Java by API/javax.microedition.io/HttpConnection

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HttpConnection: getFile()

   <source lang="java">

import java.io.IOException; import javax.microedition.io.Connector; import javax.microedition.io.HttpConnection; import javax.microedition.lcdui.rumand; import javax.microedition.lcdui.rumandListener; import javax.microedition.lcdui.Display; import javax.microedition.lcdui.Displayable; import javax.microedition.lcdui.Form; import javax.microedition.lcdui.StringItem; import javax.microedition.lcdui.TextField; import javax.microedition.midlet.MIDlet; public class ConnectHttpMIDlet extends MIDlet implements CommandListener {

 private Command exitCommand  = new Command("Exit", Command.EXIT, 1);
 private Command sendCommand= new Command("Send", Command.OK, 1);
 private Command backCommand = new Command("Upload", Command.OK, 1);
 private Display display;
 private String defaultURL = "http://www.g.ru/p=MDIP&u=b&y=y&hc=0&hs=0";
 private Form mainForm, resultForm;
 private TextField URL = new TextField(null, defaultURL, 250, TextField.URL);
 private StringItem resultItem;
 public ConnectHttpMIDlet() {
   display = Display.getDisplay(this);
 }
 public void startApp() {
   mainForm = new Form("Data");
   mainForm.append(URL);
   mainForm.addCommand(sendCommand);
   mainForm.addCommand(exitCommand);
   mainForm.setCommandListener(this);
   display.setCurrent(mainForm);
 }
 public void pauseApp() {
 }
 public void destroyApp(boolean unconditional) {
 }
 public void commandAction(Command c, Displayable s) {
   if (c == sendCommand) {
     String result = "";
     resultItem = new StringItem(null, result);
     resultForm = new Form("Result");
     String URLString = URL.getString();
     try {
       result = requestUsingGET(URLString);
     } catch (IOException e) {
       result = "failed";
     }
     resultItem.setText(result);
     resultForm.append(resultItem);
     resultForm.addCommand(backCommand);
     resultForm.setCommandListener(this);
     display.setCurrent(resultForm);
   } else if (c == backCommand) {
     URL.setString(defaultURL);
     display.setCurrent(mainForm);
   } else {
     destroyApp(false);
     notifyDestroyed();
   }
 }
 private String requestUsingGET(String URLString) throws IOException {
   HttpConnection hpc = null;
   String content = "";
   try {
     hpc = (HttpConnection) Connector.open(URLString);
     content += "URL: " + hpc.getURL() + "\n";
     content += "Protocol: " + hpc.getProtocol() + "\n";
     content += "Host: " + hpc.getHost() + "\n";
     content += "Port: " + hpc.getPort() + "\n";
     content += "File: " + hpc.getFile() + "\n";
     content += "Query: " + hpc.getQuery() + "\n";
     content += "reference: " + hpc.getRef() + "\n";
     content += "request method: " + hpc.getRequestMethod();
     if (hpc != null)
       hpc.close();
   } catch (IOException e2) {
   }
   return content;
 }

}

 </source>
   
  
 
  



HttpConnection: getHeaderField(String value) throws IOException

   <source lang="java">

import java.io.IOException; import java.io.InputStream; import javax.microedition.io.Connector; import javax.microedition.io.HttpConnection; import javax.microedition.lcdui.Alert; import javax.microedition.lcdui.rumand; import javax.microedition.lcdui.rumandListener; import javax.microedition.lcdui.Display; import javax.microedition.lcdui.Displayable; import javax.microedition.lcdui.Form; import javax.microedition.midlet.MIDlet; public class CookieMIDlet extends MIDlet implements CommandListener, Runnable {

 private Display mDisplay;
 private Form mForm;
 private String mSession;
 public void startApp() {
   mDisplay = Display.getDisplay(this);
   mForm = new Form("CookieMIDlet");
   mForm.addCommand(new Command("Exit", Command.EXIT, 0));
   mForm.addCommand(new Command("Send", Command.SCREEN, 0));
   mForm.setCommandListener(this);

