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1, Reflection 1 Definition The reflection mechanism of Java is to know all the properties and methods of any class in the running state; For any object, we can call any of its methods and properties. Since we can get it, we can modify some type information; This function of dynamically obtaining information and dynamically calling object ...

This article was last updated on February 19, 2022, and has not been updated for more than 8 days. If the article content or picture resources fail, please leave a message and feedback. I will deal with it in time. Thank you! Array name as function parameterWhen using the array name as the function parameter, because the array name of the actu ...

1. Which of the following cannot be used to handle thread safety synchronized keywordvolatile keywordLock classtransient keyword Correct answer D answer analysis Let's take a look at the function of the transient keyword The variable cannot be serialized Variables modified by transient cannot be serialized Cannot be read after deserialization ...

What is the factory model? As the name suggests, factory is to create products. According to whether the products are specific products or specific factories, it can be divided into simple factory mode and factory method mode. According to the degree of abstraction of factories, it can be divided into factory method mode and abstract factory m ...

Threads and processes 1, What is a process / thread 1. Introduction As we all know, CPU is the core of computer, which undertakes all computing tasks. The operating system is the manager of the computer and a big housekeeper. It is responsible for task scheduling, resource allocation and management, and commands the whole computer hardwa ...

1.Mustache (double brace): 2.v-once: this instruction does not need to be followed by any expression (v-for followed by expression). This instruction indicates that elements and components are rendered only once and will not change with the change of data. After parsing the tag, the html-v.html-3 will output the data. 4.v-text: < H2 v-t ...

This article was last updated on February 22, 2022, and has not been updated for more than 6 days. If the article content or picture resources fail, please leave a message and feedback. I will deal with it in time. Thank you! Structure typeThe user establishes a combined data structure composed of different types of data, which is called struc ...

This article was last updated on February 20, 2022, and has not been updated for more than 7 days. If the article content or picture resources fail, please leave a message and feedback. I will deal with it in time. Thank you! Reference method of stringStrings are stored in character arrays.To reference a string, you can use the following two m ...

Detailed explanation of JVM virtual machine (class II) loading subsystem 1. Overview of memory structure 💡 Note: only the HotSpot virtual machine is available in the method area, but neither J9 nor JRockit 2. Class loader subsystem Functions of class loader subsystem: The class loader subsystem is responsible for loading class ...

Why is there a function? At first glance, this problem is a bit SB. The function must be written for use, but can't I implement my steps step by step to realize the function? Yes, but on the one hand, it will cause code redundancy and heavy workload. On the other hand, it is unsightly and concise. In my opinion, function is to extract the ...