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Step - 4 : Show labels in screens above the form like "New Person --- Simple Event"  and  "New Person --- Java Event" so that it will be easy to identify the purpose of that form.

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public static String createPracticePersonJavaEvent(HttpServletRequest request, HttpServletResponse response){    LocalDispatcher dispatcher = (LocalDispatcher) request.getAttribute("dispatcher");        GenericDelegator delegator = (GenericDelegator) request.getAttribute("delegator");
}

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After writting event in Java don't forget to compile it by running "ant" command. At this moment you will need to add build.xml file to your component directory i.e. at hot-deploy/practice/ For the content of build.xml file you can refer "example" component.
Here in build.xml file ensure one thing you are having follwing entry:

<target name="classpath">

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    <path id="local.class.path">

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        <fileset dir="../../framework/base/lib/j2eespecs" includes="*.jar"/>

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    </

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path></target>

This will needed for the classes like

import javax.servlet.http.HttpServletRequest;

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import javax.servlet.http.HttpServletResponse;  

So create a file by name build.xml and then compile it. It will create a build directory in your component directory which will be containing all *.jar and class files after compilation. For the content of build.xml file you can refere example component. 

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Step - 2 :  Now you have to create a file by name "eecas.xml" in "entitydef" directory, which will be in your component directory "practice". Eeca definition will come here. (Take reference from eecas.xml of "accounting" component). This will be :

    <!-- To create party role whenever a party is created -->
    <eca entity="Party" operation="create" event="return">
        <condition field-name="partyId" operator="is-not-empty"/>
        <action service="createPartyRoleCustomer" mode="sync"/>
    </eca>

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 Create a group service by name "partyGroup" like :

<!- - Group service -->
    <service name="partyGroup" engine="group" auth="true">
        <description>Creates a party, person and party role Client</description>
        <group>
            <invoke name="createPracticePerson" result-to-context="true"/>
            <invoke name="createPartyRoleClient"/>
        </group>
    </service>

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Step - 2 : Create new screen, form and service for creating a person. Here service will implement the interface. (For creating interface take reference from services_fixedasset.xml of accounting component) it will be like :

<!- - Peson Interface - ->
    <service name="createPersonInterface" engine="interface" location="" invoke="">
        <attribute name="firstName" mode="IN" type="String" optional="false"/>
        <attribute name="middleName" mode="IN" type="String" optional="true"/>
        <attribute name="lastName" mode="IN" type="String" optional="false"/>
        <attribute name="suffix" mode="IN" type="String" optional="true"/>
    </service>
   
    <service name="createPracticePersonInterfaceService" engine="simple" location="org/hotwax/practice/PracticeServices.xml" invoke="createPracticePersonInterfaceService" auth="false">
        <description>Creates a new Person</description>
        <implements service="createPersonInterface"/>
        <attribute name="partyId" mode="OUT" type="String" optional="false"/>  
        <override name="suffix" optional="false"/>
    </service>

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Don't forget to restart the server after this implementation.