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Topic: Superclass

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Superclass biology

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	System Management Concepts: Operating System and Devices - WLM Class Attributes
		If the inheritance attribute is yes for the superclass and no (or unspecified) for the subclass, then, upon exec(), a child of a process in the subclass will remain in the same superclass and will be classified in one of its subclasses according to the assignment rules for the superclass.
		If the inheritance attribute is no (or unspecified) for the superclass and yes for the subclass, then upon exec(), a child of a process in the subclass will be submitted to the automatic assignment rules for the superclasses.
		If the process is classified by the superclass's rules in a different superclass, then the subclass assignment rules of the new superclass are applied to determine the subclass of the new superclass the process will be assigned to.
	www.ncsa.uiuc.edu /UserInfo/Resources/Hardware/IBMp690/IBM/usr/share/man/info/en_US/a_doc_lib/aixbman/admnconc/wlm_class_attrs.htm (1104 words)

	Superclass Evidence
		Because the superclass is a generalization, its plausibility must always be at least as great as that of the object.
		The presence of a superclass increases the plausibility of the object's presence.
		The context of the superclass is that of the object.
	homepages.inf.ed.ac.uk /rbf/BOOKS/FSTO/node45.html (304 words)

	[No title] (Site not responding. Last check: 2007-11-07)
		Superclass protected members may be accessed by methods of the superclass, by methods of subclasses and by methods of classes in the same package.
		When a superclass method implementation is inappropriate for a subclass, the programmer must override that method in the subclass.
		When a request is made through a superclass reference to use a method, Java chooses the correct overridden method in the subclass associated with the object.
	www.bus.ucf.edu /kmac/study/Quiz3Review.htm (2076 words)

	Chapter 9 Notes, CSE 3112 -- Java (Site not responding. Last check: 2007-11-07)
		Superclasses and Subclasses A. Inheritance models the "is-a" relationship by using a subclass to expand the definition of the superclass, thus providing a more restrictive subset of the objects belonging to the superclass.
		B. An attempt to assign a superclass object to a subclass reference would leave additional subclass members undefined, and therefore is a syntax error.
		Refer to a superclass object with a subclass reference -- it is not true to say that a superclass "is-a" object of the subclass -- will generate a syntax error -- the subclass reference must first be cast to a superclass reference VII.
	ranger.uta.edu /~springst/JavaCh9Notes.html (1881 words)

	Inheritance
		The instance variables declared in the subclass are in addition to those of the superclass: objects of the subclass have all the inherited instance variables of the superclass as well as those of the subclass.
		Visible superclass methods can be inherited by the subclass: this is accomplished by simply not giving an implementation of a method of that name.
		A subclass type is not a subtype of the superclass type, nor is it a subtype of the type implemented by the superclass, unless the type implemented by the subclass is a subtype of the type implemented by the superclass.
	www.pmg.lcs.mit.edu /papers/thetaref/node82.html (1796 words)

	Relation Superclass-Of in theory Frame-Ontology (Site not responding. Last check: 2007-11-07)
		Superclass-of is the inverse of the subclass-of relation.
		In Cyc, superclass-of is called #%allSpecs because it is a slot from a collection to all of its specializations (subclasses).
		We opted for `superclass-of' because it is less ambiguous.
	www-ksl.stanford.edu /people/brauch/demo/frame-ontology/SUPERCLASS-OF.html (89 words)

	Dummies::Making Generalizations in UML 2
		In UML the generalization line is represented as a solid line with a hollow arrowhead at the superclass end.
		In UML, a line with the hollow arrowhead that connects a subclass to a superclass is known as a generalization relationship.
		The subclass and the superclass may have a constructor operation (to create the instance) and a destructor operation (to destroy the instance).
	www.dummies.com /WileyCDA/DummiesArticle/id-2077,subcat-PROGRAMMING.html (1090 words)

