Design mode - eight different implementations of single case mode [JAVA] and single case question sorting - interview necessary - super detailed

Design mode - single case mode - eight different implementations [JAVA] and single case problem sorting - necessary for interview - super detailed Introduction to singleton mode the singleton pattern is a software design pattern that restricts the instantiation of a class to one "single" instance. It can be simply understood as: a class ca ...

Posted by SalokinX on Mon, 16 May 2022 21:13:29 +0300

Ladder: Design Patterns

Data study organized from: Station B is still Silicon Valley I wrote a set of code to understand by myself, which has been uploaded Code cloud Since the design pattern is a big topic with a lot of content, my plan is to learn some commonly used ones first, and then gradually make them comprehensive. Design Patterns Design Pattern ...

Posted by wenxi on Mon, 16 May 2022 17:10:42 +0300

Design patterns 23 design patterns

Design mode (II) 23 design modes Rookie tutorial design mode Design mode interview questions Express Edition All references in this article are from the design pattern GoF Component collaboration mode Strategy mode Have the concept of "timeline" motivation Support often changesChange the algorithm transparently to decoupl ...

Posted by zampu on Sun, 15 May 2022 21:36:33 +0300

Starting again in 2020, the fourth of JAVA design patterns is the abstract factory pattern

Abstract factory pattern (detailed version) The production of a kind of products is considered in the factory method mode, such as only raising animals in the livestock ranch, only producing televisions in the TV factory, and only cultivating students majoring in computer software in the school of computer software. The same kind is called the ...

Posted by @sh on Sun, 15 May 2022 08:08:21 +0300

Factory pattern - understand Spring's Bean factory (classic example of horse soldier)

Factory pattern - understand Spring's Bean factory Connect the scene of "Lao Zhang drives to the northeast" in object-oriented. Link name Encapsulate the vehicle in "Lao Zhang drives to the northeast", encapsulate the vehicle Car Only one car is given to the driver (single case, multiple cases) By the way, explain the single ...

Posted by fuzz01 on Sun, 15 May 2022 07:34:12 +0300

Singleton design pattern - Enumeration singleton - singleton optimization

preface Singleton mode is the simplest of Java design modes. You only need one class to implement singleton mode. However, you can't underestimate singleton mode. Although it is relatively simple in design, you will encounter many pits in implementation. Therefore, fasten your safety belt and get on the bus. Definition of singleton mode Sing ...

Posted by RestlessThoughts on Sat, 14 May 2022 16:23:00 +0300

Study Notes - Week 3

This week's Android learning summary activity life cycle test: Write the following code in MainActivity.java public class MainActivity extends AppCompatActivity { private static final String TAG = "life_cycle"; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); s ...

Posted by gamerzfuse on Sat, 14 May 2022 09:20:05 +0300

Design Pattern Factory Pattern

After learning object-oriented programming, learn to create objects using keywords"new" To create objects, but creating objects in this way is a bit redundant and too coupled when a complex and multiple objects need to be created, and it is not easy to be understood. Factory pattern is used to create objects First, the simple factory mode. T ...

Posted by mr_badger on Fri, 13 May 2022 19:56:49 +0300

Design Patterns -- Adapter Patterns

adapter mode Purpose: Convert the interface of a class to another interface that the client wants. The adapter pattern enables classes to work together that would otherwise not work together due to incompatible interfaces. Hypothetical scenario: In the past, the mobile phone had a memory card, the mobile phone user put the data in the memor ...

Posted by phpnew on Fri, 13 May 2022 14:20:27 +0300

Design pattern behavioral pattern

Behavioral model The behavior model is responsible for efficient communication and responsibility assignment between objects. Behavioral model: Policy pattern: encapsulates a set of algorithms into a series of objects. By passing these objects, you can flexibly change the function of the program. For example: Java util. Comparator#compare ...

Posted by gargoylemusic on Fri, 13 May 2022 12:42:04 +0300