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Builder mode (builder mode) Requirements: 1) Need to build a house: this process is piling, building walls and capping 2) There are all kinds of houses, such as ordinary houses, high-rise buildings, villas. Although the process of all kinds of houses is the same, the requirements are not the same 3) Please write a program to complete the requi ...

Prototype pattern of Java design pattern It's been several days. Today, I'll write about the prototype pattern in the design pattern. I've seen the sample code a few days ago. I want to do some optimization to make it easier for everyone to understand this pattern more deeply. In addition, I also need to find more detailed information 1: Wha ...

I usually read blogs or learn knowledge. What I learned is scattered. There is no independent concept of knowledge module, and it is easy to forget after learning. So I set up my own Note warehouse (a note warehouse I maintain for a long time. If I'm interested, I can click a star ~ your star is a great driving force for my writing). Class ...

proxy pattern Let's review the questions left by the strategic model in the previous chapter: Assuming that the company's performance grade is divided into A, B, C, D and E, the corresponding grade points of the year-end bonus are 2, 1.8, 1.5, 1.1 and 0.8. Assuming that the year-end base is base, the year-end bonus is: year-end base * grade ...

Design mode summary significance The essence of design pattern is the practical application of object-oriented design principles. It is a full understanding of the encapsulation, inheritance and polymorphism of classes, as well as the association and composition of classes Basic elements name Question: the application environment of th ...

The core of AOP is dynamic agent mode. To master AOP, we must master the agent mode. There are two agent modes: static agent and dynamic agent. Before learning dynamic agents, master static agents. 1, Static proxy There are four roles: 1. Abstract role Interfaces or abstract classes are generally used to solve this problem. For examp ...

This paper introduces the principle and some effect demonstration of my custom tree node diagram control. Welcome to the exchange Tree View; Mind map; Think map; tree map; Dendrogram; Mind mapping; brief introduction github connection: https://github.com/guaishouN/android-tree-view.git No good Android Dendrogram Open Source Controls we ...

1. Situation and intention   we store a lot of food in the freezer. For mothers, opening the freezer is mainly to cook with vegetables and meat, and for children, it is mainly to take ice cream and drinks.   in daily development, there must be some classes related to data structures, such as the model for designing data stora ...

Continued from template mode 1 of Glide design mode The list of known implementation classes of LifecycleListener is as follows: AppWidgetTargetBaseTargetBitmapImageViewTargetBitmapThumbnailImageViewTargetCustomTargetCustomViewTargetDrawableImageViewTargetDrawableThumbnailImageViewTargetImageViewTargetNotificationTargetPreloadTargetRequestFut ...

[import] The job functions of the head office and branches are similar, but the subsidiaries are included in the head office, as shown in the following figure: The objects are combined into a tree structure to represent the "part whole" hierarchy. This pattern structure is called composite pattern. 1, Combination mode Composi ...