	SuperClass.java (Site not responding. Last check: 2007-11-07)
		* * @author Grant William Braught * @author Dickinson College * @version 4/5/2000 / class SuperClass* { // Class Data: It is fine to initialize the class // data in its declaration because it pertains to // the entire class.
		private int a, b; /** * Default no-arg constructor that initializes * the instance data to 0 and increments the number * of SuperClass objects in existence.
		/ SuperClass() { a = 0; b = 0; numSuper++; } /* * Constructor that provides initial values for * the instance data.
	www.dickinson.edu /~braught/courses/cs132s00/classes/code/SuperClass.src.html (254 words)

	jFactor - Extract Superclass (Site not responding. Last check: 2007-11-07)
		Extract Superclass creates a new type from one or more selected types and modifies the currently selected types to have that new type as its superclass.
		Next, the Extract Superclass wizard (below) opens, allowing the name of the new superclass to be specified, the methods and fields to be selected, and the javadoc to be specified.
		The second column labeled "A" for "Abstract" indicates whether or not a method in the superclass should be generated as an abstract method.
	www.instantiations.com /jFactor/docs/VA/extract_superclass.htm (232 words)

	esm_deitel_javahtp_5\|Object-Oriented Programming: Inheritance\|Tips
		A compilation error occurs if a subclass constructor calls one of its superclass constructors with arguments that do not match exactly the number and types of parameters specified in one of the superclass constructor declarations.
		When a superclass method is overridden in a subclass, the subclass version often calls the superclass version to do additional work.
		The superclass constructor's body executes to manipulate the superclass's instance variables, and the subclass constructor's body executes to manipulate the subclass's instance variables.
	wps.prenhall.com /esm_deitel_javahtp_5/0,7101,549658-,00.html (489 words)

	A Monotonic Superclass Linearization for Dylan
		Typically, circular superclass relationships are prohibited, so a hierarchy (or heterarchy, in the case of multiple inheritance) of classes may be modeled as a directed acyclic graph with ordered edges.
		Note that at most one candidate class is in the linearization of each of the direct superclasses, because if two were to appear, one would precede the other due to the constraints and thus the order between them would be determined by the monotonicity requirement.
		Finally, we observe that every predecessor relationship encoded in the linearizations of superclasses used in the merging process comes from one of three sources: a subclass/superclass relationship, the local precedence order of a superclass of C, or one of the augmenting edges from the EPG for a superclass of C.
	www.webcom.com /haahr/dylan/linearization-oopsla96.html (5476 words)

	[No title] (Site not responding. Last check: 2007-11-07)
		All variables and methods of the superclass remain available in the subclass, new variables and methods are added.
		The idea is, that when the subclass extends the superclass, the printing does not require an additional print method, but rather an extension of the functionality of the method itself: overriding of that method from the superclass.
		NB The is-a extension is a methodological issue, not something that the language (compiler) enforces: a method could be overridden by one that has a different functionality, e.g., in the example by a print method that prints the poem the Ancient Mariner.
	www.win.tue.nl /~keesh/ow/id/JavaAB/chapter7.html (593 words)

	Chapter 7 Notes (Site not responding. Last check: 2007-11-07)
		J. Superclass members that should not be directly accessible to a sub- class via inheritance are declared 'private' in the superclass.
		Relationship between Superclass Objects and Subclass Objects A. An object of a subclass can be treated as an object of its corres- ponding superclass, but a superclass object is not automatically a subclass object.
		B. An explicit call to the superclass constructor(via the 'super' ref- erence) can be provided as the first statement in the constructor of the subclass; otherwise, the subclass constructor will call the superclass default or no-argument constructor implicitly.
	ranger.uta.edu /~springst/JChapter7Notes.html (1627 words)

	[No title] (Site not responding. Last check: 2007-11-07)
		A reference to a subclass object may be implicitly converted into a reference to a superclass object.
		An explicit cast can be used to convert a superclass reference to a subclass reference.
		This can only be done when the superclass reference is actually referencing a subclass object.
	www.iit.edu /~sambmal/cs441/chapter_9.ppt (1204 words)

	Inheritance
		In java, a subclass inherits all of the members in its superclass that are accessible to that subclass unless the subclass explicitly hides a member variable or overrides a method.
		The first is a call to the constructor of the superclass for the subclass.
		When an overridden method is called through a superclass reference variable, the JVM determines which method to execute (run-time) based on the type of object being referenced at the time.
	www.coe.uncc.edu /~sjkuyath/etee3286/Ch10/Inheritance.html (1197 words)

