bf\u30fc\u30f3\u3068\u306f \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u9593\u306e1\u5bfe\u591a\u306e\u4f9d\u5b58\u95a2\u4fc2\u3092\u5b9a\u7fa9\u3057\u3001\u3042\u308b\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u72b6\u614b\u304c\u5909\u5316\u3059\u308b\u3068\u3001\u305d\u308c\u306b\u4f9d\u5b58\u3057\u3066\u3044\u308b\u5168\u3066\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304c\u81ea\u52d5\u7684\u306b\u72b6\u614b\u306e\u5909\u66f4\u306e\u901a\u77e5\u3092\u53d7\u3051\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002 Observer\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3068\u5177\u8c61\u30af\u30e9\u30b9 public interface Observer { void notifyUpdate(); } public class ConcreteObserver1 implements Observer { @Override public void notifyUpdate() { System.out.println(\"ConcreteObserver\u2026","height":"190","type":"rich","author_name":"Naotsugu","provider_url":"https://hatena.blog","version":"1.0","blog_url":"https://blog1.mammb.com/","published":"2009-12-28 01:48:57","blog_title":"A Memorandum","provider_name":"Hatena Blog"}