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The stateless nature of HTTP makes locking infeasible for web user interfaces. It is common for a user to start editing a record, then leave without following a "cancel" or "logout" link. If locking is used, other users who attempt to edit the same record must wait until the first user's lock times out.
This makes a stateless session bean automatically thread-safe. Instance variables can be used during a single method call from a client to the bean, but the contents of those instance variables are not guaranteed to be preserved across different client method calls. Instances of Stateless Session beans are typically pooled.
Apache Click is a page and component oriented web application framework for the Java language and is built on top of the Java Servlet API.. It is a free and open-source project distributed under the Apache license and runs on any JDK installation (1.5 or later).
A stateless protocol is a communication protocol in which the receiver must not retain session state from previous requests. The sender transfers relevant session state to the receiver in such a way that every request can be understood in isolation, that is without reference to session state from previous requests retained by the receiver.
This is the data that relates to the actual business process, run by the current service activity e.g. customer records, etc. on some occasions this type of data may need to be temporarily stored, especially if it acts as an input to the next stage within the service activity.
HTTP is a stateless protocol. A stateless protocol does not require the web server to retain information or status about each user for the duration of multiple requests. Some web applications need to manage user sessions, so they implement states, or server side sessions, using for instance HTTP cookies [46] or hidden variables within web forms.
The classpath tells Java where to look in the filesystem for files defining these classes. The virtual machine searches for and loads classes in this order: bootstrap classes: the classes that are fundamental to the Java Platform (comprising the public classes of the Java Class Library , and the private classes that are necessary for this ...
In software engineering, a connection pool is a cache of reusable database connections managed by the client or middleware. It reduces the overhead of opening and closing connections, improving performance and scalability in database applications.