J2ME error when building application

[Kenneth Blane]

Hi all,

I'm a new developer - straight out of college, and not entirely sure on what i am doing

Please could you help me with the following error - i am suppose to write an app which selects an image from the phone directory(that works) and then email this image to a pre-specified email address. When i build my application it gives me the following error:

Error preverifying class java.lang.Class
VERIFIER ERROR java/lang/Class.newInstance0()Ljava/lang/Object;:
Illegal type in constant pool

Do you need to see the code?


Thank you in advance



HERE IS MY CODE

 

package RQPS2;

//import java.util.*;
//import newpackage.EmailImage;
import java.io.*;
//import javaapplication2.EmailImage;
import java.util.Enumeration;
import javax.microedition.io.*;
import javax.microedition.io.file.*;
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;

import java.util.Properties.*;
import java.util.Properties;
import javax.mail.*;
import javax.mail.internet.*;
import javax.activation.*;
import java.util.Map.*;


public class FileMidlet extends MIDlet implements CommandListener 
{
  private String currDirName;

  private Command view = new Command("View", Command.ITEM, 1);
  private Command back = new Command("Back", Command.BACK, 2);
  private Command exit = new Command("Exit", Command.EXIT, 3);
  
  private Form form = new Form("Selected Image");
  
  private final static String UP_DIRECTORY = "..";
  private final static String MEGA_ROOT = "/";
  private final static String SEP_STR = "/";
  private final static char   SEP = '/';
  
  Image pic = null;
  ImageItem picT = null;
  
  static boolean sending;
  static String[] str;
  String contentType = "text/html";
  
  public FileMidlet() 
  {
    currDirName = MEGA_ROOT;
    System.out.println("check 1" + currDirName);
  }

  public void startApp() 
  {
    boolean isAPIAvailable = false;
    if (System.getProperty(
      "microedition.io.file.FileConnection.version") != null)
    {
      isAPIAvailable = true;
      try 
      {
        showCurrDir();
      } 
      catch (SecurityException e) 
      {} 
      catch (Exception e) {}
      }
    else
    {
      StringBuffer splashText = new StringBuffer(
        getAppProperty("MIDlet-Name")).append("\n").append(
        getAppProperty("MIDlet-Vendor")).
        append(isAPIAvailable?"":"\nFileConnection API not available");
      Alert splashScreen = new Alert(null,splashText.toString(),
        null,AlertType.INFO);
      splashScreen.setTimeout(3000);
      Display.getDisplay(this).setCurrent(splashScreen);
    }
    
  }

  public void pauseApp() {}

  public void destroyApp(boolean cond) 
  {
    notifyDestroyed();
  }

  public void commandAction(Command c, Displayable d) 
  {
    if (c == view) 
    {
      List curr = (List)d;
      final String currFile = curr.getString(curr.getSelectedIndex());
      new Thread(new Runnable() 
      {
        public void run() 
        {
          if (currFile.endsWith(SEP_STR) || 
            currFile.equals(UP_DIRECTORY)) 
          {
            traverseDirectory(currFile);
          } else 
          {
            showFile(currFile);
          }
        }
      }).start();
    }
    else if (c == back) 
    {
      showCurrDir();
    } 
    else if (c == exit) 
    {
      destroyApp(false);
    }
  }

  void showCurrDir() 
  {
    Enumeration e;
    FileConnection currDir = null;
    List browser;
    try 
    {
      if (MEGA_ROOT.equals(currDirName)) 
      {
        System.out.println("check 2" + currDirName);
        e = FileSystemRegistry.listRoots();
        browser = new List(currDirName, List.IMPLICIT);
      } 
      else 
      {
        currDir = (FileConnection)Connector.open(
          "file://localhost/" + currDirName);
        e = currDir.list();
        browser = new List(currDirName, List.IMPLICIT);
        browser.append(UP_DIRECTORY, null);
        System.out.println("check 4" + currDirName);
      }
      while (e.hasMoreElements()) 
      {
        System.out.println("check 5" + currDirName);
        String fileName = (String)e.nextElement();
        if (fileName.charAt(fileName.length()-1) == SEP) 
        {
          browser.append(fileName, null);
        } 
        else 
        {
          browser.append(fileName, null);
        }
        System.out.println("check 6" + fileName);
      }
      browser.setSelectCommand(view);
      browser.addCommand(exit);
      browser.setCommandListener(this);
      if (currDir != null) 
      {
        currDir.close();
      }
      Display.getDisplay(this).setCurrent(browser);
    } 
    catch (IOException ioe) 
    {}
  }
  
