{"id":202988,"date":"2025-05-22T08:31:20","date_gmt":"2025-05-22T00:31:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/202988\/"},"modified":"2025-05-22T08:31:20","modified_gmt":"2025-05-22T00:31:20","slug":"%e5%a6%82%e4%bd%95%e8%87%aa%e5%ae%9a%e4%b9%89-java-%e5%87%bd%e6%95%b0%e4%b8%ad%e7%9a%84%e5%bc%82%e5%b8%b8%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/202988\/","title":{"rendered":"\u5982\u4f55\u81ea\u5b9a\u4e49 Java \u51fd\u6570\u4e2d\u7684\u5f02\u5e38\uff1f"},"content":{"rendered":"

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

\u5982\u4f55\u81ea\u5b9a\u4e49 Java \u51fd\u6570\u4e2d\u7684\u5f02\u5e38\uff1f<\/h1>\n

\u6587\u7ae0\u5c0f\u767d\u4e00\u679a\uff0c\u6b63\u5728\u4e0d\u65ad\u5b66\u4e60\u79ef\u7d2f\u77e5\u8bc6\uff0c\u73b0\u5c06\u5b66\u4e60\u5230\u7684\u77e5\u8bc6\u8bb0\u5f55\u4e00\u4e0b\uff0c\u4e5f\u662f\u5c06\u6211\u7684\u6240\u5f97\u5206\u4eab\u7ed9\u5927\u5bb6\uff01\u800c\u4eca\u5929\u8fd9\u7bc7\u6587\u7ae0\u300a\u5982\u4f55\u81ea\u5b9a\u4e49 Java \u51fd\u6570\u4e2d\u7684\u5f02\u5e38\uff1f\u300b\u5e26\u5927\u5bb6\u6765\u4e86\u89e3\u4e00\u4e0b##content_title##\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u7684\u77e5\u8bc6\u79ef\u7d2f\u6709\u6240\u5e2e\u52a9\uff0c\u4ece\u800c\u5f25\u8865\u81ea\u5df1\u7684\u4e0d\u8db3\uff0c\u52a9\u529b\u5b9e\u6218\u5f00\u53d1\uff01<\/p>\n

<\/p>\n

\u81ea\u5b9a\u4e49 Java \u51fd\u6570\u5f02\u5e38\u65b9\u5f0f\uff1a\u7ee7\u627f\u81ea Exception \u7c7b\u521b\u5efa\u81ea\u5b9a\u4e49\u5f02\u5e38\u7c7b\u3002\u5728\u6784\u9020\u51fd\u6570\u4e2d\u63d0\u4f9b\u9519\u8bef\u6d88\u606f\u3002\u4f7f\u7528 throw \u5173\u952e\u5b57\u629b\u51fa\u81ea\u5b9a\u4e49\u5f02\u5e38\u3002\u901a\u8fc7 try-catch \u5757\u5904\u7406\u81ea\u5b9a\u4e49\u5f02\u5e38\u3002\u81ea\u5b9a\u4e49\u5f02\u5e38\u53ef\u63d0\u4f9b\u66f4\u5177\u4f53\u7684\u9519\u8bef\u4fe1\u606f\uff0c\u63d0\u9ad8\u4ee3\u7801\u53ef\u8bfb\u6027\u548c\u53ef\u7ef4\u62a4\u6027\u3002<\/p>\n

<\/p>\n

\u5982\u4f55\u81ea\u5b9a\u4e49 Java \u51fd\u6570\u4e2d\u7684\u5f02\u5e38<\/strong><\/p>\n

\u81ea\u5b9a\u4e49\u5f02\u5e38\u5141\u8bb8\u60a8\u521b\u5efa\u9488\u5bf9\u7279\u5b9a\u9519\u8bef\u573a\u666f\u91cf\u8eab\u5b9a\u5236\u7684\u5f02\u5e38\u3002\u8fd9\u6837\u53ef\u4ee5\u63d0\u9ad8\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\u548c\u53ef\u7ef4\u62a4\u6027\uff0c\u56e0\u4e3a\u5b83\u53ef\u4ee5\u63d0\u4f9b\u66f4\u5177\u4f53\u7684\u9519\u8bef\u4fe1\u606f\uff0c\u4ece\u800c\u66f4\u5bb9\u6613\u8c03\u8bd5\u548c\u4fee\u590d\u95ee\u9898\u3002<\/p>\n

