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Frequently Asked Questions

Can I use JavaMail in servlets?

JavaMail API - FAQ
My web application uses JavaMail to attach and send a file that the user specifies, but my application can't find the file.

Is it possible to use JavaMail?

FAQ - JSP Hosting, Servlet Hosting, J2EE Hosting
The shared JVM has the JavaMail libraries in the CLASSPATH. If you have a private JVM, you can include the appropriate .jar files in your private JVM. The JavaMail APIs are included with Jakarta Tomcat 4 and Tomcat 5. Note: the application should be using localhost to connect with it. See similar questions...

Can I use Java/Servlets on my website ?

Pre Hosting Account Signup FAQ - Server101.com
We do not currently support JSP pages as they can be resource hungry and are not viable in a shared hosting environment. We usually recommend that customers wanting to use Java servlets go on their own dedicated server for enhanced reliability and security for their Java environment. You can request a dedicated quote here. See similar questions...

Where can I find some example programs that show how to use JavaMail?

JavaMail API - FAQ
There are many example programs included in the JavaMail download package, including simple command line programs illustrating various aspects of the JavaMail API, a Swing-based GUI application, a simple servlet-based application, and a complete web application using JSP pages and a tag library. See similar questions...

Can I use JavaMail in applets?

JavaMail API - FAQ
Yes, JavaMail will work in applets in browsers that support the required JDK version. The Java Plug-in may be required to provide such support. See similar questions...

Can I use JavaMail to backup my GMAIL account?

jGuru: What's New
Short answer. Yes. Longer answer: In Gmail, access the SETTINGS link. Select FORWARDING AND POP. Select Enable POP for all mail (even mail that's... This is controlled by an option in the Control Panel. Find the Advanced tab of the Java feature under the Control Panel. Select "Show console" and it will... All Linux Devices | AntiOnline | Apache Today | ASPNews | CPU Planet | DatabaseJournal | DBASupport. See similar questions...

When should one use applets and when should one use servlets?

jGuru: Applets FAQ
Author: Alex Chaffee (http://www.jguru.com/guru/viewbio.jsp?EID=3) Question originally posed by swati m (http://www.jguru.com/guru/viewbio.jsp?EID=64343 Applets run inside browsers, and servlets run inside servers. So broadly speaking, use applets when you need dynamism on the client side, and use servlets when you need dynamism on the server side. Servlets can produce any HTML (or indeed, any file type), and therefore are much more versatile than applets. See similar questions...

why to use jsp as they r implement as servlets?

EJB FAQ
Latest Answer: JSP vs Servlet1) Servlet is pure java codes, which is used to extend the web server by providing dyn... Latest Answer: Servlet tunneling means when one request from a servlet is passed to another servlet in order to ach... See similar questions...

Can I use the JavaMail APIs to implement a mail server?

JavaMail API - FAQ
The JavaMail APIs were not intended to help you implement a mail server. Nonetheless, some of the utility classes, such as the MIME message parsing classes, might be of use to you. In general you'll find that the JavaMail API errs on the side of "simple" instead of "robust". That's appropriate for a mail client, but a mail server would likely make different tradeoffs. The JavaMail API does not include any facilities for adding, removing, or changing user accounts. See similar questions...

What are servlets?

Java Network Programming FAQ
Servlets are server-side Java applications, as opposed to client-side applets or standalone applications. While servlets are compatible with many different types of servers, typically they are used in web servers, as a replacement for CGI scripts or Active-Server Pages (ASP). Java servlets offer many advantages over other forms of server-side processing. See similar questions...

Should I use single-threaded, or multi-threaded servlets?

Java Network Programming FAQ
By default, servlets are multi-threaded. If you specifically require a single-threaded servlet, you should implement the javax.servlet.SingleThreadModel interface. This guarantees that no two threads will be operating on the same instance of the servlet, but still allows concurrent execution of the servlet. The servlet engine will maintain a pool of available threads, and create new instances of the servlet as required. See similar questions...

Session management Q: What is the use of sessions in servlets?

Code Style: Servlet sessions frequently asked questions (FAQ...
The servlet HttpSession interface is used to simulate the concept that a person's visit to a Web site is one continuous series of interactions. This is often the case, but the HTTP protocol is basically a request-response mechanism with no necessary connection between one request and the next. See similar questions...

How can I use simple load-balancing for my servlets?

Apache JServ Frequently Asked Questions
This can be done with optional mod_rewrite module, a a rule-based rewriting engine to rewrite requested URLs on the fly. The idea is to rewrite incoming URL with different Servlet mount points in order to be able to distribute requests on different Apache JServ's. In the following sample, a random load-balancing is performed on 3 servlet engines (but mod_rewrite can make more for you). See similar questions...

Can I use the JavaMail APIs to access my address book on my mail server?

JavaMail API - FAQ
The JavaMail API does not include any facilities for accessing an address book. There are no standards in this area; every mail server handles this differently. If you can figure out how your server does it, you might be able to find a Java API to access it. For example, if your server stores address books in LDAP, you could use the JNDI API to access it. The JavaMail API was designed to layer on top of existing email systems, using existing message formats. See similar questions...

What configuration options do I use to connect to gmail/Google from JavaMail?

jGuru: JavaMail FAQ Home Page
Google offers the configuration options at http://mail.google.com/support/bin/answer.py?answer=13287. If your version of Exchange doesn't implmenet POP3 properly, you need to tell JavaMail to forget about TOP headers by setting the mail.pop3.forgettopheaders... JavaMail 1.4 adds get/setPreamble() methods to the MimeMultipart class. Some protocols like IMAP will not allow access to this text. See similar questions...

What is the JavaMail API?

JavaMail API - FAQ
The JavaMail API is a set of abstract APIs that model a mail system. The API provides a platform independent and protocol independent framework to build Java technology based email client applications. The JavaMail API provides facilities for reading and sending email. Service providers implement particular protocols. Several service providers are included with the JavaMail API package; others are available separately. See similar questions...

What is the use of sessions in servlets? Q: Are sessions created on the server side?

Code Style: Servlet sessions frequently asked questions (FAQ...
A servlet session is created and stored on the server side. The servlet container keeps track of all the sessions it manages and fulfils servlet API requests to get HttpSessions, manipulate object data stored with them and trigger event callbacks. First, it is best to use a single servlet to handle each form submission. A single servlet for all input would be too complicated. See similar questions...

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