{"id":805,"date":"2022-03-21T12:52:08","date_gmt":"2022-03-21T04:52:08","guid":{"rendered":"https:\/\/axinyi.xuenixiang.com\/?p=805"},"modified":"2022-03-21T12:52:09","modified_gmt":"2022-03-21T04:52:09","slug":"javase-6","status":"publish","type":"post","link":"https:\/\/axinyi.xuenixiang.com\/index.php\/2022\/03\/21\/javase-6\/","title":{"rendered":"JavaSE-\u7b2c\u516d\u7ae0"},"content":{"rendered":"\n

\u7b2c\u516d\u7ae0 \u5f02\u5e38<\/h1>\n\n\n\n

6.1 \u4ec0\u4e48\u662f\u5f02\u5e38<\/h2>\n\n\n\n
public class Demo {\n    public static void main(String[] args) {\n        int i = 10;\n        int n = 0;\n        \/\/\u4f7f\u7528\u9664\u6cd5\n        int res = i\/n;\n        System.out.println(res);\n    }\n}<\/code><\/pre>\n\n\n\n
\"\"<\/figure>\n\n\n\n
  • \u9519\u8bef\u7684\u539f\u56e0\u5c31\u662f\u56e0\u4e3a\u88ab0\u9664<\/li>
  • \u8fd9\u79cd\u4fe1\u606f\u88abjava\u7684\u8fd0\u884c\u73af\u5883\u62a5\u51fa\u6765\u4e86\uff0c\u8fd9\u5c31\u662fjava\u7684\u5f02\u5e38\u4f53\u7cfb<\/li>
  • \u6ce8\u610f\uff1ajava\u7684\u5f02\u5e38\u90fd\u662f\"\u7c7b\"<\/strong><\/li><\/ul>\n\n\n\n
    6.2 \u5f02\u5e38\u7684\u5206\u7c7b<\/h2>\n\n\n\n
    6.2.1 \u5f02\u5e38\u5206\u7c7b\u56fe<\/h3>\n\n\n\n
    \"\"<\/figure>\n\n\n\n
    6.2.2 \u5f02\u5e38\u5206\u7c7b<\/h3>\n\n\n\n
    • Error\u9519\u8bef\uff1a\u5982\u679c\u7a0b\u5e8f\u51fa\u73b0Error\uff0c\u90a3\u4e48\u5c06\u65e0\u6cd5\u6062\u590d\uff0c\u53ea\u80fd\u91cd\u65b0\u542f\u52a8\u5e94\u7528\u7a0b\u5e8f\uff0c\u4f8b\u5982\uff1aOutOfMemeoryError<\/li>
    • \u4e00\u822c\u6027\u5f02\u5e38(\u53d7\u63a7\u5f02\u5e38\uff1b\u7f16\u8bd1\u671f\u5f02\u5e38)\uff1a\u8fd9\u79cd\u5f02\u5e38\u51fa\u73b0\u65f6\uff0c\u5fc5\u987b\u663e\u793a\u7684\u5904\u7406\uff0c\u56e0\u4e3a\uff0c\u4e0d\u5904\u7406\u7a0b\u5e8f\u65e0\u6cd5\u8fd0\u884c<\/li><\/ul>\n\n\n\n
      \"\"<\/figure>\n\n\n\n
      • \u8fd0\u884c\u671f\u5f02\u5e38(\u975e\u53d7\u63a7\u5f02\u5e38)\uff1a\u8fd9\u79cd\u5f02\u5e38\u4e0d\u9700\u8981\u663e\u793a\u5904\u7406\uff0c\u53ea\u5728\u8fd0\u884c\u671f\u95f4\u51fa\u73b0<\/li><\/ul>\n\n\n\n
        \"\"<\/figure>\n\n\n\n
        6.2.3 try\u3001catch\u3001finally<\/h3>\n\n\n\n
        • \u5f02\u5e38\u7684\u6355\u83b7\u548c\u5904\u7406\u91c7\u7528try-catch\u5b8c\u6210\uff0c\u5177\u4f53\u7684\u683c\u5f0f\uff1a<\/li><\/ul>\n\n\n\n
          try{\n    \n}catch(OneException e){\n    \n}catch(TwoException e){\n    \n}finally{\n    \n}<\/code><\/pre>\n\n\n\n
          • try\u4e2d\u5305\u542b\u4efb\u4f55\u53ef\u80fd\u4ea7\u751f\u7684\u4ee3\u7801<\/li>
          • try\u540e\u9762\u53ef\u4ee5\u662f\u4e00\u4e2acatch\u6216\u8005\u591a\u4e2acatch\uff1bcatch\u5c31\u662f\u6355\u83b7\u5f02\u5e38\u7684
            • \u5982\u679ctry\u4ee3\u7801\u5757\u4e2d\u51fa\u73b0\u4e86\u5f02\u5e38\uff0c\u90a3\u4e48\uff0c\u7acb\u523b\u8df3\u8f6c\u5230catch\u8bed\u53e5\u5757\u4e2d<\/li>
            • \u5728try\u51fa\u73b0\u5f02\u5e38\u7684\u4ee3\u7801\u4e2d\u4ee5\u4e0b\u7684\u4ee3\u7801\u4e0d\u4f1a\u6267\u884c\u4e86<\/li><\/ul><\/li>
            • finally\u8868\u793a\uff0c\u65e0\u8bba\u4e0a\u9762\u7684\u4ee3\u7801\u662f\u5426\u6709\u5f02\u5e38\u51fa\u73b0\u90fd\u5fc5\u987b\u6267\u884c<\/li>
