Two ear file communicating with each other

HI,
I have one doubt,
I Have two ear files (two webservices actually) deployed succesfully in the same application server (Weblogic7.0). Let us say them a.ear and b.ear
In a.ear there are class say A.class and B.class. In B.java file there is a staic HashMap which stores some object based on some id. Also in B.java there is static method which takes the id as a parameter and return the corrospojnding object stored in the static hasmap.
In b.ear file there class say B.class and C.class. Note that this ear file has its own copy of B.class file. In C.java file i create an object (though i dont need create being it a static method) of B.java and calls the static object passing it the id and expecting it that it will return me the object stored in the Hashmap. it returns me null though it has the objects stored for that id.
Is it because both ear files has their own copy of B.class. but i though that that they are running in the same jvm in application server so it should not be a problem. if this is the reason then my problem will be solved if i put them in same ear file.
Can anybody put his insights into his experiences and lemme know what is the cause of problem and solution and for my knowledge why it is happening.
Best Regards,
Akhil Nagpal

You're right that the two have different copies of the class. This is because the EJB container uses a different classloader for different applications, to prevent statics clashing with each other and other related security reasons.
Usually if you want to communicate from one to the other, you would use the EJB mechanism itself. The JNDI names should be global (from simple tests I did in the past, this seems to be the case) so that one application can look up an EJB from the other.

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