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class method comparison table

Subject	call by	lack	have	have advantage	be	return to	is a kind of	is a subtopic of	overuse	implement	override	hide	have purpose	perform	access by	provide	mark as	have high cohesion
Java class method	using the name of the class, followed by a dot, followed by the name of the method (the name of the class can be omitted when calling a class method in the current class)	side effects if it does not modify any data, and does not leave behind any information, other than its result, that would have an effect on other computations	'this' value when it is executing	when using a certain procedure, a programmer does not need to worry about all the details of how it performs its computations; he or she only needs to know how to call it and what it computes	public except for those that will definitely need to be called from outside the package	its caller from only one place which should be the last statement	Java method	The Basics of Java			a method in a superclass with the same name	the details of procedures	implementing functions such as initializing a class, or operating on the complete set of instances of a class	a special-purpose function such as the user interface for a particular system	other methods and variables in any class in the same package by default	procedural abstraction	static	if related aspects of a system are kept together in this module, and unrelated aspects are kept out

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