{"blog_url":"https://tenshoku.mynavi.jp/engineer/guide/","title":"\u3010Java\u30b3\u30fc\u30c9\u5165\u9580\u3011\u6587\u5b57\u5217_\u2462isEmpty\u30e1\u30bd\u30c3\u30c9","height":"190","description":"\u6587\u5b57\u5217\u304c\u7a7a\u304b\u3069\u3046\u304b\u3092\u5224\u5b9a\u3059\u308b \u2013 isEmpty\u30e1\u30bd\u30c3\u30c9 public boolean isEmpty() isEmpty\u30e1\u30bd\u30c3\u30c9\u3092\u5229\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u6587\u5b57\u5217\u304c\u7a7a\u3067\u3042\u308b\u304b\u3069\u3046\u304b\u3092\u5224\u5b9a\u3067\u304d\u307e\u3059\u3002length\u30e1\u30bd\u30c3\u30c9\u304c0\u3067\u3042\u308b\u304b\u3069\u3046\u304b\u3067\u5224\u5b9a\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u304c\u3001\u7a7a\u3067\u3042\u308b\u304b\u3069\u3046\u304b\u306e\u5224\u5b9a\u3067\u3042\u308c\u3070\u3001\u307e\u305a\u306f\u3053\u3061\u3089\u3092\u5229\u7528\u3057\u305f\u65b9\u304c\u30b7\u30f3\u30d7\u30eb\u3067\u3057\u3087\u3046\u3002 StrEmpty.java package com.example.mynavi.string; public class StrEmpty { public static void main(String[] args) { var str = \"\"; if (st\u2026","provider_name":"Hatena Blog","published":"2026-06-30 16:21:18","width":"100%","image_url":null,"blog_title":"\u30a2\u30f3\u30c9\u30a8\u30f3\u30b8\u30cb\u30a2 - \u30a8\u30f3\u30b8\u30cb\u30a2\u306e\u3053\u3068\u3001\u30a8\u30f3\u30b8\u30cb\u30a2\u304b\u3089\u3002","author_name":"andengineer","provider_url":"https://hatena.blog","categories":["\u8a00\u8a9e\u30fb\u958b\u767a","\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9e","Java"],"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Ftenshoku.mynavi.jp%2Fengineer%2Fguide%2Farticles%2Fjava-code%2Fcategory_string%2F03\" title=\"\u3010Java\u30b3\u30fc\u30c9\u5165\u9580\u3011\u6587\u5b57\u5217_\u2462isEmpty\u30e1\u30bd\u30c3\u30c9 - \u30a2\u30f3\u30c9\u30a8\u30f3\u30b8\u30cb\u30a2 - \u30a8\u30f3\u30b8\u30cb\u30a2\u306e\u3053\u3068\u3001\u30a8\u30f3\u30b8\u30cb\u30a2\u304b\u3089\u3002\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","url":"https://tenshoku.mynavi.jp/engineer/guide/articles/java-code/category_string/03","type":"rich","author_url":"https://blog.hatena.ne.jp/andengineer/","version":"1.0"}