Sunday, 1 February 2015

Basic J2SE Interview Questions and Answers (Part3)

21. What is case ?
A Java keyword that defines a group of statements to begin executing if a value specified matches the value defined by a preceding switch keyword.

22. What is casting ?
Explicit conversion from one data type to another.

23. What is catch ?
A Java keyword used to declare a block of statements to be executed in the event that a Java exception, or run time error, occurs in a preceding try block.

24. What is "abstract schema" ?
The part of an entity bean's deployment descriptor that defines the bean's persistent fields and relationships.

25. What is "abstract schema name" ?
A logical name that is referenced in EJB QL queries.

26. What is "access control" ?
The methods by which interactions with resources are limited to collections of users or programs for the purpose of enforcing integrity, confidentiality, or availability constraints.

27. What is "ACID" ?
The acronym for the four properties guaranteed by transactions: atomicity, consistency, isolation, and durability.

28. What is "activation" ?
The process of transferring an enterprise bean from secondary storage to memory. (See passivation.)

29. What is "anonymous access" ?
Accessing a resource without authentication.

30. What is class ?
In the Java programming language, a type that defines the implementation of a particular kind of object. A class definition defines instance and class variables and methods, as well as specifying the interfaces the class implements and the immediate superclass of the class. If the superclass is not explicitly specified, the superclass will implicitly be Object.
More Questions & Answers :-
Part1  Part2  Part3  Part4  Part5  Part6

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