{"id":202818,"date":"2025-05-22T08:09:02","date_gmt":"2025-05-22T00:09:02","guid":{"rendered":"https:\/\/server.hk\/cnblog\/202818\/"},"modified":"2025-05-22T08:09:02","modified_gmt":"2025-05-22T00:09:02","slug":"%e5%a6%82%e4%bd%95%e5%9c%a8-java-%e4%b8%ad%e6%8a%9b%e5%87%ba%e5%bc%82%e5%b8%b8%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/202818\/","title":{"rendered":"\u5982\u4f55\u5728 Java \u4e2d\u629b\u51fa\u5f02\u5e38\uff1f"},"content":{"rendered":"

<\/b> <\/p>\n

\u5982\u4f55\u5728 Java \u4e2d\u629b\u51fa\u5f02\u5e38\uff1f<\/h1>\n

\u5b66\u4e60\u6587\u7ae0<\/span>\u8981\u52aa\u529b\uff0c\u4f46\u662f\u4e0d\u8981\u6025\uff01\u4eca\u5929\u7684\u8fd9\u7bc7\u6587\u7ae0\u300a\u5982\u4f55\u5728 Java \u4e2d\u629b\u51fa\u5f02\u5e38\uff1f\u300b<\/span>\u5c06\u4f1a\u4ecb\u7ecd\u5230<\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5982\u679c\u4f60\u60f3\u6df1\u5165\u5b66\u4e60\u6587\u7ae0<\/span>\uff0c\u53ef\u4ee5\u5173\u6ce8\u6211\uff01\u6211\u4f1a\u6301\u7eed\u66f4\u65b0\u76f8\u5173\u6587\u7ae0\u7684\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u90fd\u80fd\u6709\u6240\u5e2e\u52a9\uff01<\/p>\n

\u53ef\u4ee5\u901a\u8fc7 throw \u8bed\u53e5\u629b\u51fa\u5f02\u5e38\uff0c\u683c\u5f0f\u4e3a\uff1athrow new \u5f02\u5e38\u7c7b\u540d()\u3002\u5b9e\u6218\u6848\u4f8b\u4e2d\u6f14\u793a\u4e86\u5982\u4f55\u629b\u51fa ArithmeticException \u5f02\u5e38\u3002\u81ea\u5b9a\u4e49\u5f02\u5e38\u7c7b\u53ef\u901a\u8fc7\u6269\u5c55 Exception \u7c7b\u5b9e\u73b0\uff0c\u7528\u4e8e\u63cf\u8ff0\u66f4\u5177\u4f53\u7684\u9519\u8bef\u3002<\/p>\n

<\/p>\n

\u5982\u4f55\u5728 Java \u4e2d\u629b\u51fa\u5f02\u5e38<\/strong><\/p>\n

\u5f02\u5e38\u5904\u7406<\/strong>\u662f Java \u4e2d\u4e00\u9879\u57fa\u672c\u7684\u529f\u80fd\uff0c\u5b83\u5141\u8bb8\u7a0b\u5e8f\u5728\u53d1\u751f\u9519\u8bef\u6216\u5f02\u5e38\u60c5\u51b5\u65f6\u63d0\u4f9b\u4f18\u96c5\u4e14\u53ef\u63a7\u7684\u5904\u7406\u3002\u629b\u51fa\u5f02\u5e38\u662f\u5411\u8c03\u7528\u65b9\u62a5\u544a\u9519\u8bef\u7684\u4e00\u79cd\u65b9\u5f0f\u3002<\/p>\n

\u8bed\u6cd5<\/strong><\/p>\n

\u8981\u629b\u51fa\u5f02\u5e38\uff0c\u53ef\u4ee5\u4f7f\u7528 throw<\/code> \u8bed\u53e5\uff0c\u540e\u8ddf\u5f02\u5e38\u7c7b\u7684\u5b9e\u4f8b\uff1a<\/p>\n

throw new Exception();<\/pre>\n
\u5b9e\u6218\u6848\u4f8b<\/strong><\/p>\n
\u5047\u8bbe\u6211\u4eec\u6709\u4e00\u4e2a\u65b9\u6cd5\u6765\u8ba1\u7b97\u4e24\u4e2a\u6570\u5b57\u7684\u9664\u6cd5\uff1a<\/p>\n
public static int divide(int a, int b) {\n    \/\/ \u5982\u679c b \u4e3a 0\uff0c\u629b\u51fa\u5f02\u5e38\n    if (b == 0) {\n        throw new ArithmeticException(\"\u9664\u6570\u4e0d\u80fd\u4e3a 0\");\n    }\n    return a \/ b;\n}<\/pre>\n
\u8c03\u7528<\/strong><\/p>\n
\u5f53\u8c03\u7528 divide<\/code> \u65b9\u6cd5\u65f6\uff0c\u5982\u679c b<\/code> \u4e3a 0\uff0c\u5b83\u4f1a\u629b\u51fa ArithmeticException<\/code> \u5f02\u5e38\uff1a<\/p>\n
int result = 0;\ntry {\n    result = divide(10, 0);\n} catch (ArithmeticException e) {\n    System.out.println(\"\u9664\u6570\u4e0d\u80fd\u4e3a 0\");\n}<\/pre>\n
\u8f93\u51fa\uff1a<\/p>\n
\u9664\u6570\u4e0d\u80fd\u4e3a 0<\/pre>\n
\u81ea\u5b9a\u4e49\u5f02\u5e38\u7c7b<\/strong><\/p>\n
\u6709\u65f6\uff0c\u6211\u4eec\u9700\u8981\u521b\u5efa\u81ea\u5b9a\u4e49\u5f02\u5e38\u7c7b\u6765\u63cf\u8ff0\u66f4\u5177\u4f53\u7684\u9519\u8bef\u3002\u53ef\u4ee5\u901a\u8fc7\u6269\u5c55 Exception<\/code> \u7c7b\u6765\u5b9e\u73b0\uff1a<\/p>\n
public class MyCustomException extends Exception {\n    public MyCustomException(String message) {\n        super(message);\n    }\n}<\/pre>\n
\u7136\u540e\uff0c\u53ef\u4ee5\u5728\u4ee3\u7801\u4e2d\u4f7f\u7528\u5b83\uff1a<\/p>\n
throw new MyCustomException(\"\u81ea\u5b9a\u4e49\u9519\u8bef\u6d88\u606f\");<\/pre>\n
\u4eca\u5929\u5e26\u5927\u5bb6\u4e86\u89e3\u4e86\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u5e0c\u671b\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\uff1b\u5173\u4e8e\u6587\u7ae0\u7684\u6280\u672f\u77e5\u8bc6\u6211\u4eec\u4f1a\u4e00\u70b9\u70b9\u6df1\u5165\u4ecb\u7ecd\uff0c\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8\u516c\u4f17\u53f7\uff0c\u4e00\u8d77\u5b66\u4e60\u7f16\u7a0b~<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5982\u4f55\u5728 Java \u4e2d\u629b\u51fa\u5f02\u5e38\uff1f ...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-202818","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202818","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=202818"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202818\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=202818"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=202818"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=202818"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}