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Catalog What is object serialization Why serialization and deserialization are required Knowledge of serialization and deserialization What if some fields in Java serialization do not want to be serialized? Java Serialization Interface   java.io.Serializable Class refactoring using serialization and serialVersionUID Java Externaliza ...

For business development, the complexity of business logic is inevitable. With the development of business, the requirements will only become more and more complex. In order to consider various situations, many if else will inevitably appear in the code. Once there are too many if else in the code, it will greatly affect its readability and ma ...

## choice question ### Topic 1 (single choice): **The following are computer hardware( D )** #### Options: ​ A. QQ ​ B.WeChat ​ C.FeiQ ​ D.CPU ### Topic 2 (single choice): **The following can be guaranteed java Programs run across platforms( A )** #### Options: ​ A. JVM(java virtual machine) ​ B. Windows system ​ C. Linux sys ...

1. Numbers that occur only once Title Description: Given a non-empty integer array, each element occurs twice, except for one element that occurs only once. Find the element that only appears once. Example 1 Input: [2,2,1] Output: 1 Example 2: Input: [4,1,2,1,2] Output: 4 1. Ideas 1. The easiest way to think about it is to determine ...

This article is compiled and published by jiumo (Ma Zhi), chief lecturer of HeapDump performance communityPart 29 - calling the main() method of the Java main classMany articles have been written to introduce the assembly code execution logic corresponding to bytecode instructions, and some assembly code logic corresponding to bytecode instruct ...

Today, let's take a look at how much faster the native executable built by Quarkus is than the Spring application,   Ecological maturity is not discussed here  . TLDR Let's draw a conclusion and make a comparison with the Spring Web application with only one Controller. Application start time: 0.012s vs 2.294s Image size: ...

This article mainly describes how mybatis is loaded and executed in springboot. Because there will be a lot of content involved, this time we will only explain the call relationship and key code points. In order to avoid the article being too long and sleepy to read, some details that do not affect the overall process will not be involved. Sou ...

Introduction: starting from an example of data duplication in nailing real person authentication scenario, this paper analyzes that the reason is idempotent failure caused by concurrency, and leads to the concept of idempotent. Aiming at the idempotent problem in concurrent scenario, a feasible methodology for realizing idempotent is proposed. ...

Preparation for multi table query: three tables are created. Previously used user table, newly created role table, account table, user_role table. The specific parameters in the table are as follows: user table (mainly the header, which is filled in by itself): role table: account table: user_role table: After these classes are created, r ...

1, Mental process In Java Concurrent Programming, the synchronized keyword is undoubtedly a frequently asked question. During the interview, many interviewers pay more attention to your understanding of the synchronized keyword and its underlying. If you can answer it, it will undoubtedly add points. The following is what I learned through mys ...