   mDisplay.setCurrent(mForm);
 }
 public void pauseApp() {
 }
 public void destroyApp(boolean unconditional) {
 }
 public void commandAction(Command c, Displayable s) {
   if (c.getCommandType() == Command.EXIT)
     notifyDestroyed();
   else {
     Form waitForm = new Form("Connecting...");
     mDisplay.setCurrent(waitForm);
     Thread t = new Thread(this);
     t.start();
   }
 }
 public void run() {
   String url = getAppProperty("CookieMIDlet-URL");
   try {
     HttpConnection hc = (HttpConnection) Connector.open(url);
     if (mSession != null)
       hc.setRequestProperty("cookie", mSession);
     InputStream in = hc.openInputStream();
     String cookie = hc.getHeaderField("Set-cookie");
     if (cookie != null) {
       int semicolon = cookie.indexOf(";");
       mSession = cookie.substring(0, semicolon);
     }
     int length = (int) hc.getLength();
     byte[] raw = new byte[length];
     in.read(raw);
     String s = new String(raw);
     Alert a = new Alert("Response", s, null, null);
     a.setTimeout(Alert.FOREVER);
     mDisplay.setCurrent(a, mForm);
     in.close();
     hc.close();
   } catch (IOException ioe) {
     Alert a = new Alert("Exception", ioe.toString(), null, null);
     a.setTimeout(Alert.FOREVER);
     mDisplay.setCurrent(a, mForm);
   }
 }

}

 </source>
   
  
 
  



HttpConnection: getPort()

   <source lang="java">

import java.io.IOException; import javax.microedition.io.Connector; import javax.microedition.io.HttpConnection; import javax.microedition.lcdui.rumand; import javax.microedition.lcdui.rumandListener; import javax.microedition.lcdui.Display; import javax.microedition.lcdui.Displayable; import javax.microedition.lcdui.Form; import javax.microedition.lcdui.StringItem; import javax.microedition.lcdui.TextField; import javax.microedition.midlet.MIDlet; public class ConnectHttpMIDlet extends MIDlet implements CommandListener {

 private Command exitCommand  = new Command("Exit", Command.EXIT, 1);
 private Command sendCommand= new Command("Send", Command.OK, 1);
 private Command backCommand = new Command("Upload", Command.OK, 1);
 private Display display;
 private String defaultURL = "http://www.g.ru/p=MDIP&u=b&y=y&hc=0&hs=0";
 private Form mainForm, resultForm;
 private TextField URL = new TextField(null, defaultURL, 250, TextField.URL);
 private StringItem resultItem;
 public ConnectHttpMIDlet() {
   display = Display.getDisplay(this);
 }
 public void startApp() {
   mainForm = new Form("Data");
   mainForm.append(URL);
   mainForm.addCommand(sendCommand);
   mainForm.addCommand(exitCommand);
   mainForm.setCommandListener(this);
   display.setCurrent(mainForm);
 }
 public void pauseApp() {
 }
 public void destroyApp(boolean unconditional) {
 }
 public void commandAction(Command c, Displayable s) {
   if (c == sendCommand) {
     String result = "";
     resultItem = new StringItem(null, result);
     resultForm = new Form("Result");
     String URLString = URL.getString();
     try {
       result = requestUsingGET(URLString);
     } catch (IOException e) {
       result = "failed";
     }
     resultItem.setText(result);
     resultForm.append(resultItem);
     resultForm.addCommand(backCommand);
     resultForm.setCommandListener(this);
     display.setCurrent(resultForm);
   } else if (c == backCommand) {
     URL.setString(defaultURL);
     display.setCurrent(mainForm);
   } else {
     destroyApp(false);
     notifyDestroyed();
   }
 }
 private String requestUsingGET(String URLString) throws IOException {
   HttpConnection hpc = null;
   String content = "";
   try {
     hpc = (HttpConnection) Connector.open(URLString);
     content += "URL: " + hpc.getURL() + "\n";
     content += "Protocol: " + hpc.getProtocol() + "\n";
     content += "Host: " + hpc.getHost() + "\n";
     content += "Port: " + hpc.getPort() + "\n";
     content += "File: " + hpc.getFile() + "\n";
     content += "Query: " + hpc.getQuery() + "\n";
     content += "reference: " + hpc.getRef() + "\n";
     content += "request method: " + hpc.getRequestMethod();
     if (hpc != null)
       hpc.close();
   } catch (IOException e2) {
   }
   return content;
 }

