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What is an abstract class? Please, expand by examples of using both. Explain why?
Abstract classes are closely related to interfaces. They are classes that cannot be instantiated, and are frequently either partially implemented, or not at all implemented. One key difference between abstract classes and interfaces is that a class may implement an unlimited number of interfaces, but may inherit from only one abstract (or any other kind of) class. A class that is derived from an abstract class may still implement interfaces. Abstract classes are useful when creating components because they allow you specify an invariant level of functionality in some methods, but leave the implementation of other methods until a specific implementation of that class is needed. They also version well, because if additional functionality is needed in derived classes, it can be added to the base class without breaking code.
Q. What is task identifier? Each and every PVM task is uniquely recognized by an integer known as task identifier (TID) assigned by local pvmd. Messages are received from and s
Explain about unix file system architecture
design a basic computer
Jobs which are admitted to the system for processing is called ? Ans. Long-term scheduling is admitted to the system for processing.
Define the terms- Action Semantics and ArgoUML Action Semantics : Action semantics is a group of firms that have responded to the OMG's RFP to define the action semantics fo
Yes, you have to have some form of X server (unless you're running Windows, of course). It requires an X server for image processing, and for font manipulation. Though, if you wish
Salient points about addressing mode are: This addressing mode is employed to initialise value of a variable. Benefit of this mode is that no extra memory accesses are
How and what data is collected - Weather simulation - Sensors measure pressure, relative humidity, temperature and wind speed and wind direction - Sensors are placed in w
What is interactive reporting? It helps you to make easy-to-read lists. You can view an overview list first that having general information and give the user with the possibil
The "SKIP TO LINE line number" is dependent on which statement included in the report statement of the program. The "SKIP TO LINE line number" is dependent on "LINE-COUNT" stat
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