{"title":"Java\u3067NullPointerException\u56de\u907f\u3059\u308b\u65b9\u6cd5\u3092\u307e\u3068\u3081\u308b","categories":["Java"],"height":"190","blog_title":"\u304d\u308a\u4e38\u306e\u6280\u8853\u65e5\u8a18","width":"100%","provider_name":"Hatena Blog","version":"1.0","published":"2021-04-15 12:00:00","image_url":"https://cdn-ak.f.st-hatena.com/images/fotolife/n/nainaistar/20210410/20210410153137.png","provider_url":"https://hatena.blog","description":"\u4eca\u65e5\u3082\u5c0f\u30cd\u30bf\u3002 NullPointerException\u3092\u56de\u907f\u3059\u308b\u306e\u306f\u7c21\u5358\u3060\u3051\u3069\u3001\u3082\u3046\u3061\u3087\u3063\u3068\u30b9\u30de\u30fc\u30c8\u306b\u66f8\u3051\u306a\u3044\uff1f \u3068\u3044\u3046\u3053\u3068\u3092\u7e8f\u3081\u308b\u8a18\u4e8b\u3002 \u4f59\u8ac7\u3067\u3059\u304c\u3001NullPointerException\u306f\u300c\u306c\u308b\u307d\u300d\u3068\u304b\u5927\u6587\u5b57\u53d6\u3063\u3066\u300cNPE\u300d\u3068\u304b\u547c\u3093\u3067\u307e\u3059\u3002\u4ee5\u5f8c\u3001\u300cNPE\u300d\u3067\u7d71\u4e00\u3057\u307e\u3059\u3002 \u74b0\u5883 Java 16 \u30c7\u30fc\u30bf\u69cb\u9020 \u6b21\u306e\u3088\u3046\u306a\u89aa\u5b50\u5b6b\u95a2\u4fc2\u3092\u6301\u3064\u3002 \u30ea\u30b9\u30c8\u3067\u306eNPE\u56de\u907f\u3082\u8868\u73fe\u3057\u305f\u3044\u306e\u3067\u3001\u30ea\u30b9\u30c8\u3082\u6301\u305f\u305b\u3066\u3044\u307e\u3059\u3002 Parent Child GrandChild \u4e00\u756a\u30b7\u30f3\u30d7\u30eb != null\u3067\u56de\u907f\u3059\u308b\u306e\u304c\u4e00\u756a\u7c21\u5358\u3067\u3059\u3002 null\u306f\u57fa\u672c\u578b\u306a\u306e\u3067IDE\u3067\u8272\u5206\u3051\u3055\u308c\u3066\u898b\u3084\u3059\u3044\u306e\u3067\u3001\u3088\u304f\u4f7f\u7528\u3057\u3066\u3044\u307e\u3059\u3002 Pare\u2026","blog_url":"https://nainaistar.hatenablog.com/","type":"rich","url":"https://nainaistar.hatenablog.com/entry/2021/04/15/120000","author_name":"nainaistar","author_url":"https://blog.hatena.ne.jp/nainaistar/","html":""}