{"blog_title":"makotan\u306e\u30d6\u30ed\u30b0","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fmakotan.hatenadiary.jp%2Fentry%2F20150413%2Fp1\" title=\"Null Pointer Exception - makotan\u306e\u30d6\u30ed\u30b0\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","published":"2015-04-13 00:00:00","image_url":null,"version":"1.0","author_url":"https://blog.hatena.ne.jp/makotan/","author_name":"makotan","width":"100%","title":"Null Pointer Exception","description":"\u3061\u3087\u3063\u3068\u6c17\u306b\u306a\u3063\u305f\u30cd\u30bf\u304b\u3089\u30fb\u30fb\u30fb NullPointerException\u306e\u767a\u751f\u539f\u56e0\u306f\u5927\u62b5\u3001null\u304c\u5165\u3063\u305f\u5909\u6570\u306e\u5024\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u547c\u3073\u51fa\u3059\u4e8b\u3067\u767a\u751f \uff03\u4ed6\u306e\u3068\u3053\u308d\u3067\u767a\u751f\u3059\u308b(\u6697\u9ed9\u7684\u578b\u5909\u63db\u7cfb\u3068\u304b)\u4e8b\u306f\u3042\u308b\u3051\u3069\u30fb\u30fb\u30fb \u3067\u3001\u3075\u3068\u6c17\u306b\u306a\u3063\u305f\u4e8b\u306f obj.xxxx() \u3063\u3066\u5f62\u5f0f\u306e\u547c\u3073\u51fa\u3057\u3067obj\u304cnull\u306e\u6642\u306bNullPointerException\u304c\u767a\u751f\u3059\u308b\u3068\u8a00\u3044\u63db\u3048\u308c\u308b\u3002 \u3059\u306a\u308f\u3061\u3001xxxx(obj)\u306a\u3089xxxx\u304c\u6b63\u3057\u304f\u51e6\u7406\u51fa\u6765\u308c\u3070\u767a\u751f\u3057\u306a\u3044 \u3068\u3044\u3046\u3053\u3068\u306f\u3001NullPointerException\u3092\u56de\u907f\u3057\u305f\u3051\u308c\u3070\u624b\u7d9a\u304d\u7684\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u6307\u5411\u8a00\u8a9e\u3068\u305d\u306e\u7cfb\u8b5c\u3092\u6368\u3066\u308c\u3070\u624b\u3063\u53d6\u308a\u65e9\u3044\u3058\u3083\u306a\u3044\u304b\u3068\u3002 \u305d\u3093\u306a\u98a8\u306b\u3061\u3087\u3063\u2026","type":"rich","categories":[],"height":"190","provider_name":"Hatena Blog","url":"https://makotan.hatenadiary.jp/entry/20150413/p1","blog_url":"https://makotan.hatenadiary.jp/","provider_url":"https://hatena.blog"}