Communicating with a POP3 server over SSL/TLS in Java

Overview 

       This article will demonstrate how to communicate with a POP3 server over SSL using Secure iNet Factory.

Code Example

      Download POPSSLEx.java

           

01 import java.util.Enumeration; 02 import com.jscape.inet.email.EmailMessage; 03 import com.jscape.inet.popssl.PopSsl; 04 05 06 public class POPSSLEx 07 { 08  public static void ImplicitSSL_TLS() 09  { 10  try 11  { 12  String hostname = "host"; 13  String username = "username"; 14  String password = "password"; 15  // create new PopSsl instance 16  PopSsl ssl = new PopSsl(hostname,995,username,password); 17  // establish SSL/TLS connection 18  ssl.connect(); 19  // get messages and print subject 20  Enumeration e = ssl.getMessages(); 21  while(e.hasMoreElements()) 22  { 23  EmailMessage msg = (EmailMessage)e.nextElement(); 24  System.out.println("Subject: " + msg.getSubject()); 25  } 26  // disconnect 27  ssl.disconnect();  28  } 29  catch (Exception e) 30  { 31  e.printStackTrace(); 32  } 33  } 34   35  public static void ExplicitSSL_TLS() 36  { 37  try 38  { 39  String hostname = "host"; 40  String username = "username"; 41  String password = "password"; 42  // create new PopSsl instance 43  PopSsl ssl = new PopSsl(hostname,110,username,password); 44  // set connection type 45  ssl.setConnectionType(PopSsl.STARTTLS); 46  // establish SSL/TLS connection 47  ssl.connect(); 48  // get messages and print subject 49  Enumeration e = ssl.getMessages(); 50  while(e.hasMoreElements()) 51  { 52  EmailMessage msg = (EmailMessage)e.nextElement(); 53  System.out.println("Subject: " + msg.getSubject()); 54  } 55  // disconnect 56  ssl.disconnect();                         57  } 58  catch (Exception e) 59  { 60  e.printStackTrace(); 61  } 62  } 63   64  public static void main(String[] args) 65  { 66  ImplicitSSL_TLS(); 67  ExplicitSSL_TLS(); 68  } 69 } Lines 1-3  :  Necessary Import Statements. Lines 8-33 :  Connect to POP3 server over SSL on port 995. Lines 35-62 : Connect to POP3 server over SSL on port 110. This function               demonstrates connecting using explicit SSL and STLS command.