            • try\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528finally<\/li><\/ul>\n\n\n\n
              try{\n    \n}finally{\n    \n}<\/code><\/pre>\n\n\n\n
              6.2.3.1 \u6848\u4f8b<\/h4>\n\n\n\n
              public class Demo {\n    public static void main(String[] args) {\n        int i = 10;\n        int n = 0;\n        try {\n            \/\/\u4e1a\u52a1\u4ee3\u7801\n            \/\/\u56e0\u4e3a\uff0c\u8fd9\u4e00\u884c\u4ee3\u7801\u88ab0\u9664\uff0c\u6240\u4ee5\uff0c\u4e0b\u4e00\u884c\u4ee3\u7801\u4e0d\u4f1a\u88ab\u6267\u884c\n            int res = i\/n;\n            \/\/\u6c38\u8fdc\u4e0d\u4f1a\u6267\u884c\n            System.out.println(res);\n        }catch(ArithmeticException e){\n            \/\/e\u8868\u793aArithmeticException\u7c7b\u7684\u5c40\u90e8\u53d8\u91cf\n            System.out.println(\"\u4e0d\u80fd\u88ab0\u9664\");\n        }\n    }\n}<\/code><\/pre>\n\n\n\n
              6.2.3.2 \u53ef\u4ee5\u4f7f\u7528\u4e24\u79cd\u65b9\u5f0f\u8f93\u51fa\u5f02\u5e38\u4fe1\u606f<\/h4>\n\n\n\n
              • \u83b7\u53d6\u5f02\u5e38\u7684\u63cf\u8ff0\u4fe1\u606f<\/li><\/ul>\n\n\n\n
                public class Demo {\n    public static void main(String[] args) {\n        int i = 10;\n        int n = 0;\n        try {\n            \/\/\u4e1a\u52a1\u4ee3\u7801\n            \/\/\u56e0\u4e3a\uff0c\u8fd9\u4e00\u884c\u4ee3\u7801\u88ab0\u9664\uff0c\u6240\u4ee5\uff0c\u4e0b\u4e00\u884c\u4ee3\u7801\u4e0d\u4f1a\u88ab\u6267\u884c\n            int res = i\/n;\n            \/\/\u6c38\u8fdc\u4e0d\u4f1a\u6267\u884c\n            System.out.println(res);\n        }catch(ArithmeticException e){\n            \/\/e\u8868\u793aArithmeticException\u7c7b\u7684\u5c40\u90e8\u53d8\u91cf\n            String message = e.getMessage();\n            System.out.println(\"\u5f02\u5e38\u7684\u63cf\u8ff0\u4fe1\u606f\uff1a\"+message);\n        }\n    }\n}<\/code><\/pre>\n\n\n\n
                • \u83b7\u53d6\u5f02\u5e38\u5806\u6808\u4fe1\u606f(\u9002\u5408\u7a0b\u5e8f\u8c03\u8bd5\u9636\u6bb5)<\/li><\/ul>\n\n\n\n
                  public class Demo {\n    public static void main(String[] args) {\n        int i = 10;\n        int n = 0;\n        try {\n            \/\/\u4e1a\u52a1\u4ee3\u7801\n            \/\/\u56e0\u4e3a\uff0c\u8fd9\u4e00\u884c\u4ee3\u7801\u88ab0\u9664\uff0c\u6240\u4ee5\uff0c\u4e0b\u4e00\u884c\u4ee3\u7801\u4e0d\u4f1a\u88ab\u6267\u884c\n            int res = i\/n;\n            \/\/\u6c38\u8fdc\u4e0d\u4f1a\u6267\u884c\n            System.out.println(res);\n        }catch(ArithmeticException e){\n            \/\/e\u8868\u793aArithmeticException\u7c7b\u7684\u5c40\u90e8\u53d8\u91cf\n            e.printStackTrace();\n        }\n    }\n}<\/code><\/pre>\n\n\n\n
                  \"\"<\/figure>\n\n\n\n
                  6.2.3.3 \u53d7\u63a7\u5f02\u5e38<\/h4>\n\n\n\n
                  public class Demo {\n    public static void main(String[] args) {\n        try{\n            FileInputStream fileInputStream = new FileInputStream();\n        }catch (FileNotFoundException e){\/\/\u5fc5\u987b\u663e\u793a\u7684\u5904\u7406\uff0c\u56e0\u4e3a\uff0c\u8fd9\u662f\u4e00\u4e2a\u7f16\u8bd1\u671f\u5f02\u5e38\n            e.printStackTrace();\n        }\n    }\n}<\/code><\/pre>\n\n\n\n
