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Javabase java reflection mechanism Application of reflection: dynamic proxy Dynamic agent overview Principle of agent design pattern: Wrap the object with a proxy object, and then replace the original object with the proxy object. Any call to the original object must be operated through the proxy object. The proxy object determines whethe ...

1, Responsibility chain model 1. What is the responsibility chain model In the Chain of Responsibility Pattern, each receiver usually contains a reference to another receiver. If an object cannot process the request, it passes the same request to the next recipient, and so on. Chain of responsibility model: multiple objects have the opportun ...

brief introduction In concurrent programming, we sometimes need to use thread safe queues. If we want to implement a thread safe queue, there are two ways to implement it, one is to use blocking algorithm, the other is to use non blocking algorithm. The queue using blocking algorithm can be implemented by one lock (the same lock for queue entr ...

ArrayList and LinkedList design structure Note: The green solid line is the inheritance relationship between interfacesThe green dotted line is the class implementation interface relationshipBlue implementations are inheritance relationships between classes 1. ArrayList design structure 2. LinkedList design structure 3. Analyze the str ...

Learn about Spring Official website: https://spring.io/projects/spring-framework#learn Official download address: https://repo.spring.io/ui/native/release/org/springframework/spring GitHub: https://github.com/spring-projects/spring-framework <!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc --> <dependency&g ...

Git address: https://gitee.com/jyq_18792721831/sparkmaven.git Create Project Let's start by creating a generic maven project Create a project followed by a hello module Is also a normal maven module Increase scala dependency We don't write code in the parent project, the parent project is just for managing the child project, so th ...

introduction: Sorting algorithm is one of the most basic algorithms in data structure and algorithm. Here are ten classic sorting algorithms to explain. Taoist friends who don't know can come here to sweep away their blindness. From "rookie tutorial". explain    sorting algorithms can be divided into internal sorting ...

1. What are java annotations Annotation, as the name suggests, is to add notes to something, which will store some information, which may be very useful for a certain period of time in the future. Java annotation is also called Java annotation. Java provides a set of mechanism, which enables us to add annotations (i.e. attach some informat ...

brief introduction Channel is not only the channel of data transmission and data processing in netty, but also an indispensable part of netty program. In netty, channel is an interface, which has different implementations for different data types or protocols. Although channel is very important, it is really mysterious in the code. Basica ...

When you learn to write programs, the first line of code is hello world. But when you start learning WEB background technology, many people's first function is to write login (whisper: I don't know others, but I am anyway). However, when I interviewed or communicated with many students with a short working experience, I found that many student ...