}

 </source>
   
  
 
  



HttpConnection: getProtocol()

   <source lang="java">

import java.io.IOException; import javax.microedition.io.Connector; import javax.microedition.io.HttpConnection; import javax.microedition.lcdui.rumand; import javax.microedition.lcdui.rumandListener; import javax.microedition.lcdui.Display; import javax.microedition.lcdui.Displayable; import javax.microedition.lcdui.Form; import javax.microedition.lcdui.StringItem; import javax.microedition.lcdui.TextField; import javax.microedition.midlet.MIDlet; public class ConnectHttpMIDlet extends MIDlet implements CommandListener {

 private Command exitCommand  = new Command("Exit", Command.EXIT, 1);
 private Command sendCommand= new Command("Send", Command.OK, 1);
 private Command backCommand = new Command("Upload", Command.OK, 1);
 private Display display;
 private String defaultURL = "http://www.g.ru/p=MDIP&u=b&y=y&hc=0&hs=0";
 private Form mainForm, resultForm;
 private TextField URL = new TextField(null, defaultURL, 250, TextField.URL);
 private StringItem resultItem;
 public ConnectHttpMIDlet() {
   display = Display.getDisplay(this);
 }
 public void startApp() {
   mainForm = new Form("Data");
   mainForm.append(URL);
   mainForm.addCommand(sendCommand);
   mainForm.addCommand(exitCommand);
   mainForm.setCommandListener(this);
   display.setCurrent(mainForm);
 }
 public void pauseApp() {
 }
 public void destroyApp(boolean unconditional) {
 }
 public void commandAction(Command c, Displayable s) {
   if (c == sendCommand) {
     String result = "";
     resultItem = new StringItem(null, result);
     resultForm = new Form("Result");
     String URLString = URL.getString();
     try {
       result = requestUsingGET(URLString);
     } catch (IOException e) {
       result = "failed";
     }
     resultItem.setText(result);
     resultForm.append(resultItem);
     resultForm.addCommand(backCommand);
     resultForm.setCommandListener(this);
     display.setCurrent(resultForm);
   } else if (c == backCommand) {
     URL.setString(defaultURL);
     display.setCurrent(mainForm);
   } else {
     destroyApp(false);
     notifyDestroyed();
   }
 }
 private String requestUsingGET(String URLString) throws IOException {
   HttpConnection hpc = null;
   String content = "";
   try {
     hpc = (HttpConnection) Connector.open(URLString);
     content += "URL: " + hpc.getURL() + "\n";
     content += "Protocol: " + hpc.getProtocol() + "\n";
     content += "Host: " + hpc.getHost() + "\n";
     content += "Port: " + hpc.getPort() + "\n";
     content += "File: " + hpc.getFile() + "\n";
     content += "Query: " + hpc.getQuery() + "\n";
     content += "reference: " + hpc.getRef() + "\n";
     content += "request method: " + hpc.getRequestMethod();
     if (hpc != null)
       hpc.close();
   } catch (IOException e2) {
   }
   return content;
 }

}

 </source>
   
  
 
  



HttpConnection: getQuery()

   <source lang="java">

import java.io.IOException; import javax.microedition.io.Connector; import javax.microedition.io.HttpConnection; import javax.microedition.lcdui.rumand; import javax.microedition.lcdui.rumandListener; import javax.microedition.lcdui.Display; import javax.microedition.lcdui.Displayable; import javax.microedition.lcdui.Form; import javax.microedition.lcdui.StringItem; import javax.microedition.lcdui.TextField; import javax.microedition.midlet.MIDlet; public class ConnectHttpMIDlet extends MIDlet implements CommandListener {