  void traverseDirectory(String fileName) 
  {
    if (currDirName.equals(MEGA_ROOT)) 
    {
        System.out.println("check 7" + fileName);
      if (fileName.equals(UP_DIRECTORY)) 
      {
          System.out.println("check 8" + fileName);
        // can not go up from MEGA_ROOT
        return;
      }
      currDirName = fileName;
    } 
    else if (fileName.equals(UP_DIRECTORY)) 
    {
      // Go up one directory
      // TODO use setFileConnection when implemented
      int i = currDirName.lastIndexOf(SEP, currDirName.length()-2);
      if (i != -1) 
      {
        currDirName = currDirName.substring(0, i+1);
      } 
      else 
      {
        currDirName = MEGA_ROOT;
      }
    } 
    else 
    {
      currDirName = currDirName + fileName;
    }
    showCurrDir();
  }
  
  void showFile(String fileName) 
  {
    try 
    {
      FileConnection fc = (FileConnection)
      Connector.open("file://localhost/" + currDirName + fileName);
      if (!fc.exists()) 
      {
        throw new IOException("File does not exists");
      }
      InputStream fis = fc.openInputStream();
      byte[] b = new byte[1024];
      int length = fis.read(b, 0, 1024);
      fis.close();
      fc.close();
      System.out.println("check 2A \n 1024: " + 1024 +
                "\n fis: " + fis + "\n byte: " + b + " ");
      //EmailImage x;
      boolean send = false;
       try {
          pic = Image.createImage("/" + fileName);
          picT = new ImageItem("", pic, ImageItem.LAYOUT_CENTER, "ppp");
          
          send = sending( fileName);
       }
        catch (IOException e) {
          e.printStackTrace();
          System.out.println("ERROR: " + e);
          System.err.println("EXCEPTION: Failed loading images!");
        }
      if (send == true){
          Alert a = new Alert("Picture sent successfully");
          destroyApp(true);
      } else {
          Alert a = new Alert("Sending failed, please retry");
          destroyApp(true);
      }
      //TextBox tb = new TextBox("View File: " + fileName, null, 1024,
          //TextField.ANY | TextField.UNEDITABLE);
      System.out.println("check 3" );//+ tb.getTitle());
      //tb.addCommand(back);
      //tb.addCommand(exit);
      //tb.setCommandListener(this);
      form.append(picT);
      form.addCommand(back);
      form.addCommand(exit);
      form.setCommandListener(this);

      //if (length > 0) 
      //{
      //  tb.setString(new String(b, 0, length));
      //}
      Display.getDisplay(this).setCurrent(form);
    }
    catch (Exception e) {}
  }
  
  public boolean sending(String file){
        
        str[0] = "192.168.10.201";
        str[1] = "[e-mail]";
        str[2] = "[e-mail]";
        str[3] = file;
        
        //Properties props = System.getProperties();
        Properties props = new Properties();
        props.put("mail.smtp.host", str[0]);
        
        try {
            Session session = Session.getDefaultInstance(props, null);
            MimeMessage message = new MimeMessage(session);
            
            message.setSubject("123456");
            message.setFrom(new InternetAddress(str[2]));
            message.addRecipient(Message.RecipientType.TO, new InternetAddress(str[1]));
            
            BodyPart messageBP = new MimeBodyPart();
            messageBP.setText("");
            Multipart multipart = new MimeMultipart();
            multipart.addBodyPart(messageBP);
            
            messageBP = new MimeBodyPart();
            DataSource source = new FileDataSource(str[3]);
            messageBP.setDataHandler(new DataHandler(source));
            messageBP.setFileName(str[3]);
            
            multipart.addBodyPart(messageBP);
            
            message.setContent(multipart);
            
            Transport.send(message);
            sending = true;
        } catch(MessagingException me){
            sending = false;
            System.out.println("FAILED: Not connected");
        }
        if(sending == true){
            System.out.println("message sent successfully");
            return true;
        }else {
            System.out.println("message sending failed");
            return false;
        }
    }
} 

[Peter Miklosko]

Any chance of you making mistake as the guy in this post

If not, we will need to see your code

[Kenneth Blane]

Hi,

I have advanced with this app - i have put the clientside in the MIDlet but have moved the email section to a normal java app. i have imported the java app into the me app and when i build the apps i get the following error:

Error preverifying class a
VERIFIER ERROR a.a(Ljava/lang/String;I)Z:
Cannot find class javax/mail/Message

Here is my code - i have sifted through it line by line and commented out the lines that cause the error to be thrown.