\u521b\u5efa\u81ea\u5b9a\u4e49\u5f02\u5e38\u7c7b<\/strong><\/p>\n

\u81ea\u5b9a\u4e49\u5f02\u5e38\u7c7b\u5fc5\u987b\u7ee7\u627f\u81ea Exception<\/code> \u7c7b\u6216\u5176\u5b50\u7c7b\u3002\u8981\u521b\u5efa\u4e00\u4e2a\u81ea\u5b9a\u4e49\u5f02\u5e38\u7c7b\uff0c\u8bf7\u4f7f\u7528 extends<\/code> \u5173\u952e\u5b57\uff1a<\/p>\n

public class MyClassException extends Exception {\n    \/\/ ...\n}<\/pre>\n
\u6784\u9020\u51fd\u6570\u548c\u6d88\u606f<\/strong><\/p>\n
\u81ea\u5b9a\u4e49\u5f02\u5e38\u7c7b\u5e94\u63d0\u4f9b\u4e00\u4e2a\u6784\u9020\u51fd\u6570\uff0c\u8be5\u6784\u9020\u51fd\u6570\u63a5\u53d7\u9519\u8bef\u6d88\u606f\u5b57\u7b26\u4e32\u3002\u60a8\u8fd8\u53ef\u4ee5\u5728\u6784\u9020\u51fd\u6570\u4e2d\u6dfb\u52a0\u5176\u4ed6\u4fe1\u606f\uff0c\u4f8b\u5982\u9519\u8bef\u4ee3\u7801\u6216\u53d1\u751f\u9519\u8bef\u7684\u6e90\uff1a<\/p>\n
public MyClassException(String message) {\n    super(message);\n}<\/pre>\n
\u629b\u51fa\u81ea\u5b9a\u4e49\u5f02\u5e38<\/strong><\/p>\n
\u5728\u51fd\u6570\u4e2d\u629b\u51fa\u81ea\u5b9a\u4e49\u5f02\u5e38\u7c7b\u4f3c\u4e8e\u629b\u51fa\u5185\u7f6e\u5f02\u5e38\u3002\u4f7f\u7528 throw<\/code> \u5173\u952e\u5b57\u548c\u60a8\u7684\u81ea\u5b9a\u4e49\u5f02\u5e38\u7c7b\uff1a<\/p>\n
if (condition) {\n    throw new MyClassException(\"\u9519\u8bef\u4fe1\u606f\");\n}<\/pre>\n
\u5904\u7406\u81ea\u5b9a\u4e49\u5f02\u5e38<\/strong><\/p>\n
\u60a8\u53ef\u4ee5\u4f7f\u7528 try-catch<\/code> \u5757\u6765\u5904\u7406\u81ea\u5b9a\u4e49\u5f02\u5e38\u548c\u5176\u4ed6\u7c7b\u578b\u7684\u5f02\u5e38\uff1a<\/p>\n
try {\n    \/\/ \u53ef\u80fd\u629b\u51fa\u81ea\u5b9a\u4e49\u5f02\u5e38\u7684\u4ee3\u7801\n} catch (MyClassException | Exception e) {\n    \/\/ \u5904\u7406\u5f02\u5e38\n}<\/pre>\n
\u5b9e\u6218\u6848\u4f8b<\/strong><\/p>\n
\u8003\u8651\u4ee5\u4e0b\u51fd\u6570\uff0c\u8be5\u51fd\u6570\u8ba1\u7b97\u4e24\u4e2a\u6570\u5b57\u7684\u9664\u6cd5\uff1a<\/p>\n
public int divide(int num1, int num2) {\n    if (num2 == 0) {\n        throw new MyClassException(\"\u5c1d\u8bd5\u9664\u4ee5\u96f6\");\n    }\n    return num1 \/ num2;\n}<\/pre>\n
\u5728\u8fd9\u4e2a\u51fd\u6570\u4e2d\uff0c\u6211\u4eec\u5b9a\u4e49\u4e86 MyClassException<\/code>\uff0c\u5f53\u5c1d\u8bd5\u9664\u4ee5\u96f6\u65f6\u629b\u51fa\u8be5\u5f02\u5e38\u3002\u8fd9\u63d0\u4f9b\u4e86\u6bd4\u5185\u7f6e ArithmeticException<\/code> \u66f4\u5177\u4f53\u7684\u9519\u8bef\u4fe1\u606f\uff0c\u4ece\u800c\u66f4\u5bb9\u6613\u8c03\u8bd5\u548c\u4fee\u590d\u95ee\u9898\u3002<\/p>\n
\u901a\u8fc7\u4f7f\u7528\u81ea\u5b9a\u4e49\u5f02\u5e38\uff0c\u60a8\u53ef\u4ee5\u521b\u5efa\u66f4\u6e05\u6670\u3001\u53ef\u7ef4\u62a4\u7684\u4ee3\u7801\uff0c\u5e76\u63d0\u9ad8\u5e94\u7528\u7a0b\u5e8f\u7684\u6574\u4f53\u9c81\u68d2\u6027\u3002<\/p>\n
\u4ee5\u4e0a\u5c31\u662f\u300a\u5982\u4f55\u81ea\u5b9a\u4e49 Java \u51fd\u6570\u4e2d\u7684\u5f02\u5e38\uff1f\u300b\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u5173\u4e8ejava,\u5f02\u5e38\u7684\u8d44\u6599\u8bf7\u5173\u6ce8\u516c\u4f17\u53f7\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5982\u4f55\u81ea\u5b9a\u4e49 Java \u51fd\u6570\u4e2d\u7684\u5f02...<\/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-202988","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202988","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=202988"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202988\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=202988"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=202988"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=202988"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}