 private Command exitCommand  = new Command("Exit", Command.EXIT, 1);
 private Command sendCommand= new Command("Send", Command.OK, 1);
 private Command backCommand = new Command("Upload", Command.OK, 1);
 private Display display;
 private String defaultURL = "http://www.g.ru/p=MDIP&u=b&y=y&hc=0&hs=0";
 private Form mainForm, resultForm;
 private TextField URL = new TextField(null, defaultURL, 250, TextField.URL);
 private StringItem resultItem;
 public ConnectHttpMIDlet() {
   display = Display.getDisplay(this);
 }
 public void startApp() {
   mainForm = new Form("Data");
   mainForm.append(URL);
   mainForm.addCommand(sendCommand);
   mainForm.addCommand(exitCommand);
   mainForm.setCommandListener(this);
   display.setCurrent(mainForm);
 }
 public void pauseApp() {
 }
 public void destroyApp(boolean unconditional) {
 }
 public void commandAction(Command c, Displayable s) {
   if (c == sendCommand) {
     String result = "";
     resultItem = new StringItem(null, result);
     resultForm = new Form("Result");
     String URLString = URL.getString();
     try {
       result = requestUsingGET(URLString);
     } catch (IOException e) {
       result = "failed";
     }
     resultItem.setText(result);
     resultForm.append(resultItem);
     resultForm.addCommand(backCommand);
     resultForm.setCommandListener(this);
     display.setCurrent(resultForm);
   } else if (c == backCommand) {
     URL.setString(defaultURL);
     display.setCurrent(mainForm);
   } else {
     destroyApp(false);
     notifyDestroyed();
   }
 }
 private String requestUsingGET(String URLString) throws IOException {
   HttpConnection hpc = null;
   String content = "";
   try {
     hpc = (HttpConnection) Connector.open(URLString);
     content += "URL: " + hpc.getURL() + "\n";
     content += "Protocol: " + hpc.getProtocol() + "\n";
     content += "Host: " + hpc.getHost() + "\n";
     content += "Port: " + hpc.getPort() + "\n";
     content += "File: " + hpc.getFile() + "\n";
     content += "Query: " + hpc.getQuery() + "\n";
     content += "reference: " + hpc.getRef() + "\n";
     content += "request method: " + hpc.getRequestMethod();
     if (hpc != null)
       hpc.close();
   } catch (IOException e2) {
   }
   return content;
 }

}

 </source>
   
  
 
  



HttpConnection: getRef()

   <source lang="java">

import java.io.IOException; import javax.microedition.io.Connector; import javax.microedition.io.HttpConnection; import javax.microedition.lcdui.rumand; import javax.microedition.lcdui.rumandListener; import javax.microedition.lcdui.Display; import javax.microedition.lcdui.Displayable; import javax.microedition.lcdui.Form; import javax.microedition.lcdui.StringItem; import javax.microedition.lcdui.TextField; import javax.microedition.midlet.MIDlet; public class ConnectHttpMIDlet extends MIDlet implements CommandListener {

 private Command exitCommand  = new Command("Exit", Command.EXIT, 1);
 private Command sendCommand= new Command("Send", Command.OK, 1);
 private Command backCommand = new Command("Upload", Command.OK, 1);
 private Display display;
 private String defaultURL = "http://www.g.ru/p=MDIP&u=b&y=y&hc=0&hs=0";
 private Form mainForm, resultForm;
 private TextField URL = new TextField(null, defaultURL, 250, TextField.URL);
 private StringItem resultItem;
 public ConnectHttpMIDlet() {
   display = Display.getDisplay(this);
 }
 public void startApp() {
   mainForm = new Form("Data");
   mainForm.append(URL);
   mainForm.addCommand(sendCommand);
   mainForm.addCommand(exitCommand);
   mainForm.setCommandListener(this);
   display.setCurrent(mainForm);
 }
 public void pauseApp() {
 }
 public void destroyApp(boolean unconditional) {
 }
 public void commandAction(Command c, Displayable s) {
   if (c == sendCommand) {
     String result = "";
     resultItem = new StringItem(null, result);
     resultForm = new Form("Result");
     String URLString = URL.getString();
     try {
       result = requestUsingGET(URLString);
     } catch (IOException e) {
       result = "failed";
     }
     resultItem.setText(result);
     resultForm.append(resultItem);
     resultForm.addCommand(backCommand);
     resultForm.setCommandListener(this);
     display.setCurrent(resultForm);
   } else if (c == backCommand) {
     URL.setString(defaultURL);
     display.setCurrent(mainForm);
   } else {
     destroyApp(false);
     notifyDestroyed();
   }
 }
 private String requestUsingGET(String URLString) throws IOException {
   HttpConnection hpc = null;
   String content = "";
   try {
     hpc = (HttpConnection) Connector.open(URLString);
     content += "URL: " + hpc.getURL() + "\n";
     content += "Protocol: " + hpc.getProtocol() + "\n";
     content += "Host: " + hpc.getHost() + "\n";
     content += "Port: " + hpc.getPort() + "\n";
     content += "File: " + hpc.getFile() + "\n";
     content += "Query: " + hpc.getQuery() + "\n";
     content += "reference: " + hpc.getRef() + "\n";
     content += "request method: " + hpc.getRequestMethod();
     if (hpc != null)
       hpc.close();
   } catch (IOException e2) {
   }
   return content;
 }