                  6.2.3.4 finally\u5173\u952e\u5b57<\/h4>\n\n\n\n
                  • \u7279\u70b9\uff1a\u65e0\u8bba\u6267\u884c\u662f\u5426\u6b63\u5e38\uff0c\u90fd\u5fc5\u987b\u6267\u884c\u7684\u4ee3\u7801\u6bb5<\/li><\/ul>\n\n\n\n
                    import java.io.FileInputStream;\nimport java.io.FileNotFoundException;\n\npublic class Demo {\n    public static void main(String[] args) {\n        try{\n            FileInputStream fileInputStream = new FileInputStream(\"D:\/a\/a.txt\");\n        }catch (FileNotFoundException e){\/\/\u5fc5\u987b\u663e\u793a\u7684\u5904\u7406\uff0c\u56e0\u4e3a\uff0c\u8fd9\u662f\u4e00\u4e2a\u7f16\u8bd1\u671f\u5f02\u5e38\n            e.printStackTrace();\n        }finally {\n            System.out.println(\"\u662f\u5fc5\u987b\u6267\u884c\u7684\u4ee3\u7801\");\n        }\n    }\n}<\/code><\/pre>\n\n\n\n
                    • \u4f7f\u7528\u573a\u666f\uff1a\u91ca\u653e\u8d44\u6e90
                      • \u4f8b\u5982\uff1a\u5173\u95ed\u6570\u636e\u5e93\u8fde\u63a5<\/li>
                      • \u4f8b\u5982\uff1a\u5173\u95ed\u6570\u636e\u6d41<\/li><\/ul><\/li>
                      • \u6df1\u5165finally\uff1a\u5728return\u524d\u6267\u884cfinally\u4ee3\u7801\u5757\uff0c\u4f46\u662f\uff0c\u8fd4\u56de\u7684\u662f10\uff0c\u56e0\u4e3aa\u53d8\u91cf\u5df2\u7ecf\u5728\u5f39\u6808\u8fc7\u7a0b\u4e2d\u4e86<\/li><\/ul>\n\n\n\n
                        public class Demo {\n    public static void main(String[] args) {\n        int result = method();\n        System.out.println(result);\n    }\n    \n    public static int method(){\n        int a = 10;\n        try{\n            return a;\n        }finally {\n            System.out.println(\"\u5728return\u524d\u6267\u884c\");\n            a = 100;\n        }\n    }\n}<\/code><\/pre>\n\n\n\n
                        • \u6df1\u5165finally\uff1b\u8fd4\u56de100<\/li><\/ul>\n\n\n\n
                          public class Demo {\n    public static void main(String[] args) {\n        int result = method();\n        System.out.println(result);\n    }\n    \n    public static int method(){\n        int a = 10;\n        try{\n            a = 200;\n        }finally {\n            System.out.println(\"\u5728return\u524d\u6267\u884c\");\n            a = 100;\n        }\n        return a;\n    }\n}<\/code><\/pre>\n\n\n\n
                          6.2.3.5 final\u3001finally\u3001finalize\u7684\u533a\u522b\uff1f<\/h4>\n\n\n\n
                          • final:
                            • \u4fee\u9970\u7c7b\u4e0d\u80fd\u88ab\u7ee7\u627f<\/li>
                            • \u4fee\u9970\u53c2\u6570\uff1a
                              • \u57fa\u672c\u7c7b\u578b\uff1a\u503c\u4e0d\u80fd\u4fee\u6539<\/li>
                              • \u5f15\u7528\u7c7b\u578b\uff1a\u5730\u5740(\u5bf9\u8c61)\u4e0d\u80fd\u4fee\u6539<\/li>
                              • static final\u4fee\u9970\u5e38\u91cf<\/li><\/ul><\/li><\/ul><\/li>
