{"id":202674,"date":"2025-05-22T10:49:00","date_gmt":"2025-05-22T02:49:00","guid":{"rendered":"https:\/\/server.hk\/cnblog\/202674\/"},"modified":"2025-05-22T10:49:00","modified_gmt":"2025-05-22T02:49:00","slug":"%e5%9c%a8-java-%e4%b8%ad%e5%a6%82%e4%bd%95%e9%80%9a%e8%bf%87%e8%87%aa%e5%ae%9a%e4%b9%89%e5%bc%82%e5%b8%b8%e7%b1%bb%e6%8f%90%e5%8d%87%e4%bb%a3%e7%a0%81%e5%8f%af%e8%af%bb%e6%80%a7%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/202674\/","title":{"rendered":"\u5728 Java \u4e2d\u5982\u4f55\u901a\u8fc7\u81ea\u5b9a\u4e49\u5f02\u5e38\u7c7b\u63d0\u5347\u4ee3\u7801\u53ef\u8bfb\u6027\uff1f"},"content":{"rendered":"

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

\u5728 Java \u4e2d\u5982\u4f55\u901a\u8fc7\u81ea\u5b9a\u4e49\u5f02\u5e38\u7c7b\u63d0\u5347\u4ee3\u7801\u53ef\u8bfb\u6027\uff1f<\/h1>\n

\u54c8\u55bd\uff01\u4eca\u5929\u5fc3\u8840\u6765\u6f6e\u7ed9\u5927\u5bb6\u5e26\u6765\u4e86\u300a\u5728 Java \u4e2d\u5982\u4f55\u901a\u8fc7\u81ea\u5b9a\u4e49\u5f02\u5e38\u7c7b\u63d0\u5347\u4ee3\u7801\u53ef\u8bfb\u6027\uff1f\u300b<\/span>\uff0c\u60f3\u5fc5\u5927\u5bb6\u5e94\u8be5\u5bf9\u6587\u7ae0<\/span>\u90fd\u4e0d\u964c\u751f\u5427\uff0c\u90a3\u4e48\u9605\u8bfb\u672c\u6587\u5c31\u90fd\u4e0d\u4f1a\u5f88\u56f0\u96be\uff0c\u4ee5\u4e0b\u5185\u5bb9\u4e3b\u8981\u6d89\u53ca\u5230<\/span>\uff0c\u82e5\u662f\u4f60\u6b63\u5728\u5b66\u4e60\u6587\u7ae0<\/span>\uff0c\u5343\u4e07\u522b\u9519\u8fc7\u8fd9\u7bc7\u6587\u7ae0~\u5e0c\u671b\u80fd\u5e2e\u52a9\u5230\u4f60\uff01<\/p>\n

\u662f\uff0c\u901a\u8fc7\u521b\u5efa\u81ea\u5b9a\u4e49\u5f02\u5e38\u7c7b\u53ef\u4ee5\u63d0\u5347 Java \u4ee3\u7801\u53ef\u8bfb\u6027\uff0c\u5177\u4f53\u6b65\u9aa4\u5305\u62ec\uff1a\u6269\u5c55 Exception \u6216 RuntimeException \u7c7b\u521b\u5efa\u81ea\u5b9a\u4e49\u5f02\u5e38\u7c7b\u3002\u5728\u65b9\u6cd5\u4ee3\u7801\u4e2d\u629b\u51fa\u548c\u6355\u83b7\u81ea\u5b9a\u4e49\u5f02\u5e38\u3002\u4f7f\u7528\u81ea\u5b9a\u4e49\u5f02\u5e38\u7c7b\u5904\u7406\u7279\u5b9a\u9519\u8bef\u6761\u4ef6\uff0c\u4f7f\u4ee3\u7801\u66f4\u52a0\u6e05\u6670\u548c\u6613\u7ef4\u62a4\u3002<\/p>\n

<\/p>\n

\u5728 Java \u4e2d\u901a\u8fc7\u81ea\u5b9a\u4e49\u5f02\u5e38\u7c7b\u63d0\u5347\u4ee3\u7801\u53ef\u8bfb\u6027<\/strong><\/p>\n

\u81ea\u5b9a\u4e49\u5f02\u5e38\u7c7b\u662f\u589e\u5f3a Java \u4ee3\u7801\u53ef\u8bfb\u6027\u7684\u4e00\u79cd\u6709\u6548\u65b9\u5f0f\u3002\u5b83\u901a\u8fc7\u521b\u5efa\u7279\u5b9a\u7684\u5f02\u5e38\u7c7b\u578b\u6765\u8868\u793a\u5e94\u7528\u7a0b\u5e8f\u4e2d\u7684\u7279\u5b9a\u9519\u8bef\u6761\u4ef6\uff0c\u4ece\u800c\u63d0\u9ad8\u4ee3\u7801\u7684\u6e05\u6670\u5ea6\u548c\u7ef4\u62a4\u6027\u3002<\/p>\n

