Java GenericVisitorAdapter
Java is a popular programming language used in a variety of applications. One of its powerful features is the use of visitor design patterns. Visitors enable the separation of concerns between different parts of the code and provide a clean and modular approach to data manipulation. GenericVisitorAdapter is a key Java class that offers developers a reliable and efficient way of implementing visitors.
A concrete visitor is a type of visitor that performs a specific operation on a collection of elements of a certain type. The GenericVisitorAdapter provides a template for writing concrete visitors by defining all the possible operations in an abstract method called "visit". The concrete implementation of this method depends on the specific requirements of the visitor.
For instance, consider a program that manipulates a collection of shapes such as circles, rectangles, and triangles. We can define a ShapeVisitor interface with methods for visiting each type of shape. We can then implement the GenericVisitorAdapter class to create concrete visitors. The concrete visitor can be created by extending the GenericVisitorAdapter and implementing the visit methods for each shape.
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