                              • finally:\u4ee3\u7801\u65e0\u8bba\u5982\u4f55\u90fd\u5fc5\u987b\u6267\u884c<\/li>
                              • finalize():\u5783\u573e\u56de\u6536\u524d\u8c03\u7528\u7684\u65b9\u6cd5<\/li><\/ul>\n\n\n\n
                                6.3 \u5982\u4f55\u58f0\u660e\u5f02\u5e38<\/h2>\n\n\n\n
                                • \u5728\u65b9\u6cd5\u4e2d\u53ef\u4ee5\u4f7f\u7528throws\u58f0\u660e\u5f02\u5e38\uff0c\u5982\u679c\u58f0\u660e\u7684\u5f02\u5e38\u4e3a\u53d7\u63a7\u5f02\u5e38\uff0c\u90a3\u4e48\uff0c\u5728\u8c03\u7528\u65b9\u6cd5\u7684\u65f6\u5019\u5fc5\u987b\u5904\u7406<\/li><\/ul>\n\n\n\n
                                  6.3.1 \u58f0\u660e\u5f02\u5e38\uff1b\u5904\u7406\u5f02\u5e38<\/h3>\n\n\n\n
                                  import java.io.FileInputStream;\nimport java.io.FileNotFoundException;\n\npublic class Demo {\n    public static void main(String[] args) {\n        \/\/\u8c03\u7528\u65b9\u6cd5\n        try {\n            method();\n        } catch (FileNotFoundException e) {\n            e.printStackTrace();\n        }\n    }\n\n    public static void method() throws FileNotFoundException{\/\/\u58f0\u660e\u5f02\u5e38\n        FileInputStream fileInputStream = new FileInputStream(\"d:\/a.txt\");\n    }\n}<\/code><\/pre>\n\n\n\n
                                  6.3.2 \u8fd8\u662f\u4f7f\u7528\u58f0\u660e\u5f02\u5e38(\u4e0d\u63a8\u8350)<\/h3>\n\n\n\n
                                  import java.io.FileInputStream;\nimport java.io.FileNotFoundException;\n\npublic class Demo {\n    \/\/\u53ef\u4ee5\u5728\u6b64\u58f0\u660e\u5f02\u5e38\uff0c\u4f46\u662f\uff0c\u8fd9\u6837\u5c31\u628a\u5f02\u5e38\u5904\u7406\u4ea4\u7ed9java\u865a\u62df\u673a\u5904\u7406\u4e86\n    public static void main(String[] args) throws FileNotFoundException {\n        \/\/\u8c03\u7528\u65b9\u6cd5\n        method();\n    }\n\n    public static void method() throws FileNotFoundException{\/\/\u58f0\u660e\u5f02\u5e38\n        FileInputStream fileInputStream = new FileInputStream(\"d:\/a.txt\");\n    }\n}<\/code><\/pre>\n\n\n\n
                                  6.3.3 \u58f0\u660e\u975e\u53d7\u63a7\u5f02\u5e38<\/h3>\n\n\n\n
                                  public class Demo {\n    public static void main(String[] args) {\n        \/\/\u53ef\u4ee5\u4e0d\u7f16\u5199try-catch\uff0c\u56e0\u4e3a\u662f\u4e2a\u975e\u53d7\u63a7\u5f02\u5e38\n        \/\/method();\n\n        \/\/\u5efa\u8bae\u7f16\u5199\u5f02\u5e38\u5904\u7406\n        try{\n            method();\n        }catch (ArithmeticException e){\n            e.printStackTrace();\n        }\n    }\n\n    \/\/\u975e\u53d7\u63a7\u5f02\u5e38\n    public static void method() throws ArithmeticException{\/\/\u58f0\u660e\u5f02\u5e38\n        int i = 10,n = 0;\n        int r = i\/0;\n        System.out.println(r);\n    }\n}<\/code><\/pre>\n\n\n\n
                                  6.4 \u624b\u52a8\u629b\u51fa\u5f02\u5e38<\/h2>\n\n\n\n
                                  • \u4f7f\u7528throw\u5173\u952e\u5b57\u629b\u51fa\u5f02\u5e38
                                    • \u76f8\u5f53\u4e8ereturn\uff0c\u4ee5\u4e0b\u7684\u4ee3\u7801\u4e0d\u88ab\u6267\u884c<\/li>