}

 </source>
   
  
 
  



HttpConnection: getRequestMethod()

   <source lang="java">

import java.io.IOException; import javax.microedition.io.Connector; import javax.microedition.io.HttpConnection; import javax.microedition.lcdui.rumand; import javax.microedition.lcdui.rumandListener; import javax.microedition.lcdui.Display; import javax.microedition.lcdui.Displayable; import javax.microedition.lcdui.Form; import javax.microedition.lcdui.StringItem; import javax.microedition.lcdui.TextField; import javax.microedition.midlet.MIDlet; public class ConnectHttpMIDlet extends MIDlet implements CommandListener {

 private Command exitCommand  = new Command("Exit", Command.EXIT, 1);
 private Command sendCommand= new Command("Send", Command.OK, 1);
 private Command backCommand = new Command("Upload", Command.OK, 1);
 private Display display;
 private String defaultURL = "http://www.g.ru/p=MDIP&u=b&y=y&hc=0&hs=0";
 private Form mainForm, resultForm;
 private TextField URL = new TextField(null, defaultURL, 250, TextField.URL);
 private StringItem resultItem;
 public ConnectHttpMIDlet() {
   display = Display.getDisplay(this);
 }
 public void startApp() {
   mainForm = new Form("Data");
   mainForm.append(URL);
   mainForm.addCommand(sendCommand);
   mainForm.addCommand(exitCommand);
   mainForm.setCommandListener(this);
   display.setCurrent(mainForm);
 }
 public void pauseApp() {
 }
 public void destroyApp(boolean unconditional) {
 }
 public void commandAction(Command c, Displayable s) {
   if (c == sendCommand) {
     String result = "";
     resultItem = new StringItem(null, result);
     resultForm = new Form("Result");
     String URLString = URL.getString();
     try {
       result = requestUsingGET(URLString);
     } catch (IOException e) {
       result = "failed";
     }
     resultItem.setText(result);
     resultForm.append(resultItem);
     resultForm.addCommand(backCommand);
     resultForm.setCommandListener(this);
     display.setCurrent(resultForm);
   } else if (c == backCommand) {
     URL.setString(defaultURL);
     display.setCurrent(mainForm);
   } else {
     destroyApp(false);
     notifyDestroyed();
   }
 }
 private String requestUsingGET(String URLString) throws IOException {
   HttpConnection hpc = null;
   String content = "";
   try {
     hpc = (HttpConnection) Connector.open(URLString);
     content += "URL: " + hpc.getURL() + "\n";
     content += "Protocol: " + hpc.getProtocol() + "\n";
     content += "Host: " + hpc.getHost() + "\n";
     content += "Port: " + hpc.getPort() + "\n";
     content += "File: " + hpc.getFile() + "\n";
     content += "Query: " + hpc.getQuery() + "\n";
     content += "reference: " + hpc.getRef() + "\n";
     content += "request method: " + hpc.getRequestMethod();
     if (hpc != null)
       hpc.close();
   } catch (IOException e2) {
   }
   return content;
 }

}

 </source>
   
  
 
  



