Java Event mechansim

The project is to build event mechanism (From scratch or utilize existing open-source project) with the following functions:

* The events should be defined in a central place (i.e. central event list)

* Event should be raised from a class with a reference to relevant object (Event relevant data).

* Objects can listen on events (register on event). The registration should be either in the listener class or in central place, where all events & listeners are mapped.

* An object can listen to more than one event.

* The mechanism should be able to invoke the listeners with the corresponding event name + relevant data object.

* The listener should have a basic life-cycle, that indicates the listener completion status.

Each life cycle status is actually an Event the will trigger a corresponding action:

- OK (do nothing)

- Retry (Should re-invoke the listener up to 4 times)

- Failed (Log failure)

* Event invocation should be decoupled and asynchronous.

The solution should be *Simple*, scalable & robust.

The mechanism will be used in the following environment:

JDK 6, Ubuntu, Tomcat 6

Skills: J2EE, Java

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About the Employer:
( 31 reviews ) Ramat Gan, Israel

Project ID: #552848

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Hi! Please check you PMB.

$100 USD in 3 days
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13 freelancers are bidding on average $175 for this job


Hi, I am Arnold, sales manager of distibuted development team. Most of the team is situated in Kaluga city, Russia. We're working on J2ee/Java for several years. We are familiar with Tomcat server and we are able to More

$200 USD in 7 days
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Hello, I am sending you my bid details via PMB.

$250 USD in 10 days
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Hello sir, I have over 3 years of experience in java.I did several projects under my academic course.I hope I can do this job [login to view URL] for your reply. Thanks.

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Hi, I can do this project. Please see PM for more details.

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I can do it now.

$100 USD in 3 days
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I am a developer based in Calgary, Canada with over 5 years of Java development experience. I can give you a better time estimate of how long this would take me if once I have more of the specifics and have seen the co More

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Hi, i can do this job. please see the pmb.

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Hi friend, analyzed the requirement and need details from you which are mentioned in the PM. Please check the PM.

$250 USD in 15 days
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Hello,I have a good skill at Java and ready to do your work.

$150 USD in 10 days
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Hi I'm an experienced java programmer.I work a lot in swing so I know the event java mechanism very well.I can do this in few [login to view URL] you have questions please write me.Thanks.

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[login to view URL] some more elaborate idea about exact requirment.

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