Attachment Problem in JavaMail API

Question

Can anybody help me...
when 'm trying to attach a file to a mailing aplication(sending attachment),
an flurry of exceptions are occuring...
'm using win98 and JDK1.4
here is the code..can anybody provide a viable solution that works?
thanks in advance
* main1.java
* Created on August 20, 2002, 2:55 PM
* @author Shamik Ghosh
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import javax.swing.event.*;
import java.net.*;
import java.io.*;
import java.util.Properties;
import javax.mail.*;
import javax.mail.internet.*;
import javax.activation.*;
public class main1 extends javax.swing.JFrame implements ActionListener,ItemListener {
JMenuBar mbar;
JMenu file,other,help;
JMenuItem open,save,read_mail;
JFrame frame_f;
FileReader fr;
BufferedReader br;
boolean check;
String from_m,smtp_m,from_m1,smtp_m1,result,
s1,s2,from_server,from_host,to_file,which_file,attach_text;
File f;
/** Creates new form main1 */
public main1() {
initComponents();
setSize(550,500);
setResizable(false);
// ------------------------centering the display
int width=550; // note that "width" & "height" are keywords and
int height=500; // JAVA defined variables.
Dimension screen=Toolkit.getDefaultToolkit().getScreenSize();
int x=(screen.width-width)/2;
int y=(screen.height-height)/2;
setBounds(x,y,width,height);
try{
fr=new FileReader("address.txt");
br=new BufferedReader(fr);
String s;
while((s=br.readLine()) !=null)
{jComboBox1.addItem(s);}
fr.close();
}catch(Exception e){ System.out.println(e);}
check_info();//calling the method to check the info
//jTextField1.setText(from_m);
//jTextField3.setText(smtp_m);
/** This method is called from within the constructor to
* initialize the form.
* WARNING: Do NOT modify this code. The content of this method is
* always regenerated by the Form Editor.
private void initComponents() {//GEN-BEGIN:initComponents
buttonGroup1 = new javax.swing.ButtonGroup();
buttonGroup2 = new javax.swing.ButtonGroup();
jLabel1 = new javax.swing.JLabel();
jLabel2 = new javax.swing.JLabel();
jTextField1 = new javax.swing.JTextField();
jTextField2 = new javax.swing.JTextField();
jLabel3 = new javax.swing.JLabel();
jTextField3 = new javax.swing.JTextField();
jComboBox1 = new javax.swing.JComboBox();
jButton1 = new javax.swing.JButton();
jButton2 = new javax.swing.JButton();
jButton3 = new javax.swing.JButton();
jLabel4 = new javax.swing.JLabel();
jRadioButton3 = new javax.swing.JRadioButton();
jRadioButton4 = new javax.swing.JRadioButton();
jButton4 = new javax.swing.JButton();
jButton6 = new javax.swing.JButton();
jButton5 = new javax.swing.JButton();
jTextField4 = new javax.swing.JTextField();
jLabel5 = new javax.swing.JLabel();
jScrollPane1 = new javax.swing.JScrollPane();
jTextArea1 = new javax.swing.JTextArea();
jScrollPane2 = new javax.swing.JScrollPane();
jTextArea2 = new javax.swing.JTextArea();
jLabel6 = new javax.swing.JLabel();
jLabel7 = new javax.swing.JLabel();
jLabel8 = new javax.swing.JLabel();
jLabel9 = new javax.swing.JLabel();
jLabel10 = new javax.swing.JLabel();
//actionlisteners
jButton1.addActionListener(this);
jButton2.addActionListener(this);
jButton3.addActionListener(this);
jButton4.addActionListener(this);
jButton5.addActionListener(this);
jButton6.addActionListener(this);
mbar=new JMenuBar();
setJMenuBar(mbar);
file=new JMenu("File");
other=new JMenu("Other");
help=new JMenu("Help");
mbar.add(file);
mbar.add(other);
mbar.add(help);
getContentPane().setLayout(null);
setTitle("MailMan :Designed and Programmed by Shamik Ghosh");
//setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
addWindowListener(new java.awt.event.WindowAdapter() {
public void windowClosing(java.awt.event.WindowEvent evt) {
exitForm(evt);
jLabel1.setText("From:");
getContentPane().add(jLabel1);
jLabel1.setBounds(30, 20, 32, 17);
jLabel2.setText("To:");
getContentPane().add(jLabel2);
jLabel2.setBounds(30, 60, 17, 17);
