java jdbc数据库操作

 package shb.java.demo3;

 import java.sql.DriverManager;
 import java.sql.ResultSet;
 import java.sql.SQLException;
 import java.sql.Statement;
 /**
  * jdbc操作数据库
  * @Package:com.cnpc.dlp.web.event.controller
  * @Description：
  * @author Shihaobin
  * @Date 2015-8-27下午1:31:15
  */
 public class Demo12 {
     public static void main(String[] args) {
         String url = "jdbc:mysql://localhost:3306/base";
         String username = "root";
         String password = "bin";
         try {
             //加载数据库驱动
             Class.forName("com.mysql.jdbc.Driver");
         } catch (ClassNotFoundException e) {
             // TODO Auto-generated catch block
             e.printStackTrace();
         }
         try {
             //获得和数据库连接
             java.sql.Connection connection= DriverManager.getConnection(url, username, password);
             //创建查询对象
             Statement statement = connection.createStatement();
             String sqlinsert = "insert into usertable (username,password)values('lizhe','923840298')";
             String sqlString = "select username from usertable u where u.password = 'sdf'";
             //执行sql语句
             statement.execute(sqlinsert);
             System.out.println("success");
             statement.close();
             connection.close();
         } catch (SQLException e) {
             // TODO Auto-generated catch block
             e.printStackTrace();
         } 

     }
 }

如有错误请各位纠正，谢谢。