java 连接SQL2005数据库

package connectDB;
import java.sql.*;

public class ConnectSql {
private final String Driver = "com.microsoft.sqlserver.jdbc.SQLServerDriver";
    private final String url = "jdbc:sqlserver://192.168.2.197:1433;databaseName=ggg";
   private final String password = "protel";
   private final String userName = "sa";
   private Connection conn=null;
   
   public Connection getConnection(){
   try{
   Class.forName(Driver);
   conn = DriverManager.getConnection(url,userName,password);
   }catch(Exception e){
   e.printStackTrace();
   }   
   return conn;
   }
   public static void main(String[] args) throws SQLException{
   ConnectSql cs = new ConnectSql();
   Connection c = cs.getConnection();
//    if(c != null){
//    System.out.println("success");
//    }
   Statement sql=c.createStatement();
   String addDB="insert into AttachdataInfo values('5421','987654321','DD','','','','','','')";
   String deleteDB="delete from AttachdataInfo where extension='5421'";
   String upDateDB="update AttachdataInfo set COMPANY_ID='567' where extension='5421'";
  try
  {
   sql.execute(addDB);//add Data to DB
   sql.execute(deleteDB);//delete table in DB
   sql.execute(upDateDB);//updata table in DB
   ResultSet rs=sql.executeQuery("select * from AttachdataInfo");
  
   for(int j=1;j<=rs.getMetaData().getColumnCount();j++)
   {
   System.out.print(rs.getMetaData().getColumnName(j)+"\t");
   }
   System.out.println();
   while(rs.next())
   {
   for(int j=1;j<=rs.getMetaData().getColumnCount();j++)
   {
   System.out.print(rs.getObject(j)+"\t");
   }
   System.out.println();
   }

   sql.close();
   c.close();
  }
  catch(SQLException e)
  {
  e.printStackTrace();
  }
   }
}