getContentPane().add(jTextField1);
jTextField1.setBounds(110, 20, 240, 21);
getContentPane().add(jTextField2);
jTextField2.setBounds(110, 60, 240, 21);
jLabel3.setText("Smtp Server:");
getContentPane().add(jLabel3);
jLabel3.setBounds(10, 100, 74, 17);
getContentPane().add(jTextField3);
jTextField3.setBounds(110, 100, 240, 21);
jComboBox1.setModel(new javax.swing.DefaultComboBoxModel(new String[] {  }));
jComboBox1.setToolTipText("Mail Addresses");
jComboBox1.setAutoscrolls(true);
jComboBox1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jComboBox1ActionPerformed(evt);
getContentPane().add(jComboBox1);
jComboBox1.setBounds(110, 150, 240, 20);
jComboBox1.setFont(new java.awt.Font("Abadi MT Condensed Light", 1, 12));
jButton1.setToolTipText("Send the message you have typed");
jButton1.setMnemonic('m');
jButton1.setFont(new java.awt.Font("Abadi MT Condensed Light", 1, 12));
jButton1.setText("Send Mail");
getContentPane().add(jButton1);
jButton1.setBounds(370, 300, 160, 25);
//jButton2.setFont(new java.awt.Font("Abadi MT Condensed Light", 0, 12));
jButton2.setText("Save Info");
jButton2.setToolTipText("Save Settings for more mails");
jButton2.setMnemonic('I');
getContentPane().add(jButton2);
jButton2.setBounds(370, 340, 160, 25);
jButton3.setText("Clear ");
jButton3.setMnemonic('C');
jButton3.setToolTipText("Clear all text");
getContentPane().add(jButton3);
jButton3.setBounds(370, 380, 160, 27);
jLabel4.setText("Your Contact Addresses");
jLabel4.setFont(new java.awt.Font("Arial Narrow", 0, 12));
getContentPane().add(jLabel4);
jLabel4.setBounds(110, 130, 200, 15);
jRadioButton3.setText("Use Log File");
jRadioButton3.setMnemonic('L');
getContentPane().add(jRadioButton3);
jRadioButton3.setBounds(260, 310, 90, 25);
jRadioButton4.setText("No Log File");
//jRadioButton4.setMnemonic('N');
//getContentPane().add(jRadioButton4);
//jRadioButton4.setBounds(260, 340, 86, 25);
jButton4.setText("Undo Info");
jButton4.setMnemonic('U');
jButton4.setToolTipText("Undo settings");
getContentPane().add(jButton4);
jButton4.setBounds(260, 380, 87, 27);
getContentPane().add(jTextField4);
jTextField4.setBounds(20, 380, 210, 21);
jLabel5.setText("Attachment");
jLabel5.setFont(new java.awt.Font("Abadi MT Condensed Light", 1, 12));
getContentPane().add(jLabel5);
jLabel5.setBounds(70, 360, 70, 15);
jButton5.setFont(new java.awt.Font("Abadi MT Condensed Light", 1, 12));
jButton5.setText("Browse");
jButton5.setMnemonic('B');
jButton5.setToolTipText("Browse files for Attachment");
getContentPane().add(jButton5);
jButton5.setBounds(150, 350, 80, 25);
jButton6.setText("Attach & Send");
jButton6.setMnemonic('A');
jButton6.setToolTipText("Attach File & Send Mail");
getContentPane().add(jButton6);
jButton6.setBounds(260, 340, 86, 25);
jScrollPane1.setViewportView(jTextArea1);
getContentPane().add(jScrollPane1);
jScrollPane1.setBounds(370, 20, 160, 270);
jLabel10.setText("Type your mail:");
jLabel10.setFont(new java.awt.Font("Abadi MT Condensed Light", 1, 12));
getContentPane().add(jLabel10);
jLabel10.setBounds(370, 5, 125, 10);
jScrollPane2.setViewportView(jTextArea2);
getContentPane().add(jScrollPane2);
jScrollPane2.setBounds(20, 200, 340, 90);
jLabel6.setText("(your ISP smtp)");
jLabel6.setFont(new java.awt.Font("Abadi MT Condensed Light", 0, 10));
getContentPane().add(jLabel6);
jLabel6.setBounds(10, 120, 70, 12);
jLabel7.setText("porgrammed and designed by : Shamik Ghosh");
jLabel7.setFont(new java.awt.Font("Abadi MT Condensed Light", 0, 10));
getContentPane().add(jLabel7);
jLabel7.setBounds(260, 410, 160, 12);
jLabel8.setText("[email protected]");
jLabel8.setFont(new java.awt.Font("Abadi MT Condensed Light", 0, 10));
getContentPane().add(jLabel8);
jLabel8.setBounds(420, 410, 80, 12);
jLabel9.setText("Msg.for the Mail Sent:");
jLabel9.setForeground(java.awt.Color.black);
jLabel9.setFont(new java.awt.Font("Abadi MT Condensed Light", 0, 10));
getContentPane().add(jLabel9);
