Problem with sending emails using JavaMail (ClassFormatError)

[Marek Krokosinski]

Hello.

I want to send e-mail through my app. I don't use any server application, I'm just compiling it with Netbeans.

User should fill the form and press the "wyslij" button, then the subject, "from who" and message goes to constructor of "wyslijEmail" class and it should send the email with those 3 variables.

This is my form (this is only a part of app - and sorry for non english names of methods and variables):

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

import java.util.Properties;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;




import java.awt.Color;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.*;
import javax.swing.border.Border;
import javax.swing.border.LineBorder;
import net.miginfocom.swing.MigLayout;
import start.ShowImage;

/**
 *
 * @author Mtk
 */
public class PanelKontakt extends PanelOjciec {
    private ImageIcon icon;
    private MigLayout ml;
    private Font czcionka;
    private JLabel kontaktJL, wyslijDoJL, imieNazwiskoJL, tematJL, trescWiadomosciJL;
    private JTextField wyslijDoJTX, imieNazwiskoJTF, tematJTX;
    private JTextArea wiadomoscJTA;
    private ShowImage si;
    private Border border;
    JButton wyczysc, wyslij;
    public PanelKontakt(){
        super();
        initComponents();
    }

    private void initComponents() {
        wyslij = new JButton();
        ml = new MigLayout(
                "insets 10 50 10 0",
                "[]10[]10[]",
                "[]5[]20[]10[]10[]10[]20[]");
        setLayout(ml);
        
        add(setLabel(kontaktJL, "Kontakt", 40), "cell 0 0 3 1, gapleft 30");
        si = new ShowImage("images/linia828x11.png");
        add(si, "cell 0 1 3 1");
        
        //adding JLabels
        add(setLabel(wyslijDoJL,        "Do:",              20), "cell 0 2, gapleft 111");
        add(setLabel(imieNazwiskoJL,    "Imię i Nazwisko:", 20), "cell 0 3");
        add(setLabel(tematJL,           "Temat: ",          20), "cell 0 4, gapleft 80");
        add(setLabel(trescWiadomosciJL, "Wiadomość:",       20), "cell 0 5, gapleft 33");
        //Dodawanie pól tekstowych
        add(setJTF(wyslijDoJTX, "Wybierz odbiorce wiadomości...", 18), "cell 1 2");
        
        //"from who" settings
        imieNazwiskoJTF = new JTextField("Wpisz swoje imię i nazwisko");
        czcionka = new Font("SansSerif", 0, 18);
        imieNazwiskoJTF.setVisible(true);
        imieNazwiskoJTF.setFont(czcionka);
        imieNazwiskoJTF.setMinimumSize(new Dimension(500, 30));
        add(imieNazwiskoJTF, "cell 1 3");
        
        //Subject settings
        tematJTX = new JTextField("Wpisz temat wiadomości...");
        czcionka = new Font("SansSerif", 0, 18);
        tematJTX.setVisible(true);
        tematJTX.setFont(czcionka);
        tematJTX.setMinimumSize(new Dimension(500, 30));
        add(tematJTX, "cell 1 4");
        
        
        //textArea settings
        wiadomoscJTA = new JTextArea("Wpisz treść wiadomości");
        czcionka = new Font("SansSerif", 0, 18);
        wiadomoscJTA.setFont(czcionka);
        wiadomoscJTA.setMinimumSize(new Dimension(500, 100));
        wiadomoscJTA.setMaximumSize(new Dimension(500, 200));
        wiadomoscJTA.setPreferredSize(new Dimension(500, 150));
        border = new LineBorder(Color.black, 1);
        wiadomoscJTA.setBorder(border);
        add(wiadomoscJTA, "cell 1 5");
        
        add(setPrzycisk(wyczysc, "images/wyczysc.png"), "cell 1 7, gapleft 50");
        wyslij.setBorder(null);
        icon = new ImageIcon("images/wyslij.png");
        wyslij.setIcon(icon);
        add(wyslij, "cell 1 7, gapleft 100");
        // HERE is a button which should send email
        wyslij.addActionListener(new ActionListener() {

            @Override
            public void actionPerformed(ActionEvent e) {
                
                WyslijEmail wyslijMaila = new WyslijEmail(tematJTX.getText(), imieNazwiskoJTF.getText(), wiadomoscJTA.getText());
                
                
            }
        });
        
