What is the predominant method?

The prevailing of the

method is used in object -oriented programming in the inheritance hierarchy and occurs when the method defined in the superior class is redefined in sub -class. The subclass method usually does something other than the SuperClass method, or expands with the ability of SuperClass, but it may not be the case. The method of the method always occurs when the SuperClasy method is redefined in the subclass, regardless of the content of the redefined method. The redefined signatures of the method must be exactly the same. In addition, classes B and C of class A class may be a class B can contain a "Dosomething" method that does not take any input parameters, and Class C can contain the "Doshimther" method that takes the number as an input parameter. In this example, only Class B would show the predominant method because its "Dosomething" method has the same Thod as its SuperClass, class A. Method "Dosomething" in Class C, on the other hand, shows overload of the method because it creates a brand new method.

virtual inheritance in C ++ is another example of a predominant method. Virtual methods in superclassy may or may not be implemented, but any definition of subclass is the instance of the predominant method. When the method is rewritten in the subclass, the SuperClasy method is not called unless it is explicitly induced. This specific way of calling the overwritten method is often said to "hide" the implementation of a super class.

Although the predominant method is very flexible, not all methods can be rewritten and there are times when this stiffness could be more convenient. In Java I C ++, specific keywords can be used in the methods of methods to prevent overwriting the method in the subclass. To do this, Javap uses the keyword "final" and C ++ uses the keyword "Const". Prevention of the method of method may be beneficial if a particular function should always change throughout the inheritance tree.

generally should not be rewrittenSimple methods that get small pieces of data. Cases that tend to benefit from rewriting are the goal of adding functionality to the SuperClass method without creating a brand new method. Unusual cases could also benefit from this technique where the method needs to be completely reworked for one particular type of object. Whenever the method is rewritten, it is important that the programmer adequately comment on the methods of SuperClass and subclass. Ideally, these comments should clarify what each method does and how and why they differ.