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Java JDBC（JavaDataBase Connectivity）是一种规范的Java API，主要用于连接和处理数据库、执行SQL语句。您可以通过Java JDBC接口连接宽表引擎，并结合Lindorm SQL进行应用开发。本文介绍使用MySQL协议，通过Java JDBC接口进行应用开发的...

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【Java 虚拟机原理】Class 字节码二进制文件分析三 ( 访问和修饰标志 | 类索引 | 父类索引 | 接口计数器 | 接口表 | 字段计数器 | 字段表 )（三）

四、接口计数器interface_count ( 接口计数器 ) : 在 super_class ( 父类索引 ) 后面的 2 22 字节就是接口计数器 ; 表示当前类的直接父类或接口数 , 间接的不算 ;值为 00 00 , 也就是没有实现任何接口 , 接口数为 0 00 ; 五...

【Java 虚拟机原理】Class 字节码二进制文件分析三 ( 访问和修饰标志 | 类索引 | 父类索引 | 接口计数器 | 接口表 | 字段计数器 | 字段表 )（二）

一、访问和修饰标志access_flags ( 访问和修饰标志 ) : 常量池后面的 2 22 位就是访问和修饰标志 ; 访问和修饰标志 00 21 ; 表示类 / 接口的访问权限 / 基础属性 ;根据下面两个表解读访问和修饰标志 ;访问和修饰标志 00 21 ; 这是根据上述表格中的...

【Java 虚拟机原理】Class 字节码二进制文件分析三 ( 访问和修饰标志 | 类索引 | 父类索引 | 接口计数器 | 接口表 | 字段计数器 | 字段表 )（一）

文章目录前言一、访问和修饰标志二、类索引三、父类索引四、接口计数器五、接口表六、字段计数器七、字段表前言上一篇博客【Java 虚拟机原理】Class 字节码二进制文件分析二 ( 常量池位置 | 常量池结构 | tag | info[] | 完整分析字节码文件中的常量池二进制数据 ) ;分析到 S...

Java Class对象如何判断该类是否为接口、枚举、注释类型？

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