abstract class

abstract class

(programming)
In object-oriented programming, a class designed only as a parent from which sub-classes may be derived, but which is not itself suitable for instantiation. Often used to "abstract out" incomplete sets of features which may then be shared by a group of sibling sub-classes which add different variations of the missing pieces.

abstract class

Also called an "abstract superclass," in object technology, it is a class created as a master structure. No objects of an abstract class are created, rather subclasses of the abstract class are defined with their own variations, and the subclasses are used to create the actual objects.
References in periodicals archive ?
Now all save option classes of fixed page formats (HtmlFixedSaveOptions, ImageSaveOptions, PdfSaveOptions, PsSaveOptions, SvgSaveOptions, SwfSaveOptions, XamlFixedSaveOptions and XpsSaveOptions) are inherited from the new public abstract class FixedPageSaveOptions.
A mestizo might "disappear" because different labels could attach to him or her and because mestizos were an abstract class, not a social group.
To implement a content provider in Android, we need to create a class that extends from abstract class Content Provider and implement its 6 required methods - query(), insert(), update(), delete() getType(), onCreate().
Because InputStream is an abstract class, we obtain its typestates by extracting submodels from typestates of its implementing type through a state-preserving submodel extraction algorithm.
Not all of these pieces are in the Abstract class. Both Greywater Can and Clearwater Can convey unfiltered delight in their craftsmanship through Rube Goldberg-style mechanics.
Technically this abstraction begins from a .NET abstract class named AbstractXmlDocument.
The problem which has to be solved in GiACoMo-IRS is to make the proposed attributes of the class optional and adaptable, so that they can be freely included or omitted and changed in the domain-specific implementation of the abstract class. Normally the implementation is realized by directly inheriting from the abstract class, which does not allow any changes on the inherited structure of the derived class.
Maroukis); (9) Concrete Thinkers in an Abstract Class: The Search for an Exercise to Improve Poetry Comprehension and Creation (Susan Morrison); (10) Evaluation of a Pre-Test and Post-Test for a Nocturnal Animals Unit (Melanie Oliver); (11) The Effects of Journaling on Communicating about and Understanding Visual Art (Carrie Pendegrass); (12) Athletics and Academic Achievement: How Are They Related?
The value of using italics is that it visibly reinforces the status of the corresponding species as a taxonomic entity, i.e., a formal, abstract class, distinct from the concrete viral objects that replicate and cause disease and that are written in Roman characters.
An abstract class is one that exists for other classes to inherit from.
It was intended that the correspondence project with real-life students whose experiences and perspectives were often different from their own would offer preservice teachers (a) a point of reference within which to contextualize otherwise abstract class discussions, (b) a more personalized means for learning about culturally different experiences, (c) an opportunity for more engaged and active learning, (d) a less threatening environment in which to examine their own biases and privilege and their implications, and (e) the impetus for greater commitment toward issues of multiculturalism within the educational community.