{"id":690,"date":"2021-02-09T11:26:15","date_gmt":"2021-02-09T03:26:15","guid":{"rendered":"https:\/\/www.52dixiaowo.com\/java\/?p=690"},"modified":"2021-02-09T11:26:16","modified_gmt":"2021-02-09T03:26:16","slug":"throw%e5%85%b3%e9%94%ae%e5%ad%97-%e5%88%9b%e5%bb%ba%e5%bc%82%e5%b8%b8%e5%af%b9%e8%b1%a1","status":"publish","type":"post","link":"https:\/\/www.52dixiaowo.com\/java\/post-690.html","title":{"rendered":"throw\u5173\u952e\u5b57 &#8212; \u521b\u5efa\u5f02\u5e38\u5bf9\u8c61"},"content":{"rendered":"\n<p>\u5f53\u65b9\u6cd5\u4f20\u9012\u7684\u53c2\u6570\uff0c\u53ef\u80fd\u4f1a\u4ea7\u751f\u5f02\u5e38\u65f6\uff0c\u53ef\u4ee5\u5bf9\u8be5\u53c2\u6570\u8fdb\u884c\u6821\u9a8c<\/p>\n\n\n\n<p>\u82e5\u53c2\u6570\u4e0d\u5408\u6cd5\uff0c\u53ef\u4ee5\u521b\u5efa\u5f02\u5e38\u5bf9\u8c61\uff0c\u544a\u79cd\u8c03\u7528\u8005\u53c2\u6570\u6709\u95ee\u9898<\/p>\n\n\n\n<h5>1.throw\u5173\u952e\u5b57\u8bed\u6cd5<\/h5>\n\n\n\n<pre class=\"wp-block-code\"><code>throw new xxxException(\"\u5f02\u5e38\u4ea7\u751f\u7684\u539f\u56e0\");<\/code><\/pre>\n\n\n\n<ul><li>throw \u5fc5\u987b\u5199\u5728\u65b9\u6cd5\u4f53\u5185<\/li><li>throw new \u540e\u9762\u7684\u5bf9\u8c61\u5fc5\u987b\u662f Exception \u6216\u5b83\u7684\u5b50\u7c7b<\/li><li>( \u5982\u679c\u662f RuntimeException \u53ef\u4ee5\u4e0d\u624b\u52a8\u5904\u7406\uff0cJVM \u4e5f\u4f1a\u5904\u7406)<\/li><li>(\u5bf9\u4e8e\u5176\u4ed6\u7684 Exception \u5b50\u7c7b\uff0c\u90fd\u662f\u7f16\u8bd1\u671f\u5f02\u5e38\uff0c\u5fc5\u987b\u624b\u52a8\u5904\u7406)<\/li><\/ul>\n\n\n\n<h5>2.\u4f8b\u5b50<\/h5>\n\n\n\n<p>\u521b\u5efa\u4e00\u4e2a\u7a7a\u6307\u9488\u7684\u6570\u7ec4\u540d\uff0c\u8c03\u7528\u65b9\u6cd5\uff0c\u5e76\u5728\u65b9\u6cd5\u4e2d\u68c0\u6d4b\u6570\u7ec4\u662f\u5426\u4e3a null<\/p>\n\n\n\n<p>\u5982\u679c\u6570\u7ec4\u4e3a Null \uff0c\u90a3\u4e48\u629b\u51fa\u4e00\u4e2a NullPointerException<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public static void main(String&#91;] args) {\r\n    int&#91;] a = null;\r\n    throwException(a);\r\n}\r\n\r\nprivate static void throwException(int&#91;] a) {\r\n\tif(a==null) {\r\n\t\tthrow new NullPointerException(\"\u6570\u7ec4\u4e3a null\");\r\n\t}\r\n}<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u5f53\u65b9\u6cd5\u4f20\u9012\u7684\u53c2\u6570\uff0c\u53ef\u80fd\u4f1a\u4ea7\u751f\u5f02\u5e38\u65f6\uff0c\u53ef\u4ee5\u5bf9\u8be5\u53c2\u6570\u8fdb\u884c\u6821\u9a8c \u82e5\u53c2\u6570\u4e0d\u5408\u6cd5\uff0c\u53ef\u4ee5\u521b\u5efa\u5f02\u5e38\u5bf9\u8c61\uff0c\u544a\u79cd\u8c03\u7528\u8005\u53c2\u6570\u6709\u95ee\u9898&hellip; <a href=\"https:\/\/www.52dixiaowo.com\/java\/post-690.html\" class=\"more-link\">\u7ee7\u7eed\u9605\u8bfb <span class=\"screen-reader-text\">throw\u5173\u952e\u5b57 &#8212; \u521b\u5efa\u5f02\u5e38\u5bf9\u8c61<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[24],"tags":[],"_links":{"self":[{"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/posts\/690"}],"collection":[{"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/comments?post=690"}],"version-history":[{"count":0,"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/posts\/690\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/media?parent=690"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/categories?post=690"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/tags?post=690"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}