Java Multiple Case

Last year in the investigation of a lot of java applications, see some of the phenomenon is the programmer to run on their own environment to read the program rarely lead to troubleshooting problems will be more frustrating, so think of writing this series of articles, procedures To provide functionality to end-users, the code is only one part of it, and it needs to be relied on for jvm, os, server hardware, networking, load balancing, etc. In this series of articles, Several parts, more is only a science role, because os I use are linux, this series ...

This article will describe how http://www.aliyun.com/zixun/aggregation/7155.html > Developers can leverage this framework to deploy them on ibm®websphere®application Server J2ee™ applications are integrated with these C + + libraries. Ibm®websphere®application Server is a ...

This article takes a practical project as an example, describes how to use Java multithreaded programming to simulate the random or regular behavior of multiple users. Using Java multithreaded programming, can better test products, earlier exposure to potential problems. With the increasing complexity and scale of http://www.aliyun.com/zixun/aggregation/32730.html > Information System, the application of transaction middleware in complex systems is more and more extensive. Transaction middleware as a medium ...

As we all know, Java in the processing of data is relatively large, loading into memory will inevitably lead to memory overflow, while in some http://www.aliyun.com/zixun/aggregation/14345.html "> 　　Data processing we have to deal with massive data, in doing data processing, our common means is decomposition, compression, parallel, temporary files and other methods; For example, we want to export data from a database, no matter what the database, to a file, usually Excel or ...

Knowing how the MapReduce program works, the next step is to implement it through code. We need three things: a map function, a reduce function, and some code to run the job. The map function is represented by the Mapper interface implementation, which declares a map () method. 　　Example 2-3 shows our map function implementation. Example 2-3. Find the highest temperature of the mapper import java.io.IOException; &http ...

Idea full Name IntelliJ is an integrated environment for Java language development, and IntelliJ is recognized as one of the best Java development tools in the industry, especially in smart Code assistants, code automation prompts, refactoring, Java EE support, Ant, JUnit, CVS consolidation, code review , innovative GUI design functions can be said to be extraordinary. Idea is the product of JetBrains, a company headquartered in Prague, the capital of the Czech Republic, where developers are dominated by rigorous, well-known Eastern European programmers. ...

Multithreading is the problem that programmers often face in the interview, the level of mastery and understanding of multithreading concept is often used to measure a person's programming strength. Yes, ordinary multithreading is not easy, then when multithreading encounter "elephants" will produce what kind of sparks? 　　Here we share the Java thread Pool management and distributed Hadoop scheduling framework with 严澜, the Shanghai Creative Technology director. Usually the development of the thread is a thing, such as Tomcat in the servlet is the threads, no thread how we provide more ...

Big data has almost become the latest trend in all business areas, but what is the big data? It's a gimmick, a bubble, or it's as important as rumors. In fact, large data is a very simple term--as it says, a very large dataset. So what are the most? The real answer is "as big as you think"! So why do you have such a large dataset? Because today's data is ubiquitous and has huge rewards: RFID sensors that collect communications data, sensors to collect weather information, and g ...

Konakart is a affordable Java based shopping cart software http://www.aliyun.com/zixun/aggregation/34003.html "> Solution for online retailers. Let Konakart help could your ecommerce sale ...

Usually the development of the thread is a thing, such as Tomcat is a servlet in the threads, there is no thread how do we provide multi-user access? But many developers who have just started to touch threads have suffered a lot. 　　How to do a set of simple threading Development Mode framework for everyone from the single thread development into multithreaded development, this is really a relatively difficult project. What is the specific thread? First look at what the process is, the process is a system executed a program, this program can use memory, processor, file system and other related resources ...