                                    • \u53ef\u4ee5\u629b\u51fa\u53d7\u63a7\u5f02\u5e38\u6216\u975e\u53d7\u63a7\u5f02\u5e38<\/li><\/ul><\/li><\/ul>\n\n\n\n
                                      6.4.1 \u81ea\u5b9a\u4e49\u4e00\u822c\u6027\u5f02\u5e38<\/h3>\n\n\n\n
                                      public class Demo {\n    public static void main(String[] args) {\n        \/\/\u6d4b\u8bd5\n        method(1,0);\n    }\n\n    public static void method(int i,int n) {\n        try{\n            if (n==0){\n                \/\/\u624b\u52a8\u629b\u51fa\n                throw new MyException(\"\u4e0d\u80fd\u4e3a0\");\n            }\n            if (!(n > 0 && n<=100)){\n                \/\/\u624b\u52a8\u629b\u51fa\n                throw new MyException(\"\u5fc5\u987b\u57281-100\u4e4b\u95f4\");\n            }\n            int result = i \/ n;\n            System.out.println(\"------------>>\"+result);\n\n        }catch(Exception e){\n            e.printStackTrace();\n        }\n\n    }\n}\n\n\/\/\u81ea\u5b9a\u4e49\u5f02\u5e38\u7c7b\nclass MyException extends Exception{\n    public MyException() {\n        super();\n    }\n\n    public MyException(String message) {\n        super(message);\n    }\n\n    public MyException(String message, Throwable cause) {\n        super(message, cause);\n    }\n\n    public MyException(Throwable cause) {\n        super(cause);\n    }\n\n    protected MyException(String message, Throwable cause, boolean enableSuppression, boolean writableStackTrace) {\n        super(message, cause, enableSuppression, writableStackTrace);\n    }\n}<\/code><\/pre>\n\n\n\n
                                      6.4.2 \u81ea\u5b9a\u4e49\u8fd0\u884c\u671f\u5f02\u5e38<\/h3>\n\n\n\n
                                      public class Demo {\n    public static void main(String[] args) {\n        \/\/\u6d4b\u8bd5\n        method(1,0);\n    }\n    \/\/\u624b\u52a8\u629b\u51fa\u5f02\u5e38\u7684\u6d4b\u8bd5\u65b9\u6cd5\n    public static void method(int i,int n) {\n        if (n==0){\n            \/\/\u624b\u52a8\u629b\u51fa\n            throw new MyException(\"\u4e0d\u80fd\u4e3a0\");\n        }\n        if (!(n > 0 && n<=100)){\n            \/\/\u624b\u52a8\u629b\u51fa\n            throw new MyException(\"\u5fc5\u987b\u57281-100\u4e4b\u95f4\");\n        }\n        int result = i \/ n;\n        System.out.println(\"------------>>\"+result);\n    }\n}\n\n\/\/\u81ea\u5b9a\u4e49\u5f02\u5e38\u7c7b\nclass MyException extends RuntimeException{\n    public MyException() {\n        super();\n    }\n\n    public MyException(String message) {\n        super(message);\n    }\n\n    public MyException(String message, Throwable cause) {\n        super(message, cause);\n    }\n\n    public MyException(Throwable cause) {\n        super(cause);\n    }\n\n    protected MyException(String message, Throwable cause, boolean enableSuppression, boolean writableStackTrace) {\n        super(message, cause, enableSuppression, writableStackTrace);\n    }\n}<\/code><\/pre>\n\n\n\n
                                      6.4.3 throws\u548cthrow\u7684\u533a\u522b\uff1f<\/h3>\n\n\n\n
