semovy

/*
 java jdbc連接oracle9i
 設(shè)置環(huán)境變量classpath=.;E:\oracle\ora90\jdbc\lib\classes12.zip;
*/
import java.sql.*;
public class Demo
{
 public static void main(String[] args)
 {
  try
  {
   DriverManager.registerDriver(new oracle.jdbc.OracleDriver());//取其中一個(gè)即可
   Class.forName("oracle.jdbc.driver.OracleDriver");
   
  }catch(Exception e)
  {
   System.out.println("No Driver!");
  }
  try
  {
   String url = "jdbc:oracle:thin:@127.0.0.1:1521:demo";
   String userName = "system";
   String password = "manager";
   Connection conn = DriverManager.getConnection(url,userName,password);
   Statement stmt = conn.createStatement();
   ResultSet rset = stmt.executeQuery("select * from test");
   while(rset.next())
   {
    System.out.println("user_id: "+rset.getString("user_id"));
    System.out.println("user_name: "+rset.getString("user_name"));
    System.out.println("note: "+rset.getString("note"));
   }
  }catch(SQLException e)
  {
   System.out.println("can't access the database!");
  }
 }
}