Printing out the email address of sender from InternetAddress

This is the code that fetches up the sender and the subject of email.With this code i see the correct subject getting displayed but i see the address of the sender in different format.

Properties props = new Properties();
    props.put("mail.imap.host" , "imap.gmail.com" );
    props.put("mail.imap.user" , "username");
    // User SSL
    props.put("mail.imap.socketFactory" , 993);
    props.put("mail.imap.socketFactory.class" , "javax.net.ssl.SSLSocketFactory" );
    props.put("mail.imap.port" , 993 );
    Session session = Session.getDefaultInstance(props , new Authenticator() {
        @Override
                protected PasswordAuthentication getPasswordAuthentication() {
                        return new PasswordAuthentication("username" , "password");
        }
    });

    try {
      Store store = session.getStore("imap");
      store.connect("imap.g开发者_如何学Pythonmail.com" , "username" , "password");
      Folder fldr = store.getFolder("Inbox");
      fldr.open(Folder.READ_ONLY);
      Message msgs[] = fldr.getMessages();
        for(int i = 0 ; i < msgs.length ; i++) {
            System.out.println(msgs[i].getFrom() + "<-- FROM" + " " + msgs[i].getSubject() + "<---Subject");
        }
    } catch(Exception exc) {

    }
}

The output is :

[Ljavax.mail.internet.InternetAddress;@1462851<-- FROMGet Gmail on your mobile phone<---Subject
[Ljavax.mail.internet.InternetAddress;@bdab91<-- FROMImport your contacts and old email<---Subject
[Ljavax.mail.internet.InternetAddress;@4ac00c<-- FROMCustomize Gmail with colors and themes<---Subject
[Ljavax.mail.internet.InternetAddress;@1865b28<-- FROMtester<---Subject

What form it is?(@1462851) I want the email address of sender to appear instead of @1462851.How can i do this ?

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The getFrom() function returns a list of type Address[]. To have it printed as a plain string, please try InternetAddress.toString(msgs[i].getFrom()) in your System.out.

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I've spent some hard minutes before I found out this simple code:

System.out.println("received from "+((InternetAddress)((Address)(message.getFrom()[0]))).getAddress());

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You should use msgs[i].getFrom().getAddress(). What you see is the toString result of InternetAddress object (class name + hashcode)

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The reason for this is because you just print out the InternetAddress instance, which does not have a toString() method. Then it defaults to the Object.toString() which is primarily useful to see if objects are different.

Consider explicitly picking out the field you want to see in your print statement.