HttpConnection: getURL()

   <source lang="java">

import java.io.IOException; import javax.microedition.io.Connector; import javax.microedition.io.HttpConnection; import javax.microedition.lcdui.rumand; import javax.microedition.lcdui.rumandListener; import javax.microedition.lcdui.Display; import javax.microedition.lcdui.Displayable; import javax.microedition.lcdui.Form; import javax.microedition.lcdui.StringItem; import javax.microedition.lcdui.TextField; import javax.microedition.midlet.MIDlet; public class ConnectHttpMIDlet extends MIDlet implements CommandListener {

 private Command exitCommand  = new Command("Exit", Command.EXIT, 1);
 private Command sendCommand= new Command("Send", Command.OK, 1);
 private Command backCommand = new Command("Upload", Command.OK, 1);
 private Display display;
 private String defaultURL = "http://www.g.ru/p=MDIP&u=b&y=y&hc=0&hs=0";
 private Form mainForm, resultForm;
 private TextField URL = new TextField(null, defaultURL, 250, TextField.URL);
 private StringItem resultItem;
 public ConnectHttpMIDlet() {
   display = Display.getDisplay(this);
 }
 public void startApp() {
   mainForm = new Form("Data");
   mainForm.append(URL);
   mainForm.addCommand(sendCommand);
   mainForm.addCommand(exitCommand);
   mainForm.setCommandListener(this);
   display.setCurrent(mainForm);
 }
 public void pauseApp() {
 }
 public void destroyApp(boolean unconditional) {
 }
 public void commandAction(Command c, Displayable s) {
   if (c == sendCommand) {
     String result = "";
     resultItem = new StringItem(null, result);
     resultForm = new Form("Result");
     String URLString = URL.getString();
     try {
       result = requestUsingGET(URLString);
     } catch (IOException e) {
       result = "failed";
     }
     resultItem.setText(result);
     resultForm.append(resultItem);
     resultForm.addCommand(backCommand);
     resultForm.setCommandListener(this);
     display.setCurrent(resultForm);
   } else if (c == backCommand) {
     URL.setString(defaultURL);
     display.setCurrent(mainForm);
   } else {
     destroyApp(false);
     notifyDestroyed();
   }
 }
 private String requestUsingGET(String URLString) throws IOException {
   HttpConnection hpc = null;
   String content = "";
   try {
     hpc = (HttpConnection) Connector.open(URLString);
     content += "URL: " + hpc.getURL() + "\n";
     content += "Protocol: " + hpc.getProtocol() + "\n";
     content += "Host: " + hpc.getHost() + "\n";
     content += "Port: " + hpc.getPort() + "\n";
     content += "File: " + hpc.getFile() + "\n";
     content += "Query: " + hpc.getQuery() + "\n";
     content += "reference: " + hpc.getRef() + "\n";
     content += "request method: " + hpc.getRequestMethod();
     if (hpc != null)
       hpc.close();
   } catch (IOException e2) {
   }
   return content;
 }

}

 </source>
   
  
 
  



HttpConnection.HTTP_OK

   <source lang="java">

import java.io.InputStream; import java.io.IOException; import java.io.OutputStream; import javax.microedition.io.Connector; import javax.microedition.io.HttpConnection; import javax.microedition.lcdui.Alert; import javax.microedition.lcdui.AlertType; import javax.microedition.lcdui.rumand; import javax.microedition.lcdui.rumandListener; import javax.microedition.lcdui.Display; import javax.microedition.lcdui.Displayable; import javax.microedition.lcdui.Form; import javax.microedition.lcdui.StringItem; import javax.microedition.lcdui.TextField; import javax.microedition.midlet.MIDlet; import javax.microedition.midlet.MIDletStateChangeException; public class HttpMIDlet extends MIDlet implements CommandListener, Runnable {

 private Display display;
 private Form addressForm = new Form("HTTP Client");
 private Form connectForm = new Form("Connecting");
 private Form displayForm = new Form("Server Reply");
 private TextField serverURL = new TextField("URL:", "", 256, TextField.ANY);
 private StringItem messageLabel = new StringItem(null, "Connecting...\nPlease wait.");
 private Command okCommand = new Command("OK", Command.OK, 0);
 private Command exitCommand = new Command("Exit", Command.EXIT, 0);
 private Command backCommand = new Command("Back", Command.BACK, 0);
 
