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	Method (computer science) - Wikipedia, the free encyclopedia
		A method should preserve the class invariants of the object it is associated with, and should always assume that they are valid when it commences execution.
		Method calls are often modelled as a means of passing a message to an object.
		It is often used as a place-holder to be overridden later by a subclass of or an object prototyped from the one that implements the abstract method.
	en.wikipedia.org /wiki/Abstract_method (830 words)

	Class (computer science) - Wikipedia, the free encyclopedia
		In C++, private methods are visible but not accessible in the interface; however they are commonly made invisible by explicitly declaring fully abstract classes that represent the interfaces of the class.
		An abstract class, or abstract base class (ABC), is one that is designed only as a parent class and from which child classes may be derived, and which is not itself suitable for instantiation.
		Abstract classes are superclasses which contain abstract methods and are defined such that subclasses are to extend them by implementing the methods.
	en.wikipedia.org /wiki/Abstract_class (3384 words)

	Method (computer science) -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-10-20)
		A method should preserve the (Click link for more info and facts about class invariants) class invariants of the object it is associated with, and should always assume that they are valid when it commences execution.
		Method calls are often modelled as a means of passing a (What a communication that is about something is about) message to an object.
		An abstract method is a method which has no (The act of implementing (providing a practical means for accomplishing something); carrying into effect) implementation.
	www.absoluteastronomy.com /encyclopedia/m/me/method_(computer_science).htm (769 words)

	[No title]
		an abstract method may be defined for an abstract-generic-function only, as, in that case, the method combination eliminates abstract methods from the effective method and ensure that concrete methods are present.
		methods withn a group are then ordered according to the :order specified for the given function.
		methods) method-group ;; reverse them if desired to get the most specific methods within each group last (declare (ignore qualifier)) (when (eq order :most-specific-last) (setf methods (reverse methods))) `(call-method,(first methods),(rest methods))))) (setf form (cond ((rest grouped-methods) ;; if there is more than one group, combine them with the operator.
	home.arcor.de /james_anderson/setf/library/de/setf/utility/clos/clos.lisp (490 words)

	Interface Sharing
		An abstract method serves as a placeholder for an overriding method that must be supplied by the derived class.
		Since the abstract method is visible in the base class it is possible to invoke an abstract method on a derived class object that has been type cast to the base class.
		method is declared to be an abstract method.
	ei.cs.vt.edu /~kafura/java/Chapter6/virtual.html (3199 words)

	Abstract, a method modifier (Site not responding. Last check: 2007-10-20)
		In a normal Lemick class any method prototyped with Declare statement is an abstract method thus causing the containing class to became abstract.
		For an extern class the prototyped methods are considered as normal with their body declared somewhere else.
		For the classes extending a abstract class with the abstract methods the compiler will require implementation of all the abstract methods unless the declared class is abstract itself.
	lemick.sourceforge.net /refman/node20.html (88 words)

	ipedia.com: Method (computer science) Article (Site not responding. Last check: 2007-10-20)
		A method should preserve invariants associated with the class, and should be able to assume that every invariant is valid on entry to the method.
		An instance method is a method invoked with respect to an instance of a class.
		Instance methods are often used to examine or modify the state of a particular object.
	www.ipedia.com /method__computer_science_.html (856 words)

	[No title] (Site not responding. Last check: 2007-10-20)
		Abstract class is used if some of the functions are well known and class will grow over time and that is in a project where many of the functionality are unknown, but there existence is base lined.
		An abstract method is one without a body that is declared with the reserved word abstract.
		An abstract method is a method in the child class that overrids a parent method.
	www.cs.colostate.edu /~cs153/TestsNQuizzes/ch9/AbsPoly.txt (2412 words)

	abstract (C# Programmer's Reference)
		Use the abstract modifier in a class declaration to indicate that a class is intended only to be a base class of other classes.
		It is not possible to modify an abstract class with the sealed modifier, which means that the class cannot be inherited.
		The implementation is provided by an overriding method, which is a member of a non-abstract class.
	msdn.microsoft.com /library/en-us/csref/html/vclrfabstract.asp (350 words)

