java - how many instances of the class UserHandler will be created in this case? -

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in our application using spring rmi concept .

i have question follows

there 1 interface named userhandleri , implementation class userhandler shown below

interface 

public interface userhandleri extends remote {  public boolean add_user(string message) throws exception;  }

and implementation class (userhandler)

public class userhandler implements userhandleri  { public abstract boolean add_user(string message) throws exception { // business logic goes here return true ; } }

related above class , interface above , these mentioned in xml file 

<bean id="streamer-core" class="com.user.userhandler" scope="singleton" />       <bean id="streamer" class="org.springframework.remoting.rmi.rmiproxyfactorybean">         <property name="serviceurl" value="rmi://${${appl-host}}:${${appl-port}}/app" />         <property name="serviceinterface" value="com.at.userhandler"/>         <property name="refreshstubonconnectfailure" value="true"/>         <property name="lookupstubonstartup" value="false" />     </bean>

i not sure if missing configuration files ??

my question , how can know how many (instances ) times class userhandler created . singleton ?? can prove ??

thanks in advance .

you have set com.user.userhandler bean name streamer-core singleton scope. created 1 bean streamer-core per 1 application context. more details read: spring documentation:

scopes single bean definition single object instance per spring ioc container.

but related bean. after set com.user.userhandler seviceinterface rmiproxtfactorybean create 1 more instance com.user.userhandler.

instance com.user.userhandler creates in rmiproxyfactorybean#afterpropertyset via proxyfactory


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