jLabel9.setBounds(20, 180, 80, 12);
file.add(open=new JMenuItem("Open"));
open.setAccelerator(KeyStroke.getKeyStroke('O',Event.CTRL_MASK,true));
file.addSeparator();
file.add(save=new JMenuItem("Save"));
save.setAccelerator(KeyStroke.getKeyStroke('S',Event.CTRL_MASK,true));
file.addSeparator();
other.add(read_mail=new JMenuItem("Add Address"));
read_mail.setAccelerator(KeyStroke.getKeyStroke('A',Event.CTRL_MASK,true));
other.addSeparator();
//adding actionListener to menuitems
open.addActionListener(this);
save.addActionListener(this);
read_mail.addActionListener(this);
jComboBox1.addItemListener(this);
pack();
}//GEN-END:initComponents
public void itemStateChanged(ItemEvent ie)
String add_list;
add_list=String.valueOf(jComboBox1.getSelectedItem());
jTextField2.setText(add_list);
} // for item event source
public void actionPerformed(ActionEvent ae)
if(ae.getSource()==jButton1)
if(ae.getSource()==jButton1) {
SwingUtilities.invokeLater(new Runnable()
{  public void run()
sendMail();
if(ae.getSource()==jButton2) //save info
from_m =jTextField1.getText();
smtp_m =jTextField3.getText();
from_m1 =from_m+"\n";
smtp_m1 =jTextField3.getText();
result =from_m1+smtp_m1;
try{
byte buf[]=result.getBytes();
OutputStream fo=new FileOutputStream("info.txt");
for(int i=0;i<buf.length; i++ )
fo.write(buf);
fo.close();
}catch(Exception e){ System.out.println(e);}
jTextField1.setEditable(false);
jTextField3.setEditable(false);
if(ae.getSource()==jButton3) //clear
jTextArea1.setText(" ");
jTextArea2.setText(" ");
if(ae.getSource()==jButton4)//undo info
jTextField1.setEditable(true);
jTextField3.setEditable(true);
if(ae.getSource()==jButton5)//browse for attachment
try {
FileDialog file = new FileDialog (main1.this, "Load File", FileDialog.LOAD);
file.setFile ("*.*"); // Set initial filename filter
file.show(); // Blocks
String curFile;
if ((curFile = file.getFile()) != null) {
String filename = file.getDirectory() + curFile;
char[] data;
setCursor (Cursor.getPredefinedCursor(Cursor.WAIT_CURSOR));
f = new File (filename);
try {
System.out.println("INSIDE TRY");
FileReader fin = new FileReader (f);
int filesize = (int)f.length();
data = new char[filesize];
fin.read (data, 0, filesize);
setCursor (Cursor.getPredefinedCursor(Cursor.DEFAULT_CURSOR));
} catch (Exception exc) {}
jTextField4.setText(filename);
} catch(Exception e){}
if(ae.getSource()==jButton6)//send attachment & Mail
try{
sendmail2();
}catch(Exception e){}
if(ae.getSource()==open)//menu open
if(ae.getSource()==save)//menu save
if(ae.getSource()==read_mail)//menu read_mail
address_add();
} //actionperformed
public void sendmail2()
try {
//which_file,attach_text
from_server=jTextField3.getText();
from_host=jTextField1.getText();
to_file=jTextField2.getText();
which_file=jTextField4.getText();
attach_text=jTextArea1.getText();
//getting system property
Properties props=System.getProperties();
//setup mail server
props.put("mail.smtp.host",from_server);
//get session
Session session=Session.getInstance(props,null);
// Define message
Message message = new MimeMessage(session);
message.setFrom(new InternetAddress(from_host));
message.addRecipient(Message.RecipientType.TO,
new InternetAddress(to_file));
message.setSubject("Hello JavaMail Attachment");
//define message part
BodyPart messageBodyPart=new MimeBodyPart();
// Fill the message
messageBodyPart.setText(attach_text);
// Create a Multipart
Multipart multipart = new MimeMultipart();
// Add part one
multipart.addBodyPart(messageBodyPart);
//attaching**********************************secon Part Attachment
//creating second body part
messageBodyPart=new MimeBodyPart();
DataSource source=new FileDataSource(which_file); //was filename
//setting data handler to the attachment
messageBodyPart.setDataHandler(new DataHandler(source));
//setting the filename
messageBodyPart.setFileName(which_file);
//adding part two
multipart.addBodyPart(messageBodyPart);