	Hyperlinked ECMA C# Language Specification
		17.5.6 Abstract methods Paragraph 11 When an instance method declaration includes an abstract modifier, that method is said to be an abstract method.
		Paragraph 21 An abstract method declaration introduces a new virtual method but does not provide an implementation of that method.
		Paragraph 31 Abstract method declarations are only permitted in abstract classes (§17.1.1.1).
	www.jaggersoft.com /csharp_standard/17.5.6.htm (402 words)

	Method (Java 2 Platform SE v1.4.2)
		The reflected method may be a class method or an instance method (including an abstract method).
		The string is formatted as the method access modifiers, if any, followed by the method return type, followed by a space, followed by the class declaring the method, followed by a period, followed by the method name, followed by a parenthesized, comma-separated list of the method's formal parameter types.
		If the method completes normally, the value it returns is returned to the caller of invoke; if the value has a primitive type, it is first appropriately wrapped in an object.
	java.sun.com /j2se/1.4.2/docs/api/java/lang/reflect/Method.html (776 words)

	Writing Abstract Classes and Methods (Site not responding. Last check: 2007-10-20)
		Sometimes, a class that you define represents an abstract concept and, as such, should not be instantiated.
		An abstract class is not required to have an abstract method in it.
		But any class that has an abstract method in it or that does not provide an implementation for any abstract methods declared in its superclasses or implemented interfaces must be declared as an abstract class.
	java.sun.com /docs/books/tutorial/java/javaOO/abstract.html (519 words)

	Abstract Methods (Site not responding. Last check: 2007-10-20)
		And if the method is not overridden, it remains possible for a Python program to call the abstract method.
		method of a class to bind a method to an instance.
		The effect of this is that whenever an abstract method is called an exception is raised.
	www.brpreiss.com /books/opus7/html/page117.html (156 words)

	abstract (Site not responding. Last check: 2007-10-20)
		An abstract method is not actually implemented in the class.
		The body of the method is then implemented in subclasses of that class.
		An abstract method must be part of an abstract class.
	www.ibiblio.org /javafaq/course/week4/43.html (137 words)

	[No title]
		ABSTRACT CLASSES ================ An abstract class is a class whose sole purpose is to be extended.
		However, abstract classes can be extended in the same way as ordinary classes, and the subclasses are usually not abstract.
		The purpose of an abstract method is to guarantee that any non-abstract subclass will implement the method.
	www.cs.berkeley.edu /~jrs/61b/lec/12 (949 words)

	Abstract Classes and Using Peer Classes With the Java Native Interface
		The key idea with an abstract class is that it's useful when (a) there is common functionality that you'd like to implement in a superclass, and (b) some behavior is unique to specific classes and cannot be factored into the superclass.
		Since some of the methods in the abstract class are not defined, there would be no implementation to rely on if you had an object of such a class.
		The approach is to define an interface, define an abstract class that implements the interface and has common functionality, and then code (all methods implemented) subclasses of the abstract class that define representation-specific behavior.
	java.sun.com /developer/JDCTechTips/2001/tt0612.html (2167 words)

	[No title]
		A class may be declared abstract even if it does not contain an abstract method.
		An abstract class cannot be instantiated: it must be extended to be used.
		If there are some method implementations that all inheriting classes could share, the type could be defined as a subclass that implemented these methods.
	www.cs.indiana.edu /~chaynes/c212/f03/c/12.txt (730 words)

	CspAbstract (JavaCsp) (Site not responding. Last check: 2007-10-20)
		Abstract method to remove a conflict from the CSP.
		Abstract method for removing a constraint, all its conflicts will also be removed.
		Abstract method to remove a domain size of a specific variable.
	www.xs4all.nl /~bcraenen/JavaCsp/doc/javacsp/csp/CspAbstract.html (1112 words)

	abstract method concept from the Java knowledge base (Site not responding. Last check: 2007-10-20)
		if a method is declared with the same method signature as a method in a superclass
		then the method must have a throws clause that mentions the class of that exception or one of the superclasses of the class of that exception
		cannot be passed as an argument to a method or constructor
	www.site.uottawa.ca:4321 /java/abstractmethod.html (463 words)

