Не могу соеденится с БД со своей програмки.

import java.sql.* ;
 
public class Kosilu
{
 public static void main(String[] args)throws SQLException
 {
  Connection connection = null;
 
  try
  {
   // Load the JDBC driver
   String driverName = 'oracle.jdbc.driver.OracleDriver';
   Class.forName(driverName);
 
   // Create a connection to the database
   String serverName = '10.201.1.50';
   String portNumber = '1521';
   String sid = 'ORCL';
   String url = 'jdbc:oracle:thin:@' +
                 serverName + ':' +
                 portNumber + ':' +
                 sid;
   String username = 'blabla';
   String password = 'bla';
   connection = DriverManager.getConnection(url, username, password);
  }
 
  catch (ClassNotFoundException e)
  {
   // Could not find the database driver
   System.out.println('We cannot find the database driver');
  }
 
  catch (SQLException e)
  {
   // Could not connect to the database
   System.out.println('We cannot connect to the database');
  }
 }
}

import java.sql.*;
public class So extends java.applet.Applet
{
 Driver driver;
 Connection conn = null;
 
 static String driverUsed = 'oracle.jdbc.driver.OracleDriver';
 // Create a connection to the database
 static String serverName = '10.201.1.50';
 static String portNumber = '1521';
 static String sid = 'ORCL';
 static String url = 'jdbc:oracle:thin:@' +
                     serverName + ':' +
                     portNumber + ':' +
                     sid;
 static String username = 'blabla';
 static String password = 'bla';
 
 public void init()
 {
  makeConnection(url, username, password);
 }
 
 public void makeConnection(String svr, String un, String pw)
 {
  try
  {
   System.out.println('Loading ... ' + driverUsed);
   driver = (Driver)Class.forName(driverUsed).newInstance();
 
   System.out.println('Connecting ... ' + svr);
   conn = DriverManager.getConnection(svr, un, pw);
 
   System.out.println('Ready.');
  }
  catch (Exception e)
  {
   e.printStackTrace();
  }
 }
}