                                      • throws\uff1a\u58f0\u660e\u5f02\u5e38(\u4e0d\u5904\u7406\uff0c\u8c01\u4f7f\u7528\u8c01\u5904\u7406)<\/li>
                                      • throw\uff1a\u629b\u51fa\u5f02\u5e38(\u629b\u51fa\u81ea\u5b9a\u4e49\u5f02\u5e38)<\/li><\/ul>\n\n\n\n
                                        6.5 \u5f02\u5e38\u7684\u6355\u83b7\u987a\u5e8f<\/h2>\n\n\n\n
                                        • \u6355\u83b7\u7684\u987a\u5e8f\uff1a\u4ece\u5c0f\u5230\u5927<\/li>
                                        • \u6848\u4f8b\uff1a<\/li><\/ul>\n\n\n\n
                                          public static void main(String[] args) {\n    try {\n        FileInputStream fileInputStream = new FileInputStream(\"\");\n    } catch (FileNotFoundException e) {\n        e.printStackTrace();\n    } catch (IOException e){\n        e.printStackTrace();\n    } catch (Exception e){\n        e.printStackTrace();\n    }\n}<\/code><\/pre>\n\n\n\n
                                          6.6 \u65b9\u6cd5\u8986\u76d6(\u91cd\u5199)\u4e0e\u5f02\u5e38<\/h2>\n\n\n\n
                                          • \u5b50\u7c7b\u4e0d\u80fd\u629b\u51fa\u6bd4\u7236\u7c7b\u66f4\u591a\u7684\u5f02\u5e38\uff0c\u53ef\u4ee5\u629b\u51fa\u7236\u7c7b\u5f02\u5e38\u7684\u5b50\u5f02\u5e38<\/li><\/ul>\n\n\n\n
                                            6.6.1 \u81ea\u5b9a\u4e49\u5f02\u5e38\u7c7b\u548c\u63a5\u53e3<\/h3>\n\n\n\n
                                            \/\/\u81ea\u5b9a\u4e49\u5f02\u5e38\u7c7b\nclass UserNotFound extends IOException{}\nclass PasswordException extends UserNotFound{}\nclass RegisterException extends Exception {}\n\n\/\/\u521b\u5efa\u63a5\u53e3\ninterface UserDao{\n    \/\/\u7f16\u5199\u4e00\u4e2a\u65b9\u6cd5\n    void show() throws UserNotFound;\n}<\/code><\/pre>\n\n\n\n
                                            6.6.2 \u7b2c\u4e00\u79cd\u60c5\u51b5(\u6b63\u786e)\uff0c\u5b9e\u73b0\u7c7b\u629b\u51fa\u7684\u5f02\u5e38\u4e0e\u63a5\u53e3\u4e2d\u629b\u51fa\u7684\u5f02\u5e38\u76f8\u540c<\/h3>\n\n\n\n
                                            class UserDaoImpl implements UserDao{\n\n    @Override\n    public void show() throws UserNotFound {\n\n    }\n}<\/code><\/pre>\n\n\n\n
                                            6.6.3 \u7b2c\u4e8c\u79cd\u60c5\u51b5(\u6b63\u786e)\uff0c\u53ef\u4ee5\u629b\u51fa\u7236\u7c7b\u5f02\u5e38\u7684\u5b50\u5f02\u5e38<\/h3>\n\n\n\n
                                            class UserDaoImpl implements UserDao{\n\n    @Override\n    public void show() throws UserNotFound,PasswordException {\n\n    }\n}<\/code><\/pre>\n\n\n\n
                                            6.6.4 \u7b2c\u4e09\u79cd\u60c5\u51b5(\u9519\u8bef)\uff0c\u4e0d\u80fd\u629b\u51fa\u6bd4\u7236\u7c7b\u66f4\u591a\u7684\u5f02\u5e38<\/h3>\n\n\n\n
                                            class UserDaoImpl implements UserDao{\n\n    @Override\n    public void show() throws UserNotFound,RegisterException {\n\n    }\n}<\/code><\/pre>\n\n\n\n
                                            6.7 \u603b\u7ed3<\/h2>\n\n\n\n