	Using Abstract Classes in Visual Basic.NET
		In the abstract class you define all the common class members that are needed by all drawing classes.
		How the method is implemented in the derived class is totally up to the programmer as long as these requirements are met.
		Abstract classes may be thought of as a rather specialized programming tool.
	www.devx.com /dotnet/Article/28086 (1465 words)

	Abstract classes & methods (Site not responding. Last check: 2007-10-20)
		Abstract class is a class that has no direct instances, but whose descendants may have direct instances.
		A class is made abstract by declaring it with Keyword abstract.
		Abstract method does not provide an implementation & forces the derived class to override the method.
	www.csharpfriends.com /Articles/getArticle.aspx?articleID=72 (482 words)

	Method Overriding - Abstract Classes (Site not responding. Last check: 2007-10-20)
		method overriding can be used to add more functionality to a method
		methods of the superclass, the subclass must also be
		its methods must be overridden in a subclass
	www.cs.brandeis.edu /~obaby/cs11a/inheritance/overriding.html (159 words)

	Abstract classes vs. interfaces
		Choosing interfaces and abstract classes is not an either/or proposition.
		The base class knows that it needs those methods, but an abstract class lets your class admit that it doesn't know how to perform those actions; it only knows that it must initiate the actions.
		Abstract classes are an excellent way to create planned inheritance hierarchies.
	www.javaworld.com /javaworld/javaqa/2001-04/03-qa-0420-abstract.html (875 words)

	CS124: Java, Section 4.3
		An abstract class is one that is not used to construct objects, but only as a basis for making subclasses.
		For an abstract method, the block of code that gives the implementation of an ordinary method is replaced by a semicolon.
		The subroutines in an interface are abstract methods, which must be implemented in any concrete class that implements the interface.
	math.hws.edu /eck/cs124/javanotes2_fall1998/c4/s3.html (1640 words)

	Kirk Allen Evans' Blog : Visio - Abstract Method (Site not responding. Last check: 2007-10-20)
		This is definitely a glaring case of RTFM syndrome, but I hadn't found how to create abstract methods in Visio's UML Sequence Diagram template.
		Classes in Visio have an IsAbstract checkbox to indicate if the class is abstract, but there is no "IsAbstract" checkbox for methods.
		But there are two other constructs I can't get working: marking classes and methods as internal, and indicating that a constructor should call a base class constructor.
	blogs.msdn.com /kaevans/archive/2003/02/27/3167.aspx (527 words)

	PHP 5/OOP, Functionality similar to an Abstract method?
		I have an abstract class with quite a few 'children'.
		is a variation on an abstract method that, if not defined in a child,
		method in the child with an empty body.
	www.gthelp.com /showthread.php?t=717 (570 words)

	Surgery patents 200412 (Site not responding. Last check: 2007-10-20)
		600427000 - (abstract) - Apparatus and method for radiosurgery
		600459000 - (abstract) - Apparatus and method for ic-based ultrasound transducer temperature sensing
		600407000 - (abstract) - Method and device for the spatial adjustment of tussue data that are optically acquired at temporal intervals
	www.freshpatents.com /Surgery-dt200412ntc600.php (4297 words)

	CS635: Doc 12, Creational Patterns -Factory Method, Prototype, Abstract Factory
		A new instance is allocated and a bitwise clone of the current object is place in the new object.
		Declare variables to be instances of the abstract class not instances of particular classes
		Using factory method allows abstract class to do all the different ways to create a window.
	www.eli.sdsu.edu /courses/spring98/cs635/notes/creational/creational.html (1765 words)

	[No title]
		If a child class contains a method with the same signature as a method in its parent class, then the compiler uses the method in the child class to access any objects of that child class.
		In this case, we say the method in the child class overrides the method in the parent class.
		The effect of this restriction is to force programmers to define methods and fields known to belong "abstractly" to all "concrete" things of a particular sort.
	www.people.vcu.edu /~dprimeau/cmsc255/lecture26.html (614 words)

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