In last week's article, we looked at various ways to concatenate strings. In the Append method of StringBuilder and StrngBuffer's abstract parent class AbstractStringBuilder, we...
In this article, we will continue to study conversion instructions in the bytecode instruction set. How do they operate on data conversion? A type conversion...
It is obvious that caching plays an important role in large concurrent systems. Caching is a memory operation at the microsecond or millisecond level. There's...
For developers, operations, and technology managers, microservices and containerization, distributed, and Internet architecture are all part of today's architecture. But for most IT professionals, microservices,...
These multithreaded questions, some from the site, some from their own thinking. There may be some problem online, there may be some questions the corresponding...
Distributed lock is to achieve mutual exclusion between multiple processes, common solutions include: unique index based on DB, temporary ordered node of Zookeeper, Redis SETNX...
Android 6.0Google I/O 2015 conference has been held on May 28, 2015 as promised. At the event, Android 6.0, code-named "Marshmallow," was launched. New features:...
Before you start, distinguish between processes and threads. A program needs at least one process, and a process needs at least one thread. A relationship...
This is the first time we've released a new version of Poster 1.4.3. We've added Golang language support, improved the generator code, and improved the...
The blogger graduated from the 17th session of Shuangfeiyi, mainly engaged in Java development, and has no experience in big factory. 2021 himself will soon...
Application Programming Interface (API) : Application Programming Interface. Java apis: Java classes that provide functionality in the JDK that encapsulate the underlying implementation. When we...
Main functions of message middleware decoupling: Reduced system coupling, no strong dependency asynchronous: Remote calls that do not need to be executed synchronously can effectively...
Java. Lang. NullPointerException is the most easy to occur in the Java exception, is also very puzzled programming beginners. This paper explains the cause of...
Data types are divided into basic data types and reference data types. The basic data types are numeric: integers (byte,short,int,long), floating-point numbers (float,double), and characters...
Brian Goetz, author of Java Concurrency In Practice, defines thread safety as: When multiple threads access to an object, if it's not the old donkey...