jdbc之连接Oracle的基本步骤

 // 1.加载驱动程序
 Class.forName("oracle.jdbc.driver.OracleDriver");
 // 2.获取数据库连接
 Connection conn = DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:orcl", "j0408", "1");
 // 3.构建SQL语句
 String sql = "insert into t_user(userid,username,password)values(seq_t_user.nextval,'abc','123456')";
 // 4.执行SQL语句
 Statement sts = conn.createStatement();
 // 返回的结果是影响的行数
 int count = sts.executeUpdate(sql);
 System.out.println("影响的行数："+count);
 // 5.关闭资源
 sts.close();
 conn.close();