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What is the difference between an Interface and an Abstract class?
An abstract class can have instance methods that execute a default behavior. An Interface can only declare constants and instance methods, but cannot execute default behavior and all methods are implicitly abstract.
An interface has all public members and no execution. An abstract class is a class which may have the usual flavors of class members (private, protected, etc.), but has some abstract methods.
Staging areas that have messages those have been sent and are waiting to be read. Note that, contrary to what the name queue suggests, messages don't have to be delivered in the or
What does TCP/IP stand for? TCP/IP is a Protocol type basically it is known by Transmission Control Protocol/Internet Protocol
The "http protocol" is a stateless response or request based protocol. You may contain the state information between different page requests as given below: HTTP Sessions are
Explain Data Updates issues in data management? DATA UPDATES: Old titles must be removed regularly Data changes every time Prices change Transportation / shipping cost change
What is Multiple Inheritance ? A few object oriented languages, notably C++, permits a class to inherit from more than one unrelated class. This is known as multiple inheritanc
Describe the relational operators in java? Java has six relational operators which compare two numbers and return a boolean value. The relational operators are , > , , >=
Define enumeration? Enumeration is explained as values type that having of a set of named values. These values are constants and are called enumerators. An enumeration type is
Normal 0 false false false EN-US X-NONE X-NONE
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When should I use abstract classes and when should I use interfaces? Use Interface, when: Design changing often or when various implementations only share method sign
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