    }
    
      
    private JLabel setLabel(JLabel label, String tekst, int rozmiar){
        label = new JLabel(tekst);
        czcionka = new Font("SansSerif", 0, rozmiar);
        label.setFont(czcionka);
        return label;
    }
    private JTextField setJTF(JTextField jtf, String tekst, int rozmiar){
        jtf = new JTextField(tekst);
        
        czcionka = new Font("SansSerif", 0, rozmiar);
        jtf.setVisible(true);
        jtf.setFont(czcionka);
        jtf.setMinimumSize(new Dimension(500, 30));
        return jtf;
    }
    private JButton setPrzycisk(JButton button, String adresObrazka){
        button = new JButton();
        button.setBorder(null);
        icon = new ImageIcon(adresObrazka);
        button.setIcon(icon);
            
        return button;
    }
    
    public String getTemat(){
        return tematJTX.getText();
    }
    public String getOdKogo(){
        return imieNazwiskoJTF.getText();
    }
    public String getWiadomosc(){
        return wiadomoscJTA.getText();
    }
    
}

And here is the class which is responsible for sending e-mails:

package start.zakladki;
import java.util.Properties;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;


public class WyslijEmail {

    public WyslijMaila(String tytul, String odKogo, String tekstWiadomosci){
                Properties props = new Properties();
		props.put("mail.smtp.host", "smtp.gmail.com");
		props.put("mail.smtp.socketFactory.port", "465");
		props.put("mail.smtp.socketFactory.class",
				"javax.net.ssl.SSLSocketFactory");
		props.put("mail.smtp.auth", "true");
		props.put("mail.smtp.port", "465");
 
		Session session = Session.getDefaultInstance(props,
			new javax.mail.Authenticator() {
				protected PasswordAuthentication getPasswordAuthentication() {
					return new PasswordAuthentication("login", "password");
				}
			});
 
		try {
 
			Message message = new MimeMessage(session);
			message.setFrom(new InternetAddress("[e-mail]"));
			message.setRecipients(Message.RecipientType.TO,
					InternetAddress.parse("[e-mail]"));  // recipient same as author only for testing
			message.setSubject(tytul);
			message.setText("Wiadomość od: "+odKogo+ "\n\n Treść wiadomości: \n\n"+tekstWiadomosci);
 
			Transport.send(message);
 
			System.out.println("Done");
 
		} catch (MessagingException e) {
			throw new RuntimeException(e);
		}
	}
    
    
    
}

When I press the wyslij button ive got an error:

debug:
Exception in thread "AWT-EventQueue-0" java.lang.ClassFormatError: Absent Code attribute in method that is not native or abstract in class file javax/mail/MessagingException
	at java.lang.ClassLoader.defineClass1(Native Method)
	at java.lang.ClassLoader.defineClassCond(ClassLoader.java:632)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:616)
	at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
	at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
	at java.net.URLClassLoader.access$000(URLClassLoader.java:58)
	at java.net.URLClassLoader$1.run(URLClassLoader.java:197)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
	at start.zakladki.PanelKontakt$1.actionPerformed(PanelKontakt.java:108)
	at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995)
	at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2318)
	at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387)
	at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242)
	at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:236)
	at java.awt.Component.processMouseEvent(Component.java:6289)
	at javax.swing.JComponent.processMouseEvent(JComponent.java:3267)
	at java.awt.Component.processEvent(Component.java:6054)
	at java.awt.Container.processEvent(Container.java:2041)
	at java.awt.Component.dispatchEventImpl(Component.java:4652)
	at java.awt.Container.dispatchEventImpl(Container.java:2099)
	at java.awt.Component.dispatchEvent(Component.java:4482)
	at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4577)
	at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4238)
	at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4168)
	at java.awt.Container.dispatchEventImpl(Container.java:2085)
	at java.awt.Window.dispatchEventImpl(Window.java:2478)
	at java.awt.Component.dispatchEvent(Component.java:4482)
	at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:644)
	at java.awt.EventQueue.access$000(EventQueue.java:85)
	at java.awt.EventQueue$1.run(EventQueue.java:603)
	at java.awt.EventQueue$1.run(EventQueue.java:601)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
	at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:98)
	at java.awt.EventQueue$2.run(EventQueue.java:617)
	at java.awt.EventQueue$2.run(EventQueue.java:615)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:614)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)
BUILD SUCCESSFUL (total time: 10 seconds)

I was looking something in google, but i found only answers to add dependency to pom.xml (in maven), but I don't use it so I can't add it there... I have also check that under Eclipse but it throws still the same error. Please give me a tip how to resolve that problem.

[Marek Krokosinski]

Umm nevermind now ! I found the solution. The problem was with javaee jars in class path. When i removed it the problem is gone.