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

\u8981\u521b\u5efa\u81ea\u5b9a\u4e49\u5f02\u5e38\u7c7b\uff0c\u60a8\u9700\u8981\u6269\u5c55 Exception<\/code> \u6216 RuntimeException<\/code> \u7c7b\u3002\u901a\u5e38\u5efa\u8bae\u4f7f\u7528 RuntimeException<\/code>\uff0c\u56e0\u4e3a\u4e0d\u9700\u8981\u5728\u65b9\u6cd5\u7b7e\u540d\u4e2d\u8fdb\u884c\u663e\u5f0f\u58f0\u660e\u3002<\/p>\n

public class MyCustomException extends RuntimeException {\n\n    public MyCustomException(String message) {\n        super(message);\n    }\n}<\/pre>\n
\u4f7f\u7528\u81ea\u5b9a\u4e49\u5f02\u5e38<\/strong><\/p>\n
\u8981\u4f7f\u7528\u81ea\u5b9a\u4e49\u5f02\u5e38\uff0c\u60a8\u53ef\u4ee5\u50cf\u4f7f\u7528\u4efb\u4f55\u5176\u4ed6\u5f02\u5e38\u4e00\u6837\u629b\u51fa\u548c\u6355\u83b7\u5b83\u4eec\u3002<\/p>\n
try {\n    \/\/ \u4ee3\u7801\u53ef\u80fd\u5f15\u53d1 MyCustomException\n} catch (MyCustomException e) {\n    \/\/ \u5904\u7406 MyCustomException\n}<\/pre>\n
\u5b9e\u6218\u6848\u4f8b<\/strong><\/p>\n
\u8003\u8651\u4e00\u4e2a\u5904\u7406\u6587\u4ef6\u8bfb\u53d6\u7684\u5e94\u7528\u7a0b\u5e8f\u3002\u4ee5\u4e0b\u4ee3\u7801\u4f7f\u7528\u9ed8\u8ba4\u7684 IOException<\/code>\uff1a<\/p>\n
public List<String> readFile(String filename) throws IOException {\n    List<String> lines = new ArrayList<>();\n    try (BufferedReader reader = new BufferedReader(new FileReader(filename))) {\n        String line;\n        while ((line = reader.readLine()) != null) {\n            lines.add(line);\n        }\n    } catch (IOException e) {\n        \/\/ \u5904\u7406 IOException\n    }\n    return lines;\n}<\/pre>\n
\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528\u81ea\u5b9a\u4e49\u5f02\u5e38\u7c7b FileNotFoundException<\/code> \u63d0\u9ad8\u6b64\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\uff1a<\/p>\n
public class FileNotFoundException extends RuntimeException {\n\n    public FileNotFoundException(String message) {\n        super(message);\n    }\n}\n\npublic List<String> readFile(String filename) throws FileNotFoundException {\n    List<String> lines = new ArrayList<>();\n    try (BufferedReader reader = new BufferedReader(new FileReader(filename))) {\n        String line;\n        while ((line = reader.readLine()) != null) {\n            lines.add(line);\n        }\n    } catch (FileNotFoundException e) {\n        \/\/ \u5904\u7406 FileNotFoundException\n    }\n    return lines;\n}<\/pre>\n
\u4f7f\u7528\u81ea\u5b9a\u4e49\u5f02\u5e38\u7c7b\u53ef\u663e\u7740\u63d0\u9ad8\u4ee3\u7801\u53ef\u8bfb\u6027\uff0c\u56e0\u4e3a\u5b83\u6e05\u6670\u5730\u4f20\u8fbe\u4e86\u7279\u5b9a\u9519\u8bef\u6761\u4ef6\u7684\u542b\u4e49\u3002<\/p>\n
\u6587\u4e2d\u5173\u4e8e\u5f02\u5e38\u5904\u7406,\u81ea\u5b9a\u4e49\u5f02\u5e38\u7684\u77e5\u8bc6\u4ecb\u7ecd\uff0c\u5e0c\u671b\u5bf9\u4f60\u7684\u5b66\u4e60\u6709\u6240\u5e2e\u52a9\uff01\u82e5\u662f\u53d7\u76ca\u532a\u6d45\uff0c\u90a3\u5c31\u52a8\u52a8\u9f20\u6807\u6536\u85cf\u8fd9\u7bc7\u300a\u5728 Java \u4e2d\u5982\u4f55\u901a\u8fc7\u81ea\u5b9a\u4e49\u5f02\u5e38\u7c7b\u63d0\u5347\u4ee3\u7801\u53ef\u8bfb\u6027\uff1f\u300b\u6587\u7ae0\u5427\uff0c\u4e5f\u53ef\u5173\u6ce8\u516c\u4f17\u53f7\u4e86\u89e3\u76f8\u5173\u6280\u672f\u6587\u7ae0\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5728 Java \u4e2d\u5982\u4f55\u901a\u8fc7\u81ea\u5b9a\u4e49\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-202674","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202674","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=202674"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202674\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=202674"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=202674"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=202674"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}