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a) name :- defines the name of our web application.
b) title :- This will be the title of our component
c) server :- This will let OFBiz know what server to use
d) base-permission :- This line requires that the user should have the OFBTOOLS permission to be able to use the application. Since the 'admin' user has this permission we do not have to create any new users.
e) location :- This will be the location that is the default base directory for the server
f) mount-point :- This is the URL used to access this resource. in this case it would be localhost:8080/practice
g) app-bar-display :- This will let OFBiz know if we want our component to show up in the main application tabs that are part of the common ofbiz decorator. 

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Note :  If it is a service which is written in Java then it will be placed in "src" directory and if it is a service which is written in minilang then it will be placed in script directory. e.g. for java applications/party/src/org/ofbiz/party/party/PartyServices.java and for minilang applications/party/script/org/ofbiz/party/party/PartyInvitationServices.xml. Respective class path and file path will be mentioned in the service definition.

Step - 2 :  In controller you have to create an entry for the request for the execution of a service and set the response .like

<request-map uri="createPracticePerson">
    <security https="true" auth="true"/>
    <event type="service" invoke="createPracticePerson"/>
    <response name="success" type="view" value="PersonForm"/>
</request-map>

Step - 3: Now all the services which you have written needs to be loaded when server starts so you need to do an entry for service definition in ofbiz-component.xml file which will be like :

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