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EJB Interview Questions and Answers

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EJB Interview Questions & Answers


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Questions Question: When we use abstract class and interface ?
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Questions Question: What is static block?
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Questions Question: Why java is system independent?
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Questions Question: What is the use of using session facade design pattern in EJB'S?
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Questions Question: What is meant by Serialization and Externalization? Serialization is a Marker interface,so what is the use of WriteObject() anf ReadObject(), Where it is actually used? Give me some real time examples?
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Questions Question: Already we have http session in servlets. so why we use session beans ejb?
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Questions Question: What is the difference between EJB and RMI
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Questions Question: Without using entity beans can we do database transactions?
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Questions Question: Can we use session beans & entity beans in single application?
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Questions Question: What is the difference between EJB and J2EE ?
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Questions Question: Is stateful session beans are scalable?
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Questions Question: Which are features in EJB 2.0 ? and which are features in EJB 3.0?
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Questions Question: What happens when an interface extends another interface?
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Questions Question: Who makes the EJBObject class?
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Questions Question: Why don't stateful session beans have a pool?
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Questions Question: Does each stateless session bean have its own EJBObject?
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Questions Question: How do I know what the develper named the bean?
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Questions Question: What is IIOP ?
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Questions Question: I have 2 session beans sb1 & sb2. In session bean 2 there is a bussiness exception occurs. If I don't want to rollback the transaction in sb1 which declartive transaction attribute I have to use in both beans?
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Questions Question: How to invoke servlet from ejb components?
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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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