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Topic: Instance variable

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	The Essence of OOP using Java, Instance Initializers
		The code in an instance initializer block is executed after the constructor for the superclass is executed, and before the constructor for the class to which the initializer belongs is executed.
		An instance variable is defined in the class named B and is initialized (using a simple initialization expression) with the time in milliseconds that the variable is initialized.
		This was followed by execution of the first instance initializer at 310 milliseconds, initialization of the ordinary instance variable at 410 milliseconds, and execution of the second instance initializer at 510 milliseconds.
	www.developer.com /java/other/article.php/3065621 (5332 words)

	Day 6 --Creating Classes and Applications in Java
		Instance variables, fortunately, are declared and defined in almost exactly the same way as local variables; the main difference is their location in the class definition.
		Instance variables have a scope that extends to the entire class so they can be used by any of the methods within that class.
		When you refer to a variable within your method definitions, Java checks for a definition of that variable first in the current scope (which may be a block, for example, inside a loop), then in the outer scopes up to the current method definition.
	www.fortunecity.com /skyscraper/lol/729/JAVA/ch6.htm (4324 words)

	Variable
		An instance of this DRM class is used to connect an instance to a location within an tree where outside control may be exerted.
		For a instance contained within a , evaluation is valid only for a specific instance of that .
		For a instance contained within an , the evaluation can only be performed within the context of values that shall be supplied by the consuming system.
	www.sedris.org /sdk_4.0/docs/tech/drm/classes/Variable.htm (623 words)

	Goravani Omnis Studio Programming Tutorial (Site not responding. Last check: 2007-09-17)
		The instance variable is it's temporary home while it is being viewed and manipulated by the user, and then it is written back to disk when the user finishes.
		Then the "$ivars" term means "instance variables" and thereby we instruct Omnis to now look at the "instance variables" pane in the "current instance" in which we are operating.
		When I entered iv1 into the instance variable editor pane window in Omnis Studio for this window class, I told it to be type of "row", so it is definable just like a list, and this one line of notation does that- it defines the row according to my file called "Native".
	www.goravani.com /omnis/instance.html (1814 words)

	Instance Variable Role
		It is important to know what role a particular instance variable performs in a class, as this will affect when and how it is initialized and used.
		Identity variables are set very early in the lifetime of the object, generally by using an Instance Creation Method.
		The recordings variable can be altered throughout the lifetime of the tape and so is considered to be a State instance variable.
	www.object-arts.com /docs/instancevariablerole.htm (405 words)

	Xah: The “static” keyword in Java
		When a variable is declared with the static keyword, its called a “class variable”.
		Without the “static” keyword, it's called “instance variable”, and each instance of the class has its own copy of the variable.
		In the main class t1, we try to manipulate the variables x and y in t2, showing the differences of instance variable and class variable.
	xahlee.org /java-a-day/instance_vs_class_members.html (324 words)

	Instance variables (Site not responding. Last check: 2007-09-17)
		Two different objects, even if they belong to the same class, are allowed to have different values for their instance variables.
		From outside the object, instance variables cannot be altered or even observed (i.e., ruby's instance variables are never public) except by whatever methods are explicitly provided by the programmer.
		In fact, each instance variable is dynamically appended to an object when it is first referenced.
	www.ruby-doc.org /docs/UsersGuide/rg/instancevars.html (91 words)

	Instance Variable Name
		A good instance variable name should result in readable code, not only in methods of the receiver, but also in senders of the corresponding Accessor Methods.
		Documentation about an instance variable (including its type and purpose) should be located in the associated Accessor Method and the class comment.
		An instance variable name should use Word Capitalization where necessary and must begin with a lowercase letter.
	www.object-arts.com /docs/instancevariablename.htm (212 words)

	Understanding Instance and Class Members (The Java™ Tutorials > Learning the Java Language > Classes and ...
		When a number of objects are created from the same class blueprint, they each have their own distinct copies of instance variables.
		Every instance of the class shares a class variable, which is in one fixed location in memory.
		Instance methods can access instance variables and instance methods directly.
	java.sun.com /docs/books/tutorial/java/javaOO/classvars.html (697 words)

	Chapter 10. Context
		Variable overloading means that each path of execution can have its own copy of a variable with the same name.
		Variable overriding means that variables of nested paths of execution override variables in more global paths of execution.
		When a process instance is persisted in the database, normal variables are also persisted as part of the process instance.
	docs.jboss.org /jbpm/v3/userguide/context.html (1065 words)

	Declaring a Variable (Site not responding. Last check: 2007-09-17)
		is an optional variable, function, or parameter - or any combination of them, with operators and parentheses - that evaluates to the same type as and whose value the variable should assume immediately upon creation.
		Only an instance variable can be declared with a list of modifiers.
		If an instance variable is given an initial value, that value is stored in the variable before the first statement of the constructor of the object is executed.
	www.cs.brown.edu /courses/cs015/ref/javarefguide/declarevariable.html (202 words)