                                            6.7.1 \u53d7\u63a7\u5f02\u5e38\u3001\u975e\u53d7\u63a7\u5f02\u5e38\u533a\u522b\uff1a<\/h3>\n\n\n\n
                                            • \u53d7\u63a7\u5f02\u5e38\uff1a\u5fc5\u987b\u663e\u793a\u7684\u5904\u7406<\/li>
                                            • \u975e\u53d7\u63a7\u5f02\u5e38\uff1a\u53ef\u4ee5\u4e0d\u7528\u663e\u793a\u5904\u7406\uff0c\u8fd0\u884c\u65f6\u4e0d\u9700\u8981\u5904\u7406\uff0c\u76f4\u63a5\u7531jvm\u6355\u83b7\uff1b<\/li><\/ul>\n\n\n\n
                                              6.7.2 \u5f02\u5e38\u7684\u5173\u952e\u5b57\uff1a<\/h3>\n\n\n\n
                                              • try\u628a\u6709\u53ef\u80fd\u51fa\u73b0\u95ee\u9898\u7684\u4ee3\u7801\u7f16\u5199\u5728\u6b64<\/li>
                                              • catch\u5f02\u5e38\u6355\u83b7<\/li>
                                              • finally\u4ee3\u7801\u65e0\u8bba\u5982\u4f55\u90fd\u5fc5\u987b\u6267\u884c<\/li>
                                              • throws\u58f0\u660e\u5f02\u5e38\uff0c\u4f46\u4e0d\u5904\u7406(\u4e00\u822c\u90fd\u662f\u5e95\u5c42\u4ee3\u7801)<\/li>
                                              • throws\u624b\u52a8\u629b\u51fa\u5f02\u5e38(\u81ea\u5b9a\u4e49\u5f02\u5e38)<\/li><\/ul>\n\n\n\n
                                                6.7.3 \u65b9\u6cd5\u8986\u76d6\u4e0e\u5f02\u5e38<\/h3>\n\n\n\n
                                                • \u5b50\u7c7b\u4e0d\u80fd\u629b\u51fa\u6bd4\u7236\u7c7b\u66f4\u591a\u7684\u5f02\u5e38\uff0c\u53ef\u4ee5\u629b\u51fa\u7236\u7c7b\u5f02\u5e38\u7684\u5b50\u5f02\u5e38<\/li><\/ul>\n","protected":false},"excerpt":{"rendered":"
                                                  \u7b2c\u516d\u7ae0 \u5f02\u5e38 6.1 \u4ec0\u4e48\u662f\u5f02\u5e38 \u9519\u8bef\u7684\u539f\u56e0\u5c31\u662f\u56e0\u4e3a\u88ab0\u9664 \u8fd9\u79cd\u4fe1\u606f\u88abjava\u7684\u8fd0\u884c\u73af\u5883\u62a5\u51fa\u6765\u4e86\uff0c\u8fd9\u5c31\u662fjava\u7684\u5f02\u5e38\u4f53\u7cfb \u6ce8\u610f\uff1a …<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[10],"tags":[],"_links":{"self":[{"href":"https:\/\/axinyi.xuenixiang.com\/index.php\/wp-json\/wp\/v2\/posts\/805"}],"collection":[{"href":"https:\/\/axinyi.xuenixiang.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/axinyi.xuenixiang.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/axinyi.xuenixiang.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/axinyi.xuenixiang.com\/index.php\/wp-json\/wp\/v2\/comments?post=805"}],"version-history":[{"count":4,"href":"https:\/\/axinyi.xuenixiang.com\/index.php\/wp-json\/wp\/v2\/posts\/805\/revisions"}],"predecessor-version":[{"id":814,"href":"https:\/\/axinyi.xuenixiang.com\/index.php\/wp-json\/wp\/v2\/posts\/805\/revisions\/814"}],"wp:attachment":[{"href":"https:\/\/axinyi.xuenixiang.com\/index.php\/wp-json\/wp\/v2\/media?parent=805"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/axinyi.xuenixiang.com\/index.php\/wp-json\/wp\/v2\/categories?post=805"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/axinyi.xuenixiang.com\/index.php\/wp-json\/wp\/v2\/tags?post=805"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}