Java New T

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Java Development 2.0: Implementing REST through CouchDB and Groovy restclient

In the past few years, the innovative development of the open source world has elevated the productivity of Java™ developers to one level. Free tools, frameworks and solutions make up for once-scarce vacancies. The Apache CouchDB, which some people think is a WEB 2.0 database, is very promising. It's not difficult to master CouchDB, it's as simple as using a Web browser. This issue of Java open ...

From the development of java cloud computing

Lead: Some time ago, Gaurav Pal, director of strategic planning at Smartronix, published an article on GigaOM that says that because the cloud computing process is very similar to that of Java, we may be able to harness the advances in Java and WORA Analysis, to a general analysis of the evolution of the various models of cloud computing in the coming years. The following is the full text of the article: US SUN (Stanford University N ...

Detailed description of Iterable and Iterator in java

Iterator and iterable objects in Java. Let's take a look at the difference between these two objects and how to implement the for each loop in a custom class.

Java MapReduce

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 ...

Azureus A Java-based BitTorrent client

Azureus is a java-based http://www.aliyun.com/zixun/aggregation/33802.html ">bittorrent client that supports I2P and Tor anonymous communication protocols. It supports Windows,mac OS X,linux and UNIX operating systems. Azureus was first released in SourceForge.net in June 2003, most of them using STA on eclipses ...

Java iterators -- Iterator and Iterable interfaces

Java iterator is mainly used to manipulate collection objects in java. Java provides an iterator interface Iterator. Iterator can only move forward and cannot be rolled back.

Deep understanding of Java iterators

Java Iterable interface and the Iterator interface. The class that implements the Iterable interface is iterable; the class that implements the Iterator interface is an iterator.

HDFs Java Access interface

I. Build HADOOP development environment The various code that we have written in our work is run in the server, and the HDFS operation code is no exception. During the development phase, we used eclipse under Windows as the development environment to access the HDFs running in the virtual machine. That is, accessing HDFs in remote Linux through Java code in local eclipse. To access the HDFS in the client computer using Java code from the host, you need to ensure the following: (1) Ensure host and client ...

XWiki 3.1 publishes Java open source wiki engine

XWiki is a powerful Java open source Wiki engine. It supports some popular features such as: * http://www.aliyun.com/zixun/aggregation/8254.html "> Content Management (Browse/edit/preview/Save), * Support attachments, * version control, * Full Text Search, * Powerful Rights Management * use hibernate for data storage, * RSS feed ...

How to submit yarn MapReduce computing tasks through Java programs

Due to the requirements of the project, it is necessary to submit yarn MapReduce computing tasks through Java programs.   Unlike the general task of submitting MapReduce through jar packages, a small change is required to submit mapreduce tasks through the program, as detailed in the following code.   The following is MapReduce main program, there are a few points to mention: 1, in the program, I read the file into the format set to Wholefileinputformat, that is, not to the file segmentation. 2, in order to control the treatment of reduce ...

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