Java

import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import javax.microedition.io.Connector;
import javax.microedition.io.HttpConnection;
import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.CommandListener;
import javax.microedition.lcdui.Displayable;
import javax.microedition.midlet.MIDlet;
import javax.microedition.midlet.MIDletStateChangeException;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Form;
import javax.microedition.lcdui.StringItem;
import javax.microedition.lcdui.TextField;

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

/**
 *
 * @author William
 */
public class midle extends MIDlet implements CommandListener {

    private static String defalutUrl="http://localhost";
    //GUI to input string form the user
    private Display myDisplay=null;
    private Form mainScreen;
    private TextField requestField;

    //GUI for displaying header information
    private Form resultScreen;
    private StringItem resultField;

    //the "SEND" button used in the mainScreen
    Command sendCommand = new Command("SEND", Command.OK, 1);

    //the "BACK" button used in the resultScreen
    Command backCommand = new Command("BACK", Command.OK, 1);

    public midle() {
        myDisplay=Display.getDisplay(this);
        mainScreen=new Form("Type in a string:");
        requestField=new TextField(null, "TOTTI ", 100, TextField.ANY);
        mainScreen.append(requestField);
        mainScreen.addCommand(sendCommand);
        mainScreen.setCommandListener(this);
    }

    public void commandAction(Command c, Displayable d) {
        if(c==sendCommand){
            //retrieving the String that user had entered
            String requestString= requestField.getString();
            //sending a POST request to the web server
            String resultString= sendPostRequest(requestString);
            //displaying the response back from the web server
            resultScreen=new Form("result String");
            resultField=new StringItem(null,resultString);
            resultScreen.append(resultField);
            resultScreen.addCommand(backCommand);
            resultScreen.setCommandListener(this);
            myDisplay.setCurrent(resultScreen);
        }else{
            if(c==backCommand){
                //do it all again
                requestField.setString("SOMETHING GOOD");
                myDisplay.setCurrent(mainScreen);
            }else{
            }
        }
    }

    //send a POST request to the web server
    public String sendPostRequest(String requestString){
        HttpConnection hc=null;
        DataInputStream dis=null;
        DataOutputStream dos=null;
        StringBuffer messagebuffer=new StringBuffer();
        try {
            // open a http connection with the web server to send and recieve operation
            hc=(HttpConnection)Connector.open(defalutUrl,Connector.READ_WRITE);
            //set the request method to POST
            hc.setRequestMethod(HttpConnection.POST);
            //sent the string entered by user byte by byte
            dos=hc.openDataOutputStream();
            byte[] requst_budy=requestString.getBytes();
            for(int i=0;i<requst_budy.length;i++){
                dos.writeByte(requst_budy[i]);
            }
            dos.flush();
            dos.close();
            //retrieve the response back from the web server
            dis=new DataInputStream(hc.openInputStream());
            int ch;
            //first we have to check the content lenght
            long len=hc.getLength();
            if(len!=-1){
                for(int i=0;i<len;i++)
                    if((ch=dis.read())!=-1){
                        messagebuffer.append((char)ch);
                    }else{
                        while((ch=dis.read())!=-1){
                            messagebuffer.append((char)ch);
                        }
                    }
            }
            dis.close();
        } catch (IOException ioe) {
            messagebuffer.append("ERROR!");
        }finally{
            //free up i/0 streams and http connection
            try {
                if(hc!=null)
                    hc.close();
            } catch (Exception e) {
            }
            try {
                if(dis!=null)
                    dis.close();
            } catch (Exception e) {
            }
            try {
                if(dos!=null)
                    dos.close();
            } catch (Exception e) {
            }
            return messagebuffer.toString();
        }
    }

    protected void destroyApp(boolean unconditional) throws MIDletStateChangeException {

    }

    protected void pauseApp() {

    }

    protected void startApp() throws MIDletStateChangeException {
        myDisplay.setCurrent(mainScreen);
    }

}

1. Choose FileNew Project. In the Categories tree, choose Web. Under
Projects, choose Web Application. Click Next.
2. In the Project Name field, type helloservice. In the Project Location
field, browse to the location where all your projects are stored. In the
Server field, make sure that the Sun Java System Application Server Platform
Edition is selected. (If the Sun Java System Application Server is not
available in the Server field, you need to register it in the IDE. Choose
ToolsServer Manager to do so.) Click Finish.