Java

import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
import java.io.*;
import javax.microedition.io.*;

public class FileConnection extends MIDlet implements CommandListener {
  private Command exit, start;
  private Display display;
  private Form form;
  public FileConnection () 
  {
    display = Display.getDisplay(this);
    exit = new Command("Exit", Command.EXIT, 1);
    start = new Command("Start", Command.EXIT, 1);
    form = new Form("Write To File");
    form.addCommand(exit);
    form.addCommand(start);
    form.setCommandListener(this);
  }
  public void startApp() throws MIDletStateChangeException 
  {
    display.setCurrent(form);
  }
  public void pauseApp() 
  {
  }
  public void destroyApp(boolean unconditional) 
  {
  }
  public void commandAction(Command command, Displayable displayable) 
  {
    if (command == exit) 
    {
      destroyApp(false);
      notifyDestroyed();
    }
    else if (command == start) 
    {
      try 
      {
        OutputConnection connection = (OutputConnection)                     
          Connector.open("file://c:/myfile.txt;append=true", Connector.WRITE );
        OutputStream out = connection.openOutputStream();
        PrintStream output = new PrintStream( out );
        output.println( "This is a test." );
        out.close();
        connection.close();
        Alert alert = new Alert("Completed", "Data Written", null, null);
        alert.setTimeout(Alert.FOREVER);
        alert.setType(AlertType.ERROR);
        display.setCurrent(alert);      
      }
      catch( ConnectionNotFoundException error )
       {
         Alert alert = new Alert(
              "Error", "Cannot access file.", null, null);
         alert.setTimeout(Alert.FOREVER);
         alert.setType(AlertType.ERROR);
         display.setCurrent(alert);      
        }
        catch( IOException error )
        {
         Alert alert = new Alert("Error", error.toString(), null, null);
         alert.setTimeout(Alert.FOREVER);
         alert.setType(AlertType.ERROR);
         display.setCurrent(alert);      
        }
    }
  }

import java.io.IOException;
import java.sql.*;
import javax.servlet.http.*;
import oracle.jdbc.*;

public class TestDB1 extends HttpServlet 
{
	private static final long serialVersionUID = -1L;
	private Connection con;
	private PreparedStatement ps;
	private ResultSet rs;
	
	 protected void doGet(HttpServletRequest request, HttpServletResponse response) 
	    {
			try {

				Class.forName("oracle.jdbc.OracleDriver");
		        con=DriverManager.getConnection("jdbc:oracle:thin:@localhost:1522:xe","system","admin");
				ps = con.prepareStatement("select * from details");
				rs = ps.executeQuery();
				int count = 0;
				while(rs.next())
				{
					response.getWriter().write("Name :: "+rs.getString(1)+" , Age :: "+rs.getString(2)+" , Phone No :: "+rs.getString(3)+"<br>");
				count++;
				}
				response.getWriter().write(count+" records selected...");
			} catch (ClassNotFoundException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			} catch (SQLException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
	    }	 
}