Java is currently one of the most widely used software development platforms. With the continuous growth of Java and the Java community, Java is no longer a simple computer language. It is a platform, a culture, and a community. .
As a platform, the JVM virtual machine plays an important role. In addition to the Java language, any computer language that can be compiled into bytecode belongs to the Java platform. Groovy, Scala, JRuby, etc. are all part of the Java platform, they rely on the JVM virtual machine, and the Java platform has become more colorful because of them.
As a culture, Java has almost become synonymous with "open source". In Java programs, there are countless open source software and frameworks, such as Tomcat, Struts, Hibernate, Spring, etc. Even JDK and JVM itself have many open source implementations, such as OpenJDK and Harmony. It can be said that the spirit of "sharing" is fully reflected in the Java world.
An excellent programmer must not only be able to write programs, but also be able to write high-quality programs to experience the great wisdom in Java development and make your Java programs more beautiful.
How to make your Java program faster and more stable?
table of Contents
Java performance tuning:
The basic concept of performance, two important laws (the barrel principle and Amdahl's law), and the general process and precautions of system tuning
Design Optimization
From the design level, introduce performance-related design patterns, components, and software design ideas that help improve performance.
Java program optimization
Introduce how to write high-performance Java code from the code level. The main content involved is string optimization, processing, file I/O optimization, the use of core database structures, Java reference types, and some common conventions.
Parallel program development and optimization
Parallel program development related content, and how to improve system performance through multithreading, successively introduced the concurrent design pattern, thread pool, the use of concurrent data structure, concurrency control method, "lock" optimization, the use of lock-free and Ctrip
JVM tuning
Based on the JVM virtual machine level. Introduce how to improve the performance of Java programs by setting reasonable JVM parameters
Java performance tuning tool
Tools article, introduces various tools for obtaining and monitoring program or system performance indicators, as well as troubleshooting tools related to Java applications
As a community, Java has countless developers, countless forums, information, from desktop applications, embedded development to enterprise-level applications, back-end servers, and middleware. You can see Java. The complexity of its application and the large number of participants are also staggering. It can be said that the Java community has become a good and huge ecosystem.
In addition, purely as a software development language, Java is very easy to learn, and its learning curve is slower than that of old computer languages such as C , because it tries to simplify or remove many obscure, redundant and difficult to understand parts of C++. , Such as pointers, virtual functions, multiple inheritance, etc.
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