// 先获取数据库连接，再创建该连接的执行报告try (Connection conn = DriverManager.getConnection(dbUrl, dbUserName, dbPassword);Statement stmt = conn.createStatement()) {String sql = "这里是待执行SQL语句";stmt.executeUpdate(sql); // 执行处理语句
//          createTable(stmt); // 创建表格
//          insertRecord(stmt); // 插入记录
//          updateRecord(stmt); // 更新记录} catch (SQLException e) {e.printStackTrace();}

   // 创建表格private static void createTable(Statement stmt) throws SQLException {String sql = "create table teacher (" // 建表语句+ "   gonghao INT NOT NULL,"+ "    name VARCHAR(32) NOT NULL,"+ "   birthday DATE NULL,"+ "  sex INT NOT NULL,"+ "    course VARCHAR(32) NOT NULL,"+ " PRIMARY KEY (gonghao))"+ "comment = '教师信息表';";int count = stmt.executeUpdate(sql); // 执行处理语句System.out.println("建表语句的返回结果为"+count);}

建表语句的返回结果为0

  // 插入记录private static void insertRecord(Statement stmt) throws SQLException {List<String> sqlList = Arrays.asList( // 以下每个语句插入一条记录"insert into teacher (gonghao, name, birthday, sex, course) VALUES ('1', '张老师', '1983-03-03', 1, '语文')","insert into teacher (gonghao, name, birthday, sex, course) VALUES ('2', '李老师', '1984-04-04', 0, '数学')","insert into teacher (gonghao, name, birthday, sex, course) VALUES ('3', '王老师', '1985-05-05', 1, '英语')","insert into teacher (gonghao, name, birthday, sex, course) VALUES ('4', '赵老师', '1986-06-06', 0, '物理')","insert into teacher (gonghao, name, birthday, sex, course) VALUES ('5', '刘老师', '1987-07-07', 1, '化学')");for (String sql : sqlList) {int count = stmt.executeUpdate(sql); // 执行处理语句System.out.println("添加记录语句的返回结果为"+count);}}

添加记录语句的返回结果为1
添加记录语句的返回结果为1
添加记录语句的返回结果为1
添加记录语句的返回结果为1
添加记录语句的返回结果为1

  // 更新记录private static void updateRecord(Statement stmt) throws SQLException {String sql = "update teacher set course='英语' where sex='1'"; // 记录更新语句int count = stmt.executeUpdate(sql); // 执行处理语句。返回被更新的记录数量System.out.println("更新记录语句的返回结果为"+count);}

更新记录语句的返回结果为3