Please could you advise me on what to do??

CLIENT CODE (MIDLET)

 package hello;

import java.io.*;
import java.util.Enumeration;
import javax.microedition.io.*;
import javax.microedition.io.file.*;
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;

import sendemail.Main;

public class FileMidlet extends MIDlet implements CommandListener 
{
  private String currDirName;

  private Command view = new Command("View", Command.ITEM, 1);
  private Command back = new Command("Back", Command.BACK, 2);
  private Command exit = new Command("Exit", Command.EXIT, 3);
  private Command submit = new Command("View", Command.OK, 1);
  
  private Form form = new Form("Selected Image");
  
  private final static String UP_DIRECTORY = "..";
  private final static String MEGA_ROOT = "/";
  private final static String SEP_STR = "/";
  private final static char   SEP = '/';
  
  Image pic = null;
  ImageItem picT = null;
  
  int x = 0;
  boolean sent;
  String[] str;
  String contentType = "text/html";
  String file = "";
  
  public FileMidlet() 
  {
    currDirName = MEGA_ROOT;
    System.out.println("check 1" + currDirName);
  }

  public void startApp() 
  {
    boolean isAPIAvailable = false;
    if (System.getProperty(
      "microedition.io.file.FileConnection.version") != null)
    {
      isAPIAvailable = true;
      try 
      {
        showCurrDir();
      } 
      catch (SecurityException e) 
      {} 
      catch (Exception e) {}
      }
    else
    {
      StringBuffer splashText = new StringBuffer(
        getAppProperty("MIDlet-Name")).append("\n").append(
        getAppProperty("MIDlet-Vendor")).
        append(isAPIAvailable?"":"\nFileConnection API not available");
      Alert splashScreen = new Alert(null,splashText.toString(),
        null,AlertType.INFO);
      splashScreen.setTimeout(3000);
      Display.getDisplay(this).setCurrent(splashScreen);
    }
    
  }

  public void pauseApp() {}

  public void destroyApp(boolean cond) 
  {
    notifyDestroyed();
  }

  public void commandAction(Command c, Displayable d) 
  {
    if (c == view) 
    {
      List curr = (List)d;
      final String currFile = curr.getString(curr.getSelectedIndex());
      new Thread(new Runnable() 
      {
        public void run() 
        {
          if (currFile.endsWith(SEP_STR) || 
            currFile.equals(UP_DIRECTORY)) 
          {
            traverseDirectory(currFile);
          } else 
          {
            showFile(currFile);
          }
        }
      }).start();
    }
    else if (c == back) 
    {
      showCurrDir();
    }
    else if (c == submit) 
    {
        sent = Main.sending(file, x);
      //showCurrDir();
    }
    else if (c == exit) 
    {
      ending(sent);
      //destroyApp(false);
    }
  }

  void showCurrDir() 
  {
    Enumeration e;
    FileConnection currDir = null;
    List browser;
    try 
    {
      if (MEGA_ROOT.equals(currDirName)) 
      {
        System.out.println("check 2" + currDirName);
        e = FileSystemRegistry.listRoots();
        browser = new List(currDirName, List.IMPLICIT);
      } 
      else 
      {
        currDir = (FileConnection)Connector.open(
          "file://localhost/" + currDirName);
        e = currDir.list();
        browser = new List(currDirName, List.IMPLICIT);
        browser.append(UP_DIRECTORY, null);
        System.out.println("check 4" + currDirName);
      }
      while (e.hasMoreElements()) 
      {
        x++;
        System.out.println("check 5" + currDirName);
        String fileName = (String)e.nextElement();
        if (fileName.charAt(fileName.length()-1) == SEP) 
        {
          browser.append(fileName, null);
        } 
        else 
        {
          browser.append(fileName, null);
        }
        System.out.println("check 6" + fileName);
      }
      browser.setSelectCommand(view);
      browser.addCommand(exit);
      browser.setCommandListener(this);
      if (currDir != null) 
      {
        currDir.close();
      }
      Display.getDisplay(this).setCurrent(browser);
    } 
    catch (IOException ioe) 
    {}
  }
  
