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an action class performs a role of an adapter among the contents of an incoming http request and the corresponding business logic that should be
action mapping having all the deployment information for a particular action bean this class is to verify where the results of the action will be
validate used to validate properties after they have been populated known as before formbean is handed to action returns a collection of actionerror
actionform is javabean which shows the form inputs containing the request parameters from the view referencing the action
actionservlet performs the role of controller process user requests verify what the user is trying to achieve according to the request pull data from
struts is a set of cooperating classes servlets and jsp tags that make up a reusable mvc 2 design javabeans components for managing application state
struts components can be classify into model view and controller model components like business logic business processes and data are the type of
struts framework is an open-source framework for producing the web applications in java ee based on mvc-2 architecture it uses and extends the java
a framework is made up of the set of classes which permit us to use a library in a best possible way for a particular
we can get the values in the action classes by using datagetparametervariable name described in the velocity
two xml configuration files are uses by the validator framework validator-rulesxml and validationxml the validator-rulesxml shows the standard
struts framework gives the functionality to validate the form data it can be use to authenticate the data on the users browser as well as on the
an actionform is a javabean that extends orgapachestrutsactionactionform actionform handles the session state for web application and the
the action class is type of the model and is a wrapper around the business logic the purpose of action class is to change the httpservletrequest to
jakarta struts is open source execution of mvc model-view-controller pattern for the development of web based applications jakarta struts is robust
model-view-controller mvc is a design pattern put together to help control change mvc decouples interface from business logic and data model the
in preemptive scheduling the highest priority task executes until it enters the waiting or dead states or a higher priority task comes into
in rpc the method invoker waits for the method to finish implementation and return the control back to the invoker therefore it is completely
point-to-point ptp this model permits exchanging messages via queues formed for some purposes a client can send and receive messages from one or
what is asynchronous messaging queueans asynchronous messaging includes a client that does not wait for a message from the server an event is used to
synchronous messaging involves a client that waits for the server to respond to a message so if one end is down the whole communication will
jms is the ideal high-performance messaging stage for intra business messaging with full programmatic control over quality of service and delivery
the jms provider handles security of the messages data conversion and the client triggering the jms provider verifies the level of encryption and the
messaging is a method of communication among software components or applications a messaging system is a peer-to-peer facility a messaging client can
which models are supported by jms please explain themans publish or subscribe pubsub this model permits a client publisher to send messages to a jms