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2021SC@SDUSC This article is sent synchronously in the personal blog, and the address is Redbit's personal journey outline Last Fast JSON source code analysis -- deserialization (6) The two parsearray APIs of fastjson are deeply compared, and the API design and internal logic architecture are analyzed through similarities and differ ...

Online problem handling - feign call error Business scenario: Service 1 invokes service 2 through Feign. In the test phase, everything is normal and there is data loss online (to avoid simple reproduction of sensitive local). Errors are reported as follows: 2021-12-04 13:47:47.774 DEBUG 29480 --- [io-10011-exec-1] .w.s.m.m.a.ServletInvocableH ...

2. First MVC program Hello，SpringMVC 2.1 configuration version 1. Create a new Moudle, springmvc-02-hello, and add web support! 2. Confirm that the dependency of spring MVC is imported! 3. Configure web.xml and register dispatcher Servlet <?xml version="1.0" encoding="UTF-8"?> <web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee" ...

167. Sum of two II - input ordered array Topic overview Give an array of integers that have been arranged in non decreasing order numbers ，Please find two numbers from the array. The sum of the two numbers is equal to the target number target . The function should return the subscript values of these two numbers as an array of integers ...

The content may be sloppy, but they are all basic and important things that I think, and they also involve two multi-threaded interview questions Multithreading Process process Thread thread The program is static Process is an execution process of a program. It is a dynamic concept. A process will have multiple threads that do not affect ea ...

Summary and thinking of Java concurrent programming detailed series of best examples of Java Concurrent Programming     writing high-quality concurrent code is a very difficult task. The Java language has built-in pairs since the first version Multithreading Our support was great in those years, but when we Concurrent programming With a ...

Hello, I'm Monday. Today we talk about heap and heap sorting.1, PileWhen it comes to heaps, we should first start with binary trees, from binary trees to complete binary trees, and then to heaps.1. Binary treeEach node can only have two subtrees at most, and can be divided into left and right2. Complete binary treeFor a binary tree with n node ...

Preface *** The Runnable interface we used often before cannot return results or throw out exception classes that can be checked. To make up for this, there's the Callable interface, which we're going to cover in this blog. Callable interface @FunctionalInterface public interface Callable<V> { /** * Computes a result, or ...

Features of List Series Collection: ArrayList, LinekdList: ordered, repeatable, indexed.Ordered: the stored and retrieved elements are in the same order Indexed: elements can be manipulated by indexingRepeatable: stored elements can be repeated Unique method of List Collection: because the List Collection supports index, it has many unique API ...

Note: the data comes from Blue bridge cloud course( https://www.lanqiao.cn/ ) , interested partners can go to the official website to learn. Here is the information compiled by Xiaobian after his study. If there is any error, please leave a message for discussion. Thank you! summary Exception refers to all kinds of unexpected conditions that ...