	The Essence of OOP using Java, The this and super Keywords
		A class inherits the variables and methods of its superclass, and of the superclass of that class, etc., all the way back up the family tree to the single class Object, which is the root of all inheritance.
		Normally, instance methods belonging to an object have direct access to the instance variables belonging to that object, and to the class variables belonging to the class from which that object was instantiated.
		It is also allowable for the name of a local variable to be the same as the name of an instance variable or a class variable.
	www.developer.com /java/article.php/1440571 (3989 words)

	[No title]
		For a class instance or object, the MEMORY is DYNAMICALLY ALLOCATED whenever the instance is created in the program and it is freed or garbage collected automatically when it is no longer used.
		This creation of an instance of a class and using dynamic memory allocation to do it, is a key aspect of OO and Java.
		It is an instance because you must need an instance of a class to use it.
	home.att.net /~ddavies/students/JavaCourse/W1/AnInstance.java (1645 words)

	jGuru: Language Essentials, Short Course Contents
		So far, you've learned to define instances of objects in terms of their behaviors, which in many cases is legitimate, but, in general, user-defined data types incorporate state variables as well.
		Most programmers would agree that instance variables should be initialized for the sake of readability, and local variables must be initialized for the sake of programmers' sanity everywhere, that is, for wherever and with whatever environment the source code might be compiled today, tomorrow, and after no one remembers who wrote the code.
		instance, passed as an argument by the browser environment, to draw a string at coordinates (10, 20) relative to the applet's window area.
	java.sun.com /developer/onlineTraining/JavaIntro/contents.html (8179 words)

	Java Class Information (Site not responding. Last check: 2007-09-17)
		The first step is looking at the object instance, then the method is always determined and performed based (1) on this object instance (2) on how many arguments were passed (3) on the type of arguments.
		As a practice, instance variables should be always private to ensure data hiding.
		Class variables have the same value for all instances of a class.
	www.ecst.csuchico.edu /~amk/classes/csciOOP/JavaClasses.html (1983 words)

	PHP: Variable scope - Manual
		If you specify a variable as global, it does not mean you are accessing a variable in the calling function's namespace, it means you are accessing the variable in the global namespace.
		The variable is static with respect to the function and not the class.
		If you want to access a variable such as a cookie inside a function, but theres a chance it may not even be defined, you need to access it using he GLOBALS array, not by defining it as global.
	www.php.net /variables.scope (4959 words)

	Wiseheart Design - Class-Level Instance Variables (Site not responding. Last check: 2007-09-17)
		Since class variables look much like instance variables (in that they are preceded with two @ signs) you might be tempted to think that they are just instance variables for classes, but don’t be fooled!
		That is, instead of getting a new version of the class variable every time you inherit from the superclass, you get the same version of the variable (not a copy).
		The trick with class-level instance variables is that they are defined after the class is created.
	wiseheartdesign.com /2006/09/22/class-level-instance-variables (791 words)

	Javanotes 5.0, Section 5.1 -- Objects, Instance Methods, and Instance Variables
		It is important to remember that the class of an object determines the types of the instance variables; however, the actual data is contained inside the individual objects, not the class.
		By the way, static member variables and static member subroutines in a class are sometimes called class variables and class methods, since they belong to the class itself, rather than to instances of that class.
		If the value of a variable is null, then it is, of course, illegal to refer to instance variables or instance methods through that variable -- since there is no object, and hence no instance variables to refer to.
	math.hws.edu /javanotes5/c5/s1.html (3987 words)

	Java instance variable concept from the Object Oriented Software Engineering knowledge base (Site not responding. Last check: 2007-09-17)
		can be accessed by other variables and methods in any class in the same package by default
		can have an interface as its type which means that, with the variable, you can invoke any operation supported by the interface
		is declared by giving the data type followed by the name of the variable
	www.site.uottawa.ca:4321 /oose/Javainstancevariable.html (145 words)

	Field (computer science) - Wikipedia, the free encyclopedia
		In object-oriented programming, field (also called data member) is the data encapsulated within a class or object.
		With regular fields (also called instance variables), each instance of the object retains a unique value for each instance variable in the class.
		With static fields (also called class variables), the class has one variable, which is shared by all instances.
	en.wikipedia.org /wiki/Instance_variable (186 words)

	instance variable concept from the Object Oriented Software Engineering knowledge base (Site not responding. Last check: 2007-09-17)
		instance variable concept from the Object Oriented Software Engineering knowledge base
		Next variable: Java variable Up: variable Previous variable: global variable
		has definition A data item present in all the instances of a class, normally used to implement associations and attributes
	www.site.uottawa.ca:4321 /oose/instancevariable.html (117 words)

	Problem when subclass instance changes base class instance variable - Python
		Problem when subclass instance changes base class instance variable - Python
		It looks like the instance variable is acting like a class variable with all
		to that variable through self.data affect Lbase and vice versa.
	www.thescripts.com /forum/thread43902.html (365 words)

	OO - Accessing method in returned class without instance variable - PHP
		OO - Accessing method in returned class without instance variable - PHP
		The reason I don't want to use another variable is that I want to be able to
		You have to use 2 statements instead of 1, like you guessed.
	www.thescripts.com /forum/thread3317.html (709 words)

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