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EJB Interview Questions and Answers

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EJB Interview Questions & Answers


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Questions Question: What is the difference between sessioncontext and entitycontext
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Questions Question: What is CMR
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Questions Question: What is the difference between CMP 1.1 and CMP 2.0
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Questions Question: With EJB 1.1 specs, why is unsetSessionContext() not provided in Session Beans, like unsetEntityContext()
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Questions Question: What is the difference between ejbCreate() and ejbPostCreate()
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Questions Question: What is the difference between optimistic locking and pessimistic locking
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Questions Question: What are advantages and disadvantages of CMP and BMP
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Questions Question: Can undefined primary keys are possible with Entity beans?If so, what type is defined?
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Questions Question: Can undefined primary keys are possible with Entity beans?If so, what type is defined?
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Questions Question: When two entity beans are said to be identical?Which method is used to compare identical or not?
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Questions Question: Is instance pooling necessary for entity beans?
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Questions Question: What is Instance pooling
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Questions Question: How can we call cmp?
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Questions Question: What is the difference between find and select methods in EJB
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Questions Question: What is handle in EJB
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Questions Question: What is abstract schema
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Questions Question: If i throw a custom ApplicationException from a business method in Entity bean which is participating
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Questions Question: What is the difference b/w sendRedirect() and <jsp: forward>?
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Questions Question: What are simple rules that a Primary key class has to follow
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Questions Question: What is difference between EJB 1.1 and EJB 2.0 ?
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Latest 10 Answers
When there is any situation that u should attach a new patch to ur kernel , then download the patch and install it,to make changes to kernel , go to ok prompt and type boot -r, it will update or reconfigure the kernel
Honesty, helpful and reliable
procedure is a set of sql statement ,are combined to gether to perform a specific task or to solve a specifi problem.it does not return value.
leadership is power to influence a group so that the members willingly exert efforts as aspired by the leader.
I have the unique combination of technical skill and the ability to build strong customer relationship. I have the ability to stay focussed in stressfull situation. I would be great addition to your team.
first execute the bc search spec to fetch the data then executes the applet search spec if applet search spec is not match with bc it skips
TCP-Transmission Control Protocol. TCP is Reliable. TCP is Connection oriented. UDP-User Datagram Protoco UDP is Unreliable. UDP is Connectionless.
By default in structure all data member and member function are public,i,e if you not mentation any access specifier. But in case of class By default all data member and member function are private.
Structure is a user defined data type. By default all structure variables are public type and we cann't use access specifier in structure type variable, where as in class we can define objects(variables) under required access specifier type.
variable cost is the cost which is not fixed in nature

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