//put parts in the message
message.setContent(multipart);
//Sending msg
Transport.send(message);
}catch(Exception e){}
} //sendmail2
public void address_add()
addr=jTextField2.getText();
str_addr=addr+"\n";
//jComboBox1.addItem(" ");
jComboBox1.addItem(addr);
System.out.println("INSIDE WRITING METHOD");
try{
byte buf[]=str_addr.getBytes();
OutputStream f0=new FileOutputStream("address.txt",true);
for(int i=0;i<buf.length; i++ )
f0.write(buf[i]);
f0.close();
}catch(Exception e){ System.out.println(e);}
public void check_info()
try{
fr=new FileReader("info.txt");
br=new BufferedReader(fr);
while((s1=br.readLine()) !=null && (s2=br.readLine()) !=null)
jTextField1.setText(s1);
jTextField3.setText(s2);
break;
fr.close();
}catch(Exception e){ System.out.println(e);}
public void sendMail()
{  try
Socket s = new Socket(jTextField3.getText(), 25);
out = new PrintWriter(s.getOutputStream());
in = new BufferedReader(new
InputStreamReader(s.getInputStream()));
String hostName
= InetAddress.getLocalHost().getHostName();
send(null);
send("Host " + hostName);
send("Mail FROM: " + jTextField1.getText());
send("Rcpt TO: " + jTextField2.getText());
send("Data");
out.println(jTextArea1.getText());
send(".");
s.close();
catch (IOException exception)
{  jTextArea2.append("Error: " + exception);
String err="Message cannot be sent!"+"\n"
+"Please verify the setting(s)."+
"\n"+"Else there may be a NetWork Problem."+
"\n"+"Please verify and Try Again.";
JOptionPane.showMessageDialog(frame_f,err,"Message Transmission Failure",JOptionPane.ERROR_MESSAGE);
public void send(String s) throws IOException
{  if (s != null)
{  jTextArea2.append(s + "\n");
out.println(s);
out.flush();
String line;
if ((line = in.readLine()) != null)
jTextArea2.append(line + "\n");
private void jComboBox1ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jComboBox1ActionPerformed
// Add your handling code here:
}//GEN-LAST:event_jComboBox1ActionPerformed
/** Exit the Application */
private void exitForm(java.awt.event.WindowEvent evt) {//GEN-FIRST:event_exitForm
System.exit(0);
}//GEN-LAST:event_exitForm
* @param args the command line arguments
public static void main(String args[]) {
new main1().show();
// Variables declaration - do not modify//GEN-BEGIN:variables
private javax.swing.ButtonGroup buttonGroup1;
private javax.swing.ButtonGroup buttonGroup2;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JTextField jTextField1;
private javax.swing.JTextField jTextField2;
private javax.swing.JLabel jLabel3;
private javax.swing.JTextField jTextField3;
private javax.swing.JComboBox jComboBox1;
private javax.swing.JButton jButton1;
private javax.swing.JButton jButton2;
private javax.swing.JButton jButton3;
private javax.swing.JLabel jLabel4;
private javax.swing.JRadioButton jRadioButton3;
private javax.swing.JRadioButton jRadioButton4;
private javax.swing.JButton jButton4;
private javax.swing.JTextField jTextField4;
private javax.swing.JLabel jLabel5;
private javax.swing.JButton jButton5;
private javax.swing.JButton jButton6;
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JTextArea jTextArea1;
private javax.swing.JScrollPane jScrollPane2;
private javax.swing.JTextArea jTextArea2;
private javax.swing.JLabel jLabel6;
private javax.swing.JLabel jLabel7;
private javax.swing.JLabel jLabel8;
private javax.swing.JLabel jLabel9;
private javax.swing.JLabel jLabel10;
private BufferedReader in;
private PrintWriter out;
private String addr,str_addr;
// End of variables declaration//GEN-END:variables

Answer 1

Hi I have this problem which I believe you can help me resolve:
In my code, there are two lines:
message.setContent(messageBody, "text/html"); // this sets body of message
message.setContent(bodyPartObject); // this attaches a file
but it turns out that the second "setContent" statement over-writes the first one, so that I get no message in the body of the mail.
What can I do about it, shamik1? Thanks!