PUBLIC MARKS with tags documentation & java

Overview Sun Microsystems have developed Java, which is many things depending on who you ask. It is a language, and an execution environment and probably many more things. On this page Java refers to the software that executes programs compiled to Java byte codes (akin to machine language). Be aware of the Java trap. Although keep in mind that with the GPL licensing of the Sun Java implementation the Java trap is a thing of the past. Even RMS thinks so. Use IcedTea on Ubuntu 7.10 and OpenJDK on Ubuntu 8.04 or later. The first free project to offer substantial parts of Java platform functionality was Guavac. After that the free software movement developed java compilers, most notably the GNU Compiler for Java. GCJ is a front end to the GCC compiler which can natively compile both Java(tm) source and bytecode files. The compiler can also generate class files. Gcjwebplugin is a little web browser plugin to execute Java applets. It is targeted for Mozilla and compatible browsers that support the NPAPI. Others include the Eclipse Java Compiler, which is maintained by the Eclipse Foundation. Eclipse is an open-source Integrated development environment (IDE) written primarily in Java. The Eclipse open source community has over 60 open source projects. OpenJDK is the open source Java, derived from sources which will become OpenJDK 7 in the future.

Running Java under Ubuntu In order to run Java programs and Java applets, you must have a Java environment installed. The GCJ flavor of Java is installed as default, and is usually fine for most purposes. If it is not installed, JavaInstallation describes how to install some opensource flavors of Java. You may, however, have a need to run the Sun flavor of Java if something does not work correctly. To get Sun Java under Ubuntu 7.04 or later running on Intel or PowerPC platform, you should enable the Universe repository in Add/Remove programs, and install either the openjdk-6-jre package or the sun-java6-bin package. (Note: PowerPC version is slow). To get Sun Java under Ubuntu 6.06 or 6.10 running on Intel x86 platform, you should enable the Universe repository in Add/Remove programs, and install the sun-java5-bin package. Note: The same commands will work under Xubuntu/Kubuntu (using Add/Remove or the Adept Package Installer). Choosing the default Java to use Just installing new Java flavours does not change the default Java pointed to by /usr/bin/java. You must explicitly set this: * Open a Terminal window * Run sudo update-java-alternatives -l to see the current configuration and possibilities. * Run sudo update-java-alternatives -s XXXX to set the XXX java version as default. For Sun Java 6 this would be sudo update-java-alternatives -s java-6-sun * Run java -version to ensure that the correct version is being called. You can also use the following command to interactively make the change; * Open a Terminal window * Run sudo update-alternatives --config java * Follow the onscreen prompt

Silverbullet when doing networking IO. Features readLine, readInt, readFully(byte[])

Les RefCardz sont de petites fiches pratiques à mettre dans un coin de votre bureau ou dans votre tiroir. Ce sont des cheats sheets qui permettent de gagner du temps sur une technologie ou un outil bien précis. Ecrites par des experts du domaine et illustrées avec des codes sources et des astuces, ce sont des outils très appréciés des développeurs.

Documentation technique où est présentée toute la démarche pas à pas pour mettre en oeuvre un SSO avec weblogic et Active Directory

Even though the Hadoop framework is written in Java, programs for Hadoop need not to be coded in Java but can also be developed in other languages like Python or C (the latter since version 0.14.1). However, the documentation and the most prominent Python example on the Hadoop home page could make you think that you must translate your Python code using Jython into a Java jar file. Obviously, this is not very convenient and can even be problematic if you depend on Python features not provided by Jython. Another issue of the Jython approach is the overhead of writing your Python program in such a way that it can interact with Hadoop - just have a look at the example in ${HADOOP_INSTALL}/src/examples/python/WordCount.py and you see what I mean. I still recommend to have at least a look at the Jython approach and maybe even at the new C MapReduce API called Pipes, it's really interesting. Having that said, the ground is prepared for the purpose of this tutorial: writing a Hadoop MapReduce program in a more Pythonic way, i.e. in a way you should be familiar with.

Trouve une correspondance entre une expression rationnelle et une chaîne, et remplace la sous-chaîne trouvée par une nouvelle sous-chaîne.

This article looks at some of the methods, tools and tricks to dissect web 2.0 applications (including Ajax) and discover security holes using Firefox and its plugins. The key learning objectives of this article are to understand the:

Vous trouverez sur ce site une série de TD téléchargeables dont l'ambition est de vous aider à apprendre à programmer en JAVA. L'idée directrice est d'étudier des exemples de programmes JAVA en expliquant les notions qu'ils mettent en jeu, puis de proposer à chaque fois quelques exercices d'application. L'accent sera donc mis sur la pratique. Pas de longs développements théoriques, pas de liste exhaustive de toutes les instructions disponibles. Idées, instructions, méthodes apparaissent au fur et à mesure des besoins, dans un ordre qui est le mien et qui obéit à une certaine logique personnelle. Ce site n'a donc pas pour objectif de vous permettre de retrouver rapidement tel ou tel renseignement sur JAVA. D'autres le font déjà très bien. Pratique avant tout, mais pratique raisonnée. Utilisation du copier/coller, mais pas sans comprendre les enjeux des lignes de code que l'on est entrain de coller. Le but est de pouvoir en écrire quelques-unes seul, pour le plaisir d'avoir réussi à faire quelque chose.

The Sun Doc Check Doclet is an extension to the Javadoc tool It runs on source code and reviews documentation comments, generating an HTML report that identifies empty comments and other ommissions and irregularities in the documentation comments.

JAutodoc is an Eclipse Plugin for automatic adding Javadoc to your source code. It optionally generates initial comments from element name.

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