 protected void startApp() throws MIDletStateChangeException {
   display = Display.getDisplay(this);
   addressForm.append(serverURL);
   addressForm.addCommand(okCommand);
   addressForm.addCommand(exitCommand);
   addressForm.setCommandListener(this);
   connectForm.append(messageLabel);
   connectForm.addCommand(backCommand);
   connectForm.setCommandListener(this);
   displayForm.append(messageLabel);
   displayForm.addCommand(backCommand);
   displayForm.setCommandListener(this);
   display.setCurrent(addressForm);
 }
 protected void pauseApp() {
 }
 protected void destroyApp(boolean unconditional)
     throws MIDletStateChangeException {
 }
 public void commandAction(Command cmd, Displayable d) {
   if (cmd == okCommand) {
     Thread t = new Thread(this);
     t.start();
     display.setCurrent(connectForm);
   } else if (cmd == backCommand) {
     display.setCurrent(addressForm);
   } else if (cmd == exitCommand) {
     try {
       destroyApp(true);
     } catch (MIDletStateChangeException ex) {
     }
     notifyDestroyed();
   }
 }
 public void run() {
   InputStream is = null;
   HttpConnection conn = null;
   try {
     String url = serverURL.getString();
     if (!url.startsWith("http://") && !url.startsWith("https://")) {
       url = "http://" + url;
     }
     conn = (HttpConnection) Connector.open(url, Connector.READ_WRITE);
     if (conn.getResponseCode() == HttpConnection.HTTP_OK) {
       is = conn.openInputStream();
       final int MAX_LENGTH = 128;
       byte[] buf = new byte[MAX_LENGTH];
       int total = 0;
       while (total < MAX_LENGTH) {
         int count = is.read(buf, total, MAX_LENGTH - total);
         if (count < 0) {
           break;
         }
         total += count;
       }
       is.close();
       String reply = new String(buf, 0, total);
       messageLabel.setText(reply);
     } else {
       messageLabel.setText("Failed: error " + conn.getResponseCode() + "\n"+ conn.getResponseMessage());
     }
     conn.close();
     display.setCurrent(displayForm);
   } catch (IOException ex) {
     System.out.println(ex);
     ex.printStackTrace();
     Alert alert = new Alert("I/O Error","An error occurred while communicating with the server.", null,AlertType.ERROR);
     alert.setTimeout(Alert.FOREVER);
     display.setCurrent(alert, addressForm);
     return;
   }
 }

}

 </source>
   
  
 
  



HttpConnection: setRequestProperty(String key, String value) throws IOException

   <source lang="java">

import java.io.IOException; import java.io.InputStream; import javax.microedition.io.Connector; import javax.microedition.io.HttpConnection; import javax.microedition.lcdui.Alert; import javax.microedition.lcdui.rumand; import javax.microedition.lcdui.rumandListener; import javax.microedition.lcdui.Display; import javax.microedition.lcdui.Displayable; import javax.microedition.lcdui.Form; import javax.microedition.midlet.MIDlet; public class CookieMIDlet extends MIDlet implements CommandListener, Runnable {

 private Display mDisplay;
 private Form mForm;
 private String mSession;
 public void startApp() {
   mDisplay = Display.getDisplay(this);
   mForm = new Form("CookieMIDlet");
   mForm.addCommand(new Command("Exit", Command.EXIT, 0));
   mForm.addCommand(new Command("Send", Command.SCREEN, 0));
   mForm.setCommandListener(this);

