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EJBs can be clients of other EJBs. It just works. Use JNDI to locate the Home Interface of the other bean, then acquire an instance reference, and so ...
In case of a stateless session bean it may not matter if we call or not as in both cases nothing is done. The number of beans in cache is managed by t ...
Can the primary key in the entity bean be a Java primitive type such as int?
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The primary key can't be a primitive type--use the primitive wrapper classes, instead. For example, you can use java.lang.Integer as the primary key c ...
How EJB Invocation happens?
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Step 1: Retrieve Home Object reference from Naming Service via JNDI.
step 2: Return Home Object reference to the client.
step 3: Create me a new EJB O ...
Transaction_read_uncommitted , Transaction_read_committed , Transaction_repeatable_read...........
[Source: JAGAN MOHAN "Interview questions bible"] ...
The transaction attribute specifies how the Container must manage transactions for a method when a client invokes the method via the enterprise bean†...
If a developer doesn't want a Container to manage transactions, it's possible to implement all database operations manually...........
[Source: JAGA ...
