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Final Mock exam question 40.(HFEJB)

 
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How many javax.ejb.EJBLocalHome interface methods can be called without an exception from a session bean client?

1) 0
2) 1
3) 2
4) 3
5) 4

My answer was one method [2)] and that method is remove(Object primaryKey) but the HFEJB book says answer is zero method[1)] . How is this possible?
 
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This one explains it http://java.sun.com/j2ee/sdk_1.3/techdocs/api/javax/ejb/EJBLocalHome.html

That 'remove' method is for entity beans.
 
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