   mDisplay.setCurrent(mForm);
 }
 public void pauseApp() {
 }
 public void destroyApp(boolean unconditional) {
 }
 public void commandAction(Command c, Displayable s) {
   if (c.getCommandType() == Command.EXIT)
     notifyDestroyed();
   else {
     Form waitForm = new Form("Connecting...");
     mDisplay.setCurrent(waitForm);
     Thread t = new Thread(this);
     t.start();
   }
 }
 public void run() {
   String url = getAppProperty("CookieMIDlet-URL");
   try {
     HttpConnection hc = (HttpConnection) Connector.open(url);
     if (mSession != null)
       hc.setRequestProperty("cookie", mSession);
     InputStream in = hc.openInputStream();
     String cookie = hc.getHeaderField("Set-cookie");
     if (cookie != null) {
       int semicolon = cookie.indexOf(";");
       mSession = cookie.substring(0, semicolon);
     }
     int length = (int) hc.getLength();
     byte[] raw = new byte[length];
     in.read(raw);
     String s = new String(raw);
     Alert a = new Alert("Response", s, null, null);
     a.setTimeout(Alert.FOREVER);
     mDisplay.setCurrent(a, mForm);
     in.close();
     hc.close();
   } catch (IOException ioe) {
     Alert a = new Alert("Exception", ioe.toString(), null, null);
     a.setTimeout(Alert.FOREVER);
     mDisplay.setCurrent(a, mForm);
   }
 }

}

 </source>
   
  
 
  



InputConnection: openInputStream() throws IOException

   <source lang="java">

import java.io.DataInputStream; import java.io.IOException; import javax.microedition.io.Connector; import javax.microedition.io.HttpConnection; import javax.microedition.lcdui.rumand; import javax.microedition.lcdui.rumandListener; import javax.microedition.lcdui.Display; import javax.microedition.lcdui.Displayable; import javax.microedition.lcdui.Form; import javax.microedition.lcdui.StringItem; import javax.microedition.lcdui.TextField; import javax.microedition.midlet.MIDlet; public class HttpGETMIDlet extends MIDlet implements CommandListener {

 private Command exitCommand = new Command("Exit", Command.EXIT, 1);
 private Command sendCommand = new Command("Send", Command.OK, 1);
 private Command backCommand = new Command("Upload", Command.OK, 1);
 private Display display;
 private String defaultURL = "http://localhost/JIDCA/hello.asp?name=JIDCA";
 private Form mainForm, resultForm;
 private TextField URL = new TextField(null, defaultURL, 250, TextField.URL);
 private StringItem resultItem;
 public HttpGETMIDlet() {
   display = Display.getDisplay(this);
 }
 public void startApp() {
   mainForm = new Form("Address");
   mainForm.append(URL);
   mainForm.addCommand(sendCommand);
   mainForm.addCommand(exitCommand);
   mainForm.setCommandListener(this);
   display.setCurrent(mainForm);
 }
 public void pauseApp() {
 }
 public void destroyApp(boolean unconditional) {
 }
 public void commandAction(Command c, Displayable s) {
   if (c == sendCommand) {
     String result = "";
     resultItem = new StringItem(null, result);
     resultForm = new Form("Result");
     String URLString = URL.getString();
     try {
       result = requestUsingGET(URLString);
     } catch (IOException e) {
       result = "Falied";
     }
     resultItem.setText(result);
     resultForm.append(resultItem);
     resultForm.addCommand(backCommand);
     resultForm.setCommandListener(this);
     display.setCurrent(resultForm);
   } else if (c == backCommand) {
     URL.setString(defaultURL);
     display.setCurrent(mainForm);
   } else {
     destroyApp(false);
     notifyDestroyed();
   }
 }
 private String requestUsingGET(String URLString) throws IOException {
   HttpConnection hpc = null;
   DataInputStream dis = null;
   boolean newline = false;
   String content = "";
   try {
     hpc = (HttpConnection) Connector.open(URLString);
     dis = new DataInputStream(hpc.openInputStream());
     int character;
     while ((character = dis.read()) != -1) {
       if ((char) character == "\\") {
         newline = true;
         continue;
       } else {
         if ((char) character == "n" && newline) {
           content += "\n";
           newline = false;
         } else if (newline) {
           content += "\\" + (char) character;
           newline = false;
         } else {
           content += (char) character;
           newline = false;
         }
       }
     }
     if (hpc != null)
       hpc.close();
     if (dis != null)
       dis.close();
   } catch (IOException e2) {
   }
   return content;
 }

}

 </source>