{"author_url":"https://blog.hatena.ne.jp/nullppo/","height":"190","author_name":"nullppo","url":"https://nullppo.hateblo.jp/entry/2016/03/03/092644","width":"100%","image_url":null,"provider_name":"Hatena Blog","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fnullppo.hateblo.jp%2Fentry%2F2016%2F03%2F03%2F092644\" title=\"Java\u306e\u6570\u5024\u30c1\u30a7\u30c3\u30af\u306f\u4f55\u3067\u3084\u308b\u304b\u3002\u3002\u3002 - Nullppo\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","title":"Java\u306e\u6570\u5024\u30c1\u30a7\u30c3\u30af\u306f\u4f55\u3067\u3084\u308b\u304b\u3002\u3002\u3002","blog_url":"https://nullppo.hateblo.jp/","categories":[],"type":"rich","description":"Java\u3067\u6570\u5024\u30c1\u30a7\u30c3\u30af\u3068\u8a00\u3063\u3066\u3001 \u601d\u3044\u3064\u304f\u306e\u306f\u3002\u3002\u3002\u3002\u3002 org.apache.commons.lang.math.NumberUtils.isNumber(String str) org.apache.commons.lang.math.NumberUtils.isDigit(String str) org.apache.commons.lang.StringUtils.isNumeric(CharSequence cs) \u304b\u306a\u30fc\u3002\u3058\u3083\u3042\u3001 \u305d\u308c\u305e\u308c\u306e\u9055\u3044\u3063\u3066\u306a\u3093\u3060\u308d\uff1f \u3063\u3066\u3044\u3046\u521d\u5fc3\u8005\u30c1\u30c3\u30af\u306a\u7591\u554f\u306b\u3064\u3044\u3066\u8abf\u3079\u3066\u307f\u305f\u3002 1.NumberUtils.isNumber(String str) 2\u9032\u2026","blog_title":"Nullppo","provider_url":"https://hatena.blog","version":"1.0","published":"2016-03-03 09:26:44"}