  void traverseDirectory(String fileName) 
  {
    if (currDirName.equals(MEGA_ROOT)) 
    {
        System.out.println("check 7" + fileName);
      if (fileName.equals(UP_DIRECTORY)) 
      {
          System.out.println("check 8" + fileName);
        // can not go up from MEGA_ROOT
        return;
      }
      currDirName = fileName;
    } 
    else if (fileName.equals(UP_DIRECTORY)) 
    {
      // Go up one directory
      // TODO use setFileConnection when implemented
      int i = currDirName.lastIndexOf(SEP, currDirName.length()-2);
      if (i != -1) 
      {
        currDirName = currDirName.substring(0, i+1);
      } 
      else 
      {
        currDirName = MEGA_ROOT;
      }
    } 
    else 
    {
      currDirName = currDirName + fileName;
    }
    showCurrDir();
  }
  
  void showFile(String fileName) 
  {
    try 
    {
      FileConnection fc = (FileConnection)
      Connector.open("file://localhost/" + currDirName + fileName);
      if (!fc.exists()) 
      {
        throw new IOException("File does not exists");
      }
      InputStream fis = fc.openInputStream();
      byte[] b = new byte[1024];
      int length = fis.read(b, 0, 1024);
      fis.close();
      fc.close();
      System.out.println("check 2A \n 1024: " + 1024 +
                "\n fis: " + fis + "\n byte: " + b + " ");
      //EmailImage x;
      //boolean send = false;
       try {
          System.out.println("*************file://localhost/" + currDirName + fileName);
          pic = Image.createImage("/" + fileName);
          System.out.println("ZERO ZERO ZERO file://localhost/" + currDirName + fileName);
          picT = new ImageItem("", pic, ImageItem.LAYOUT_CENTER, "ppp");
          System.out.println("ONE ONE ONE" + x + " "+ fileName);
          file = fileName;
          System.out.println("TWO TWO TWO");
          form.append(picT);
          form.addCommand(back);
          form.addCommand(submit);
          form.setCommandListener(this);

          Display.getDisplay(this).setCurrent(form);
       }
        catch (IOException e) {
          e.printStackTrace();
          System.out.println("ERROR: " + e);
          System.err.println("EXCEPTION: Failed loading images!");
        }
      System.out.println("THREE THREE THREE");
      
      System.out.println("check 3" );//+ tb.getTitle());
      
      
    }
    catch (Exception e) {}
  }
  
  public void ending(boolean result) {
      Alert a;
      if (result == true){
          a = new Alert("EMAIL", "Picture sent successfully", null, AlertType.INFO);
      } else {
          a = new Alert("EMAIL", "Picture not sent", null, AlertType.INFO);
      }
          a.setTimeout(Alert.FOREVER);
      Display.getDisplay(this).setCurrent(a);
      destroyApp(true);
  }
  
}    

EMAIL SIDE (NORMAL JAVA SE APP) - this is where the errors are being thrown from

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

package sendemail;

/**
 *
 * @author kennethb
 */

import java.util.Properties.*;
import java.util.Properties;
import javax.mail.*;
import javax.mail.Address.*;
import javax.mail.internet.*;
import javax.activation.*;
import java.util.Map.*;

public class Main {
    
    static String[] str;
    static boolean sending = false;
    /**
     * @param args the command line arguments
     */
       
    public static boolean sending(String file, int x){
        str = new String[x];
        str[0] = "192.168.10.201";
        str[1] = "[e-mail]";
        str[2] = "[e-mail]";
        str[3] = file;
        System.out.println(str[3]);

        Properties props = new Properties();
        props.put("mail.smtp.host", str[0]);

        try {
            Session session = Session.getDefaultInstance(props, null);
            MimeMessage message = new MimeMessage(session);

            message.setSubject("123456");
//            message.setFrom(new InternetAddress(str[2]));
//            message.addRecipient(Message.RecipientType.TO, new InternetAddress(str[1]));

            BodyPart messageBP = new MimeBodyPart();
//            messageBP.setText("");
            Multipart multipart = new MimeMultipart();
//            multipart.addBodyPart(messageBP);

            messageBP = new MimeBodyPart();
            DataSource source = new FileDataSource(str[3]);
//            messageBP.setDataHandler(new DataHandler(source));
//            messageBP.setFileName(str[3]);

//            multipart.addBodyPart(messageBP);

//            message.setContent(multipart);

            Transport.send(message);
        } catch(MessagingException me){
//          } catch(Exception me){
            sending = false;
            System.out.println("FAILED: Not connected");
        }
        if(sending == true){
            System.out.println("message sent");
            return true;
        }else {
            System.out.println("message sneding failed");
            return false;
        }
    }
    
}