Ensure Parallel Execution Through Java Actor Library In Java Application Development?

By Author: Dylan Rodriguez
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The parallel programming is not easy in Java language even though it contains concurrency updates in version 6 and 7. Java threads, synchronized packages and java.util.concurrent package have certain roles to play but offshore Java development team still face the challenges of meeting the multi-core system capacity and resorting to techniques adopted in other languages.
The JavaActors library is quite a compact library that helps offshore java developers to implement actor-based systems on the Java platform.
Understanding Actor concurrency
Actor-based systems enable parallel processing in a more simplified manner in order to deploy a message-passing scheme. In this particular scheme, each actor is designed to get messages; send messages to other actors as well as perform actions by the messages. It is also possible for Java web development team to utilize actor based systems to perform complex sequences of operations. All the messages are asynchronous, which means that the sender continues to process even before receiving any kind of reply. This means that the life of the actor based system can be spent ...
... through an indefinite loop of processing and receiving messages.
When offshore Java developers use multiple actors then independent activities are distributed properly across multiple threads that can also implement messages in parallel. This means that each actor in Java development is able to process messages on a separate thread thereby enabling parallel execution up to a certain number of actors. Some actors can even assign threads to other actors statically.
Understanding JavaActors
JavaActors is a easier Java implementation of an actor system. Utilizing 1,200 lines code, JavaActors maybe small but it is definitely extremely powerful. JavaActors as part of Java development is based on three key interfaces:
Message: Outsourced Java development team uses JavaActors to send messages between actors and ideally message contains three values and some behaviour.
Source is the sending actor
The meaning of the message is defined through the subject
The parameter data for the message is known as data, which often includes a map, array or list. Parameters can be listed as data to process or the interaction that takes place between other actors.
In order to check if the subject matter matches a string of regular expression, subjectMatches() is used.
DefaultMessage is the class that offshore Java development team uses for the JavaActors package.
ActorManager is used by outsourced Java development team for allocating threads to actors so that it can process messages. Some of the main characteristics of ActorManager include:
createActor() creates an actor and associates it with this manager.
Outsourced Java development team can start an actor through the command startActor()
Offshore Java development team can stop and detach an actor from its manager through the command detachActor()
The command that helps in sending a message to an actor or a set of actors is through the command send()/broadcast()
In most of the Java development programs, outsourced Java development team uses a single ActorManager. The offshore Java team also has access to multiple in order to manage multiple thread or actor pools.

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