	Chapter 11
		If a subclass constructor does not call the superclass constructor, the superclass is constructed with its default constructor.
		Subclass references can be converted to superclass references, but not vice versa.
		The class Object is a direct or indirect superclass of every class in Java.
	science.kennesaw.edu /~rcobb/csis2302/c11j3e.htm (417 words)

	Java Review
		Rule: A subclass inherits all of the members in its superclass that are accessible to that subclass unless the subclass explicitly hides a member variable or overrides a method.
		In the case of member variables, the member variable in the subclass hides the one in the superclass.
		The ability of a subclass to override a method in its superclass allows a class to inherit from a superclass whose behavior is "close enough" and then supplement or modify (i.e., override) the behavior (i.e., the methods) of that superclass.
	www.nyu.edu /classes/jcf/x52.9271_su02/handouts/x52_9271_h1.htm (1471 words)

	Understanding Inheritance (Site not responding. Last check: 2007-11-07)
		A subclass inherits variables and methods from its superclass and all of its ancestors.
		Subclasses inherit those superclass members declared with no access specifier as long as the subclass is in the same package as the superclass.
		The ability of a subclass to override a method in its superclass allows a class to inherit from a superclass whose behavior is "close enough" and then supplement or modify the behavior of that superclass.
	www.unf.edu /~kmartin/tutorial/java/javaOO/subclass.html (374 words)

	Quantumwave.com - Different ways of Inheritance in Flash
		b) it is against the idea of superclass/subclass relationship: the subclass is inheriting not from the superclass but from an instance of it.
		Memory is still wasted as in Flash 5 with new instances of superclasses.
		SuperClass = function(a) { this.a = a; }; SubClass = function(a, b) { super(a); this.b = b; }; SubClass.extend(SuperClass);
	www.quantumwave.com /flash/inheritance.html (1108 words)

	Cincom VisualWorks Smalltalk Tutorial : Superclass
		The term super is short for superclass and in it's simplest form, it means "the class above the one you're at".
		The class of Dog would be the superclass of the German Shepherd class.
		The class of Animal would be the superclass of the Mammal class.
	smalltalk.cincom.com /tutorial/version7/tutorial1/vwsuper1.htm (874 words)

	Java Advanced Placement Study Guide: More on Arrays
		Both Superclass and Object are superclasses of the array type referred to by the reference variable named A.
		This reference is assigned to an array reference of a type that is a superclass of the actual class type of the array.
		Then the superclass reference is downcast to the actual class type of the array and assigned to a different reference variable.
	www.developer.com /java/other/article.php/978791 (3609 words)

	Comp 284 - Homework 5 Solution (Site not responding. Last check: 2007-11-07)
		A superclass is a class that is inherited by a subclass.
		When a method in a subclass has the same name and type signature as a method in a superclass, then the method in the subclass overrides the method in the superclass.
		When an overridden method is called through a superclass reference, the version of that method that is executed is the one defined by th object being referred to.
	homepage.mac.com /lsaenz/skyline/homework/hw5_solution.html (352 words)

	QuickSilver - Extract Superclass (Site not responding. Last check: 2007-11-07)
		Extract Superclass creates a new class from one or more selected classes, and makes the new class the superclass of the selected classes.
		To extract a superclass from one or more existing classes, select one or more sibling classes in the Project view, or place the cursor in a type in the Content view, then choose Extract Superclass in the Refactor submenu.
		Next, the Extract Superclass wizard (below) opens, allowing the name of the new superclass to be specified, and the methods and fields to be selected.
	www.instantiations.com /quicksilver/Docs/extract_superclass.htm (184 words)

	why is a superclass allowed to access protected methods of a (Site not responding. Last check: 2007-11-07)
		methods of an instance of the superclass, unless it is in the same package.
		methods of an instance of the superclass, unless it is in the same
		subclass method is definately being invoked from the superclass.
	javaquestions.org /ftopic5649.html (3722 words)

	[No title] (Site not responding. Last check: 2007-11-07)
		Superclass and subclass An inherited class is called a superclass.
		An extended class is considered a subtype of its superclass Assigning a reference of super type to its extended type is valid.
		Members in the superclass that are redefined in the extended class can still be accessed by using super Overloading a method means defining a new method with the same name but with different data types, numbers, or positions of parameters.
	www.cse.fau.edu /~sam/course/java_htm/extend.doc (1306 words)

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