jdbc简单连接oracle数据库

package com.shangsheng;

import java.sql.*;

public class UserOracle {
    public static void main(String[] args) throws SQLException, ClassNotFoundException {
        final String username="scott";
        final String password="root";
        final String url="jdbc:oracle:thin:@127.0.0.1:1521:orcl";
        Class.forName("oracle.jdbc.driver.OracleDriver");
        Connection connection = DriverManager.getConnection(url,username,password);
        Statement statement = connection.createStatement();
//        String sql="select * from usertest ";
//        ResultSet resultSet = statement.executeQuery(sql);
//       while (resultSet.next()){
//           int anInt = resultSet.getInt(1);
//           String string = resultSet.getString(2);
//           System.out.println("id:"+anInt);
//           System.out.println("name:"+string);
//       }
　　　　　　//create sequence usertest_key 创建序列
        String sql="insert into USERTEST values(usertest_key.nextval,嘻嘻嘻') ";
        statement.execute(sql);
        statement.close();
    }
}

配置:

<dependency>
  <groupId>com.hynnet</groupId>
  <artifactId>oracle-driver-ojdbc</artifactId>
  <version>12.1.0.2</version>
</dependency>