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How to write a MIDlet to invoke a CGI script E-mail
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This example shows how to write a midlet which can invoke CGI scripts.

/* License
 
 * Copyright 1994-2004 Sun Microsystems, Inc. All Rights Reserved.
 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *  
 *  * Redistribution of source code must retain the above copyright notice,
 *      this list of conditions and the following disclaimer.
 
 *  * Redistribution in binary form must reproduce the above copyright notice,
 *      this list of conditions and the following disclaimer in the
 *      documentation and/or other materials provided with the distribution.
 
 * Neither the name of Sun Microsystems, Inc. or the names of contributors
 * may be used to endorse or promote products derived from this software
 * without specific prior written permission.
 *  
 * This software is provided "AS IS," without a warranty of any kind. ALL
 * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING
 * ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE
 * OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN MICROSYSTEMS, INC. ("SUN")
 * AND ITS LICENSORS SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE
 * AS A RESULT OF USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS
 * DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR ANY LOST
 * REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL,
 * INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY
 * OF LIABILITY, ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE,
 * EVEN IF SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
 *  
 * You acknowledge that this software is not designed, licensed or intended
 * for use in the design, construction, operation or maintenance of any
 * nuclear facility. 
 */

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

/**
 * An example MIDlet to invoke a CGI script.
 */

public class FirstMidletServlet extends MIDlet {

    private Display display;
    String url = "http://developer.java.sun.com/servlet/HelloServlet";

    public FirstMidletServlet() {
       display = Display.getDisplay(this);
    }

    /**
     * Initialization. Invoked when we activate the MIDlet.
     */
    public void startApp() {
  try {
            invokeServlet(url);
  catch (IOException e) {
      System.out.println("IOException " + e);
      e.printStackTrace();
  }
    }

    /**
     * Pause, discontinue ....
     */
    public void pauseApp() {
    }

    /**
     * Destroy must cleanup everything.
     */
    public void destroyApp(boolean unconditional) {
    }

    /**
     * Prepare connection and streams then invoke servlet.
     */

     void invokeServlet(String urlthrows IOException {
        HttpConnection c = null;
        InputStream is = null;
        StringBuffer b = new StringBuffer();
        TextBox t = null;
        try {
          c = (HttpConnection)Connector.open(url);
          c.setRequestMethod(HttpConnection.GET);
          c.setRequestProperty("IF-Modified-Since""20 Jan 2001 16:19:14 GMT");
          c.setRequestProperty("User-Agent","Profile/MIDP-1.0 Configuration/CLDC-1.0");
          c.setRequestProperty("Content-Language""en-CA");
          is = c.openDataInputStream();
          int ch;
          while ((ch = is.read()) != -1) {
            b.append((charch);
            //System.out.println((char)ch);
          }
          t = new TextBox("First Servlet", b.toString()10240);
        finally {
           if(is!= null) {
              is.close();
           }
           if(c != null) {
              c.close();
           }
        }
        display.setCurrent(t);
    }
}

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